HHH-18661 Add unnest() set-returning function and enable XML/JSON based array support on more databases

docker_db.sh

@@ -434,6 +434,8 @@ use master
 go
 create login $SYBASE_USER with password $SYBASE_PASSWORD
 go
+exec sp_configure 'enable xml', 1
+go
 exec sp_dboption $SYBASE_DB, 'abort tran on log full', true
 go
 exec sp_dboption $SYBASE_DB, 'allow nulls by default', true

documentation/src/main/asciidoc/userguide/chapters/query/hql/QueryLanguage.adoc

@@ -8,6 +8,7 @@
 :array-example-dir-hql: {core-project-dir}/src/test/java/org/hibernate/orm/test/function/array
 :json-example-dir-hql: {core-project-dir}/src/test/java/org/hibernate/orm/test/function/json
 :xml-example-dir-hql: {core-project-dir}/src/test/java/org/hibernate/orm/test/function/xml
+:srf-example-dir-hql: {core-project-dir}/src/test/java/org/hibernate/orm/test/function/srf
 :extrasdir: extras
 
 This chapter describes Hibernate Query Language (HQL) and Jakarta Persistence Query Language (JPQL).
@@ -1197,32 +1198,33 @@ The following functions deal with SQL array types, which are not supported on ev
 |===
 | Function | Purpose
 
-| `array()` | Creates an array based on the passed arguments
+| <<hql-array-constructor-functions,`array()`>> | Creates an array based on the passed arguments
-| `array_list()` | Like `array`, but returns the result as `List<?>`
+| <<hql-array-constructor-functions,`array_list()`>> | Like `array`, but returns the result as `List<?>`
-| `array_agg()` | Aggregates row values into an array
+| <<hql-array-aggregate-functions,`array_agg()`>> | Aggregates row values into an array
-| `array_position()` | Determines the position of an element in an array
+| <<hql-array-position-functions,`array_position()`>> | Determines the position of an element in an array
-| `array_positions()` | Determines all positions of an element in an array
+| <<hql-array-positions-functions,`array_positions()`>> | Determines all positions of an element in an array
-| `array_positions_list()` | Like `array_positions`, but returns the result as `List<Integer>`
+| <<hql-array-positions-functions,`array_positions_list()`>> | Like `array_positions`, but returns the result as `List<Integer>`
-| `array_length()` | Determines the length of an array
+| <<hql-array-length-functions,`array_length()`>> | Determines the length of an array
-| `array_concat()` | Concatenates array with each other in order
+| <<hql-array-concat-functions,`array_concat()`>> | Concatenates array with each other in order
-| `array_prepend()` | Prepends element to array
+| <<hql-array-prepend-functions,`array_prepend()`>> | Prepends element to array
-| `array_append()` | Appends element to array
+| <<hql-array-append-functions,`array_append()`>> | Appends element to array
-| `array_contains()` | Whether an array contains an element
+| <<hql-array-contains-functions,`array_contains()`>> | Whether an array contains an element
-| `array_contains_nullable()` | Whether an array contains an element, supporting `null` element
+| <<hql-array-contains-functions,`array_contains_nullable()`>> | Whether an array contains an element, supporting `null` element
-| `array_includes()` | Whether an array contains another array
+| <<hql-array-includes-example,`array_includes()`>> | Whether an array contains another array
-| `array_includes_nullable()` | Whether an array contains another array, supporting `null` elements
+| <<hql-array-includes-example,`array_includes_nullable()`>> | Whether an array contains another array, supporting `null` elements
-| `array_intersects()` | Whether an array holds at least one element of another array
+| <<hql-array-intersects-functions,`array_intersects()`>> | Whether an array holds at least one element of another array
-| `array_intersects_nullable()` | Whether an array holds at least one element of another array, supporting `null` elements
+| <<hql-array-intersects-functions,`array_intersects_nullable()`>> | Whether an array holds at least one element of another array, supporting `null` elements
-| `array_get()` | Accesses the element of an array by index
+| <<hql-array-get-functions,`array_get()`>> | Accesses the element of an array by index
-| `array_set()` | Creates array copy with given element at given index
+| <<hql-array-set-functions,`array_set()`>> | Creates array copy with given element at given index
-| `array_remove()` | Creates array copy with given element removed
+| <<hql-array-remove-functions,`array_remove()`>> | Creates array copy with given element removed
-| `array_remove_index()` | Creates array copy with the element at the given index removed
+| <<hql-array-remove-index-functions,`array_remove_index()`>> | Creates array copy with the element at the given index removed
-| `array_slice()` | Creates a sub-array of the based on lower and upper index
+| <<hql-array-slice-functions,`array_slice()`>> | Creates a sub-array of the based on lower and upper index
-| `array_replace()` | Creates array copy replacing a given element with another
+| <<hql-array-replace-functions,`array_replace()`>> | Creates array copy replacing a given element with another
-| `array_trim()` | Creates array copy trimming the last _N_ elements
+| <<hql-array-trim-functions,`array_trim()`>> | Creates array copy trimming the last _N_ elements
-| `array_fill()` | Creates array filled with the same element _N_ times
+| <<hql-array-fill-functions,`array_fill()`>> | Creates array filled with the same element _N_ times
-| `array_fill_list()` | Like `array_fill`, but returns the result as `List<?>`
+| <<hql-array-fill-functions,`array_fill_list()`>> | Like `array_fill`, but returns the result as `List<?>`
-| `array_to_string()` | String representation of array
+| <<hql-array-to-string-functions,`array_to_string()`>> | String representation of array
+| <<hql-array-unnest,`unnest()`>> | Turns an array into rows
 |===
 
 [[hql-array-constructor-functions]]
@@ -1637,6 +1639,32 @@ include::{array-example-dir-hql}/ArrayToStringTest.java[tags=hql-array-to-string
 ----
 ====
 
+[[hql-array-unnest]]
+===== `unnest()`
+
+A <<hql-from-set-returning-functions,set-returning function>>, which turns the single array argument into rows.
+Returns no rows if the array argument is `null` or an empty array.
+The `index()` function can be used to access the 1-based array index of an array element.
+
+[[hql-array-unnest-struct-example]]
+====
+[source, java, indent=0]
+----
+include::{array-example-dir-hql}/ArrayUnnestStructTest.java[tags=hql-array-unnest-aggregate-with-ordinality-example]
+----
+====
+
+The `lateral` keyword is mandatory if the argument refers to a from node item of the same query level.
+Basic plural attributes can also be joined directly, which is syntax sugar for `lateral unnest(...)`.
+
+[[hql-array-unnest-example]]
+====
+[source, java, indent=0]
+----
+include::{array-example-dir-hql}/ArrayUnnestTest.java[tags=hql-array-unnest-example]
+----
+====
+
 [[hql-functions-json]]
 ==== Functions for dealing with JSON
 
@@ -2916,6 +2944,48 @@ The CTE name can be used for a `from` clause root or a `join`, similar to entity
 
 Refer to the <<hql-with-cte,with clause>> chapter for details about CTEs.
 
+[[hql-from-set-returning-functions]]
+==== Set-returning functions in `from` clause
+
+A set-returning function is a function that produces rows instead of a single scalar value
+and is exclusively used in the `from` clause, either as root node or join target.
+
+The `index()` function can be used to access the 1-based index of a returned row.
+
+The following set-returning functions are available on many platforms:
+
+|===
+| Function | purpose
+
+| <<hql-array-unnest,`unnest()`>> | Turns an array into rows
+//| `generate_series()` | Creates a series of values as rows
+|===
+
+To use set returning functions defined in the database, it is required to register them in a `FunctionContributor`:
+
+[[hql-from-set-returning-functions-contributor-example]]
+====
+[source, java, indent=0]
+----
+include::{srf-example-dir-hql}/CustomSetReturningFunctionTest.java[tags=hql-set-returning-function-contributor-example]
+----
+====
+
+After that, the function can be used in the `from` clause:
+
+[[hql-from-set-returning-functions-custom-example]]
+====
+[source, java, indent=0]
+----
+include::{srf-example-dir-hql}/CustomSetReturningFunctionTest.java[tags=hql-set-returning-function-custom-example]
+----
+====
+
+NOTE: The `index()` function represents the idea of the `with ordinality` SQL syntax,
+which is not supported on some databases for user defined functions.
+Hibernate ORM tries to emulate this feature by wrapping invocations as lateral subqueries and using `row_number()`,
+which may lead to worse performance.
+
 [[hql-join]]
 === Declaring joined entities
 
@@ -3131,6 +3201,17 @@ Most databases support some flavor of `join lateral`, and Hibernate emulates the
 But emulation is neither very efficient, nor does it support all possible query shapes, so it's important to test on your target database.
 ====
 
+[[hql-join-set-returning-function]]
+==== Set-returning functions in joins
+
+A `join` clause may contain a set-returning function, either:
+
+- an uncorrelated set-returning function, which is almost the same as a <<hql-from-set-returning-functions,set-returning function in the `from` clause>>, except that it may have an `on` restriction, or
+- a _lateral join_, which is a correlated set-returning function, and may refer to other roots declared earlier in the same `from` clause.
+
+The `lateral` keyword just distinguishes the two cases.
+A lateral join may be an inner or left outer join, but not a right join, nor a full join.
+
 [[hql-implicit-join]]
 ==== Implicit association joins (path expressions)
 

hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/CockroachLegacyDialect.java

@@ -18,6 +18,7 @@ import java.util.TimeZone;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
+import org.checkerframework.checker.nullness.qual.Nullable;
 import org.hibernate.LockMode;
 import org.hibernate.LockOptions;
 import org.hibernate.PessimisticLockException;
@@ -92,7 +93,6 @@ import static org.hibernate.type.SqlTypes.GEOMETRY;
 import static org.hibernate.type.SqlTypes.INET;
 import static org.hibernate.type.SqlTypes.INTEGER;
 import static org.hibernate.type.SqlTypes.JSON;
-import static org.hibernate.type.SqlTypes.JSON_ARRAY;
 import static org.hibernate.type.SqlTypes.LONG32NVARCHAR;
 import static org.hibernate.type.SqlTypes.LONG32VARBINARY;
 import static org.hibernate.type.SqlTypes.LONG32VARCHAR;
@@ -263,11 +263,9 @@ public class CockroachLegacyDialect extends Dialect {
 		if ( getVersion().isSameOrAfter( 20 ) ) {
 			ddlTypeRegistry.addDescriptor( new DdlTypeImpl( INET, "inet", this ) );
 			ddlTypeRegistry.addDescriptor( new DdlTypeImpl( JSON, "jsonb", this ) );
-			ddlTypeRegistry.addDescriptor( new DdlTypeImpl( JSON_ARRAY, "jsonb", this ) );
 		}
 		else {
 			ddlTypeRegistry.addDescriptor( new DdlTypeImpl( JSON, "json", this ) );
-			ddlTypeRegistry.addDescriptor( new DdlTypeImpl( JSON_ARRAY, "json", this ) );
 		}
 		ddlTypeRegistry.addDescriptor( new NamedNativeEnumDdlTypeImpl( this ) );
 		ddlTypeRegistry.addDescriptor( new NamedNativeOrdinalEnumDdlTypeImpl( this ) );
@@ -372,11 +370,11 @@ public class CockroachLegacyDialect extends Dialect {
 				if ( getVersion().isSameOrAfter( 20, 0 ) ) {
 					jdbcTypeRegistry.addDescriptorIfAbsent( PgJdbcHelper.getInetJdbcType( serviceRegistry ) );
 					jdbcTypeRegistry.addDescriptorIfAbsent( PgJdbcHelper.getJsonbJdbcType( serviceRegistry ) );
-					jdbcTypeRegistry.addDescriptorIfAbsent( PgJdbcHelper.getJsonbArrayJdbcType( serviceRegistry ) );
+					jdbcTypeRegistry.addTypeConstructorIfAbsent( PgJdbcHelper.getJsonbArrayJdbcType( serviceRegistry ) );
 				}
 				else {
 					jdbcTypeRegistry.addDescriptorIfAbsent( PgJdbcHelper.getJsonJdbcType( serviceRegistry ) );
-					jdbcTypeRegistry.addDescriptorIfAbsent( PgJdbcHelper.getJsonArrayJdbcType( serviceRegistry ) );
+					jdbcTypeRegistry.addTypeConstructorIfAbsent( PgJdbcHelper.getJsonArrayJdbcType( serviceRegistry ) );
 				}
 			}
 			else {
@@ -384,11 +382,11 @@ public class CockroachLegacyDialect extends Dialect {
 				if ( getVersion().isSameOrAfter( 20, 0 ) ) {
 					jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingInetJdbcType.INSTANCE );
 					jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingJsonJdbcType.JSONB_INSTANCE );
-					jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingJsonArrayJdbcType.JSONB_INSTANCE );
+					jdbcTypeRegistry.addTypeConstructorIfAbsent( PostgreSQLCastingJsonArrayJdbcTypeConstructor.JSONB_INSTANCE );
 				}
 				else {
 					jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingJsonJdbcType.JSON_INSTANCE );
-					jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingJsonArrayJdbcType.JSON_INSTANCE );
+					jdbcTypeRegistry.addTypeConstructorIfAbsent( PostgreSQLCastingJsonArrayJdbcTypeConstructor.JSON_INSTANCE );
 				}
 			}
 		}
@@ -398,11 +396,11 @@ public class CockroachLegacyDialect extends Dialect {
 			if ( getVersion().isSameOrAfter( 20, 0 ) ) {
 				jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingInetJdbcType.INSTANCE );
 				jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingJsonJdbcType.JSONB_INSTANCE );
-				jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingJsonArrayJdbcType.JSONB_INSTANCE );
+				jdbcTypeRegistry.addTypeConstructorIfAbsent( PostgreSQLCastingJsonArrayJdbcTypeConstructor.JSONB_INSTANCE );
 			}
 			else {
 				jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingJsonJdbcType.JSON_INSTANCE );
-				jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingJsonArrayJdbcType.JSON_INSTANCE );
+				jdbcTypeRegistry.addTypeConstructorIfAbsent( PostgreSQLCastingJsonArrayJdbcTypeConstructor.JSON_INSTANCE );
 			}
 		}
 
@@ -424,6 +422,7 @@ public class CockroachLegacyDialect extends Dialect {
 				)
 		);
 
+		// Replace the standard array constructor
 		jdbcTypeRegistry.addTypeConstructor( PostgreSQLArrayJdbcTypeConstructor.INSTANCE );
 	}
 
@@ -518,6 +517,8 @@ public class CockroachLegacyDialect extends Dialect {
 		functionFactory.jsonArrayAppend_postgresql( false );
 		functionFactory.jsonArrayInsert_postgresql();
 
+		functionFactory.unnest_postgresql();
+
 		// Postgres uses # instead of ^ for XOR
 		functionContributions.getFunctionRegistry().patternDescriptorBuilder( "bitxor", "(?1#?2)" )
 				.setExactArgumentCount( 2 )
@@ -534,6 +535,11 @@ public class CockroachLegacyDialect extends Dialect {
 		functionContributions.getFunctionRegistry().registerAlternateKey( "truncate", "trunc" );
 	}
 
+	@Override
+	public @Nullable String getDefaultOrdinalityColumnName() {
+		return "ordinality";
+	}
+
 	@Override
 	public TimeZoneSupport getTimeZoneSupport() {
 		return TimeZoneSupport.NORMALIZE;

hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/DB2LegacyDialect.java

@@ -88,6 +88,7 @@ import org.hibernate.tool.schema.extract.internal.SequenceInformationExtractorDB
 import org.hibernate.tool.schema.extract.internal.SequenceInformationExtractorNoOpImpl;
 import org.hibernate.tool.schema.extract.spi.SequenceInformationExtractor;
 import org.hibernate.type.JavaObjectType;
+import org.hibernate.type.SqlTypes;
 import org.hibernate.type.StandardBasicTypes;
 import org.hibernate.type.descriptor.ValueExtractor;
 import org.hibernate.type.descriptor.java.JavaType;
@@ -455,6 +456,14 @@ public class DB2LegacyDialect extends Dialect {
 			functionFactory.xmlexists_db2_legacy();
 		}
 		functionFactory.xmlagg();
+
+		functionFactory.unnest_emulated();
+	}
+
+	@Override
+	public int getPreferredSqlTypeCodeForArray() {
+		// Even if DB2 11 supports JSON functions, it's not possible to unnest a JSON array to rows, so stick to XML
+		return SqlTypes.XML_ARRAY;
 	}
 
 	@Override

hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/DB2LegacySqlAstTranslator.java

@@ -10,8 +10,11 @@ import java.util.function.Consumer;
 import org.hibernate.LockMode;
 import org.hibernate.dialect.DatabaseVersion;
 import org.hibernate.engine.spi.SessionFactoryImplementor;
+import org.hibernate.metamodel.mapping.CollectionPart;
 import org.hibernate.metamodel.mapping.JdbcMappingContainer;
+import org.hibernate.metamodel.mapping.ModelPart;
 import org.hibernate.query.IllegalQueryOperationException;
+import org.hibernate.query.derived.AnonymousTupleTableGroupProducer;
 import org.hibernate.query.sqm.ComparisonOperator;
 import org.hibernate.query.sqm.FetchClauseType;
 import org.hibernate.sql.ast.Clause;
@@ -19,6 +22,7 @@ import org.hibernate.sql.ast.SqlAstNodeRenderingMode;
 import org.hibernate.sql.ast.spi.AbstractSqlAstTranslator;
 import org.hibernate.sql.ast.spi.SqlSelection;
 import org.hibernate.sql.ast.tree.MutationStatement;
+import org.hibernate.sql.ast.tree.SqlAstNode;
 import org.hibernate.sql.ast.tree.Statement;
 import org.hibernate.sql.ast.tree.delete.DeleteStatement;
 import org.hibernate.sql.ast.tree.expression.CaseSearchedExpression;
@@ -28,6 +32,8 @@ import org.hibernate.sql.ast.tree.expression.Expression;
 import org.hibernate.sql.ast.tree.expression.Literal;
 import org.hibernate.sql.ast.tree.expression.SqlTuple;
 import org.hibernate.sql.ast.tree.expression.Summarization;
+import org.hibernate.sql.ast.tree.from.DerivedTableReference;
+import org.hibernate.sql.ast.tree.from.FunctionTableReference;
 import org.hibernate.sql.ast.tree.from.NamedTableReference;
 import org.hibernate.sql.ast.tree.from.QueryPartTableReference;
 import org.hibernate.sql.ast.tree.from.TableGroup;
@@ -253,6 +259,34 @@ public class DB2LegacySqlAstTranslator<T extends JdbcOperation> extends Abstract
 		inLateral = oldLateral;
 	}
 
+	@Override
+	protected void renderDerivedTableReference(DerivedTableReference tableReference) {
+		if ( tableReference instanceof FunctionTableReference && tableReference.isLateral() ) {
+			// No need for a lateral keyword for functions
+			tableReference.accept( this );
+		}
+		else {
+			super.renderDerivedTableReference( tableReference );
+		}
+	}
+
+	@Override
+	public void renderNamedSetReturningFunction(String functionName, List<? extends SqlAstNode> sqlAstArguments, AnonymousTupleTableGroupProducer tupleType, String tableIdentifierVariable, SqlAstNodeRenderingMode argumentRenderingMode) {
+		final ModelPart ordinalitySubPart = tupleType.findSubPart( CollectionPart.Nature.INDEX.getName(), null );
+		if ( ordinalitySubPart != null ) {
+			appendSql( "lateral (select t.*, row_number() over() " );
+			appendSql( ordinalitySubPart.asBasicValuedModelPart().getSelectionExpression() );
+			appendSql( " from table(" );
+			renderSimpleNamedFunction( functionName, sqlAstArguments, argumentRenderingMode );
+			append( ") t)" );
+		}
+		else {
+			appendSql( "table(" );
+			super.renderNamedSetReturningFunction( functionName, sqlAstArguments, tupleType, tableIdentifierVariable, argumentRenderingMode );
+			append( ')' );
+		}
+	}
+
 	@Override
 	public void visitSelectStatement(SelectStatement statement) {
 		if ( getQueryPartForRowNumbering() == statement.getQueryPart() && inLateral ) {

hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/DB2zLegacySqlAstTranslator.java

@@ -4,17 +4,13 @@
  */
 package org.hibernate.community.dialect;
 
-import org.hibernate.LockMode;
 import org.hibernate.dialect.DatabaseVersion;
 import org.hibernate.engine.spi.SessionFactoryImplementor;
 import org.hibernate.query.sqm.ComparisonOperator;
 import org.hibernate.sql.ast.tree.Statement;
 import org.hibernate.sql.ast.tree.expression.Expression;
 import org.hibernate.sql.ast.tree.expression.Literal;
-import org.hibernate.sql.ast.tree.from.FunctionTableReference;
+import org.hibernate.sql.ast.tree.from.QueryPartTableReference;
-import org.hibernate.sql.ast.tree.from.NamedTableReference;
-import org.hibernate.sql.ast.tree.from.TableGroup;
-import org.hibernate.sql.ast.tree.from.TableReference;
 import org.hibernate.sql.ast.tree.select.QueryPart;
 import org.hibernate.sql.exec.spi.JdbcOperation;
 
@@ -58,28 +54,10 @@ public class DB2zLegacySqlAstTranslator<T extends JdbcOperation> extends DB2Lega
 	}
 
 	@Override
-	protected boolean renderPrimaryTableReference(TableGroup tableGroup, LockMode lockMode) {
+	public void visitQueryPartTableReference(QueryPartTableReference tableReference) {
-		if ( shouldInlineCte( tableGroup ) ) {
-			inlineCteTableGroup( tableGroup, lockMode );
-			return false;
-		}
-		final TableReference tableReference = tableGroup.getPrimaryTableReference();
-		if ( tableReference instanceof NamedTableReference ) {
-			return renderNamedTableReference( (NamedTableReference) tableReference, lockMode );
-		}
 		// DB2 z/OS we need the "table" qualifier for table valued functions or lateral sub-queries
 		append( "table " );
-		tableReference.accept( this );
+		super.visitQueryPartTableReference( tableReference );
-		return false;
-	}
-
-	@Override
-	public void visitFunctionTableReference(FunctionTableReference tableReference) {
-		// For the table qualifier we need parenthesis on DB2 z/OS
-		append( OPEN_PARENTHESIS );
-		tableReference.getFunctionExpression().accept( this );
-		append( CLOSE_PARENTHESIS );
-		renderDerivedTableReference( tableReference );
 	}
 
 	@Override

hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/H2LegacyDialect.java

@@ -14,6 +14,7 @@ import java.util.Date;
 import java.util.List;
 import java.util.TimeZone;
 
+import org.checkerframework.checker.nullness.qual.Nullable;
 import org.hibernate.PessimisticLockException;
 import org.hibernate.QueryTimeoutException;
 import org.hibernate.boot.model.FunctionContributions;
@@ -97,7 +98,6 @@ import static org.hibernate.type.SqlTypes.FLOAT;
 import static org.hibernate.type.SqlTypes.GEOMETRY;
 import static org.hibernate.type.SqlTypes.INTERVAL_SECOND;
 import static org.hibernate.type.SqlTypes.JSON;
-import static org.hibernate.type.SqlTypes.JSON_ARRAY;
 import static org.hibernate.type.SqlTypes.LONG32NVARCHAR;
 import static org.hibernate.type.SqlTypes.LONG32VARBINARY;
 import static org.hibernate.type.SqlTypes.LONG32VARCHAR;
@@ -265,7 +265,6 @@ public class H2LegacyDialect extends Dialect {
 			}
 			if ( getVersion().isSameOrAfter( 1, 4, 200 ) ) {
 				ddlTypeRegistry.addDescriptor( new DdlTypeImpl( JSON, "json", this ) );
-				ddlTypeRegistry.addDescriptor( new DdlTypeImpl( JSON_ARRAY, "json", this ) );
 			}
 		}
 		ddlTypeRegistry.addDescriptor( new NativeEnumDdlTypeImpl( this ) );
@@ -296,7 +295,8 @@ public class H2LegacyDialect extends Dialect {
 		}
 		if ( getVersion().isSameOrAfter( 1, 4, 200 ) ) {
 			jdbcTypeRegistry.addDescriptorIfAbsent( H2JsonJdbcType.INSTANCE );
-			jdbcTypeRegistry.addDescriptorIfAbsent( H2JsonArrayJdbcType.INSTANCE );
+			// Replace the standard array constructor
+			jdbcTypeRegistry.addTypeConstructor( H2JsonArrayJdbcTypeConstructor.INSTANCE );
 		}
 		jdbcTypeRegistry.addDescriptor( EnumJdbcType.INSTANCE );
 		jdbcTypeRegistry.addDescriptor( OrdinalEnumJdbcType.INSTANCE );
@@ -427,6 +427,8 @@ public class H2LegacyDialect extends Dialect {
 		else {
 			functionFactory.listagg_groupConcat();
 		}
+
+		functionFactory.unnest_h2( getMaximumArraySize() );
 	}
 
 	/**
@@ -439,6 +441,11 @@ public class H2LegacyDialect extends Dialect {
 		return 1000;
 	}
 
+	@Override
+	public @Nullable String getDefaultOrdinalityColumnName() {
+		return "nord";
+	}
+
 	@Override
 	public void augmentPhysicalTableTypes(List<String> tableTypesList) {
 		if ( getVersion().isSameOrAfter( 2 ) ) {

hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/HANALegacyDialect.java

@@ -488,18 +488,28 @@ public class HANALegacyDialect extends Dialect {
 				typeConfiguration
 		);
 
-		if ( getVersion().isSameOrAfter(2, 0, 20) ) {
+		if ( getVersion().isSameOrAfter( 2, 0 ) ) {
-			// Introduced in 2.0 SPS 02
+			// Introduced in 2.0 SPS 00
 			functionFactory.jsonValue_no_passing();
 			functionFactory.jsonQuery_no_passing();
 			functionFactory.jsonExists_hana();
-			if ( getVersion().isSameOrAfter(2, 0, 40) ) {
+
-				// Introduced in 2.0 SPS 04
+			functionFactory.unnest_hana();
-				functionFactory.jsonObject_hana();
+//			functionFactory.json_table();
-				functionFactory.jsonArray_hana();
+
-				functionFactory.jsonArrayAgg_hana();
+			if ( getVersion().isSameOrAfter(2, 0, 20 ) ) {
-				functionFactory.jsonObjectAgg_hana();
+				if ( getVersion().isSameOrAfter( 2, 0, 40 ) ) {
+					// Introduced in 2.0 SPS 04
+					functionFactory.jsonObject_hana();
+					functionFactory.jsonArray_hana();
+					functionFactory.jsonArrayAgg_hana();
+					functionFactory.jsonObjectAgg_hana();
+				}
+
+//				functionFactory.xmltable();
 			}
+
+//			functionFactory.xmlextract();
 		}
 	}
 

hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/HANALegacySqlAstTranslator.java

@@ -9,17 +9,22 @@ import java.util.List;
 import org.hibernate.MappingException;
 import org.hibernate.engine.spi.SessionFactoryImplementor;
 import org.hibernate.internal.util.collections.Stack;
+import org.hibernate.metamodel.mapping.CollectionPart;
+import org.hibernate.metamodel.mapping.ModelPart;
 import org.hibernate.query.IllegalQueryOperationException;
+import org.hibernate.query.derived.AnonymousTupleTableGroupProducer;
 import org.hibernate.query.sqm.ComparisonOperator;
 import org.hibernate.sql.ast.Clause;
 import org.hibernate.sql.ast.SqlAstNodeRenderingMode;
 import org.hibernate.sql.ast.spi.AbstractSqlAstTranslator;
+import org.hibernate.sql.ast.tree.SqlAstNode;
 import org.hibernate.sql.ast.tree.Statement;
 import org.hibernate.sql.ast.tree.cte.CteStatement;
 import org.hibernate.sql.ast.tree.expression.BinaryArithmeticExpression;
 import org.hibernate.sql.ast.tree.expression.Expression;
 import org.hibernate.sql.ast.tree.expression.Literal;
 import org.hibernate.sql.ast.tree.expression.Summarization;
+import org.hibernate.sql.ast.tree.from.DerivedTableReference;
 import org.hibernate.sql.ast.tree.from.FunctionTableReference;
 import org.hibernate.sql.ast.tree.from.NamedTableReference;
 import org.hibernate.sql.ast.tree.from.QueryPartTableReference;
@@ -34,6 +39,8 @@ import org.hibernate.sql.ast.tree.update.UpdateStatement;
 import org.hibernate.sql.exec.spi.JdbcOperation;
 import org.hibernate.sql.model.internal.TableInsertStandard;
 
+import static org.hibernate.dialect.SybaseASESqlAstTranslator.isLob;
+
 /**
  * An SQL AST translator for the Legacy HANA dialect.
  */
@@ -192,15 +199,35 @@ public class HANALegacySqlAstTranslator<T extends JdbcOperation> extends Abstrac
 	}
 
 	@Override
-	protected SqlAstNodeRenderingMode getParameterRenderingMode() {
+	protected void renderDerivedTableReference(DerivedTableReference tableReference) {
-		// HANA does not support parameters in lateral subqueries for some reason, so inline all the parameters in this case
+		if ( tableReference instanceof FunctionTableReference && tableReference.isLateral() ) {
-		return inLateral ? SqlAstNodeRenderingMode.INLINE_ALL_PARAMETERS : super.getParameterRenderingMode();
+			// No need for a lateral keyword for functions
+			tableReference.accept( this );
+		}
+		else {
+			super.renderDerivedTableReference( tableReference );
+		}
 	}
 
 	@Override
-	public void visitFunctionTableReference(FunctionTableReference tableReference) {
+	public void renderNamedSetReturningFunction(String functionName, List<? extends SqlAstNode> sqlAstArguments, AnonymousTupleTableGroupProducer tupleType, String tableIdentifierVariable, SqlAstNodeRenderingMode argumentRenderingMode) {
-		tableReference.getFunctionExpression().accept( this );
+		final ModelPart ordinalitySubPart = tupleType.findSubPart( CollectionPart.Nature.INDEX.getName(), null );
-		renderTableReferenceIdentificationVariable( tableReference );
+		if ( ordinalitySubPart != null ) {
+			appendSql( "(select t.*, row_number() over() " );
+			appendSql( ordinalitySubPart.asBasicValuedModelPart().getSelectionExpression() );
+			appendSql( " from " );
+			renderSimpleNamedFunction( functionName, sqlAstArguments, argumentRenderingMode );
+			append( " t)" );
+		}
+		else {
+			super.renderNamedSetReturningFunction( functionName, sqlAstArguments, tupleType, tableIdentifierVariable, argumentRenderingMode );
+		}
+	}
+
+	@Override
+	protected SqlAstNodeRenderingMode getParameterRenderingMode() {
+		// HANA does not support parameters in lateral subqueries for some reason, so inline all the parameters in this case
+		return inLateral ? SqlAstNodeRenderingMode.INLINE_ALL_PARAMETERS : super.getParameterRenderingMode();
 	}
 
 	@Override
@@ -212,7 +239,38 @@ public class HANALegacySqlAstTranslator<T extends JdbcOperation> extends Abstrac
 
 	@Override
 	protected void renderComparison(Expression lhs, ComparisonOperator operator, Expression rhs) {
+		// In SAP HANA, LOBs are not "comparable", so we have to use a like predicate for comparison
+		final boolean isLob = isLob( lhs.getExpressionType() );
 		if ( operator == ComparisonOperator.DISTINCT_FROM || operator == ComparisonOperator.NOT_DISTINCT_FROM ) {
+			if ( isLob ) {
+				switch ( operator ) {
+					case DISTINCT_FROM:
+						appendSql( "case when " );
+						lhs.accept( this );
+						appendSql( " like " );
+						rhs.accept( this );
+						appendSql( " or " );
+						lhs.accept( this );
+						appendSql( " is null and " );
+						rhs.accept( this );
+						appendSql( " is null then 0 else 1 end=1" );
+						return;
+					case NOT_DISTINCT_FROM:
+						appendSql( "case when " );
+						lhs.accept( this );
+						appendSql( " like " );
+						rhs.accept( this );
+						appendSql( " or " );
+						lhs.accept( this );
+						appendSql( " is null and " );
+						rhs.accept( this );
+						appendSql( " is null then 0 else 1 end=0" );
+						return;
+					default:
+						// Fall through
+						break;
+				}
+			}
 			// HANA does not support plain parameters in the select clause of the intersect emulation
 			withParameterRenderingMode(
 					SqlAstNodeRenderingMode.NO_PLAIN_PARAMETER,
@@ -220,7 +278,24 @@ public class HANALegacySqlAstTranslator<T extends JdbcOperation> extends Abstrac
 			);
 		}
 		else {
-			renderComparisonEmulateIntersect( lhs, operator, rhs );
+			if ( isLob ) {
+				switch ( operator ) {
+					case EQUAL:
+						lhs.accept( this );
+						appendSql( " like " );
+						rhs.accept( this );
+						return;
+					case NOT_EQUAL:
+						lhs.accept( this );
+						appendSql( " not like " );
+						rhs.accept( this );
+						return;
+					default:
+						// Fall through
+						break;
+				}
+			}
+			renderComparisonStandard( lhs, operator, rhs );
 		}
 	}
 

hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/HSQLLegacyDialect.java

@@ -9,6 +9,7 @@ import java.sql.DatabaseMetaData;
 import java.sql.SQLException;
 import java.sql.Types;
 
+import org.checkerframework.checker.nullness.qual.Nullable;
 import org.hibernate.JDBCException;
 import org.hibernate.LockMode;
 import org.hibernate.StaleObjectStateException;
@@ -277,6 +278,8 @@ public class HSQLLegacyDialect extends Dialect {
 			functionFactory.jsonObjectAgg_h2();
 		}
 
+		functionFactory.unnest( "c1", "c2" );
+
 		//trim() requires parameters to be cast when used as trim character
 		functionContributions.getFunctionRegistry().register( "trim", new TrimFunction(
 				this,
@@ -285,6 +288,11 @@ public class HSQLLegacyDialect extends Dialect {
 		) );
 	}
 
+	@Override
+	public @Nullable String getDefaultOrdinalityColumnName() {
+		return "c2";
+	}
+
 	@Override
 	public String currentTime() {
 		return "localtime";

hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/HSQLLegacySqlAstTranslator.java

@@ -22,6 +22,8 @@ import org.hibernate.sql.ast.tree.expression.Expression;
 import org.hibernate.sql.ast.tree.expression.Literal;
 import org.hibernate.sql.ast.tree.expression.SqlTuple;
 import org.hibernate.sql.ast.tree.expression.Summarization;
+import org.hibernate.sql.ast.tree.from.DerivedTableReference;
+import org.hibernate.sql.ast.tree.from.FunctionTableReference;
 import org.hibernate.sql.ast.tree.from.NamedTableReference;
 import org.hibernate.sql.ast.tree.insert.ConflictClause;
 import org.hibernate.sql.ast.tree.insert.InsertSelectStatement;
@@ -72,6 +74,17 @@ public class HSQLLegacySqlAstTranslator<T extends JdbcOperation> extends Abstrac
 		}
 	}
 
+	@Override
+	protected void renderDerivedTableReference(DerivedTableReference tableReference) {
+		if ( tableReference instanceof FunctionTableReference && tableReference.isLateral() ) {
+			// No need for a lateral keyword for functions
+			tableReference.accept( this );
+		}
+		else {
+			super.renderDerivedTableReference( tableReference );
+		}
+	}
+
 	@Override
 	protected void visitConflictClause(ConflictClause conflictClause) {
 		if ( conflictClause != null ) {

hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/MariaDBLegacyDialect.java

@@ -29,7 +29,7 @@ import org.hibernate.tool.schema.extract.spi.SequenceInformationExtractor;
 import org.hibernate.type.SqlTypes;
 import org.hibernate.type.StandardBasicTypes;
 import org.hibernate.type.descriptor.jdbc.JdbcType;
-import org.hibernate.type.descriptor.jdbc.JsonArrayJdbcType;
+import org.hibernate.type.descriptor.jdbc.JsonArrayJdbcTypeConstructor;
 import org.hibernate.type.descriptor.jdbc.JsonJdbcType;
 import org.hibernate.type.descriptor.jdbc.spi.JdbcTypeRegistry;
 import org.hibernate.type.descriptor.sql.internal.DdlTypeImpl;
@@ -96,7 +96,12 @@ public class MariaDBLegacyDialect extends MySQLLegacyDialect {
 			commonFunctionFactory.jsonArrayAgg_mariadb();
 			commonFunctionFactory.jsonObjectAgg_mariadb();
 			commonFunctionFactory.jsonArrayAppend_mariadb();
+
 			if ( getVersion().isSameOrAfter( 10, 3, 3 ) ) {
+				if ( getVersion().isSameOrAfter( 10, 6 ) ) {
+					commonFunctionFactory.unnest_emulated();
+				}
+
 				commonFunctionFactory.inverseDistributionOrderedSetAggregates_windowEmulation();
 				functionContributions.getFunctionRegistry().patternDescriptorBuilder( "median", "median(?1) over ()" )
 						.setInvariantType( functionContributions.getTypeConfiguration().getBasicTypeRegistry().resolve( StandardBasicTypes.DOUBLE ) )
@@ -145,7 +150,7 @@ public class MariaDBLegacyDialect extends MySQLLegacyDialect {
 		final JdbcTypeRegistry jdbcTypeRegistry = typeContributions.getTypeConfiguration().getJdbcTypeRegistry();
 		// Make sure we register the JSON type descriptor before calling super, because MariaDB does not need casting
 		jdbcTypeRegistry.addDescriptorIfAbsent( SqlTypes.JSON, JsonJdbcType.INSTANCE );
-		jdbcTypeRegistry.addDescriptorIfAbsent( SqlTypes.JSON_ARRAY, JsonArrayJdbcType.INSTANCE );
+		jdbcTypeRegistry.addTypeConstructorIfAbsent( JsonArrayJdbcTypeConstructor.INSTANCE );
 
 		super.contributeTypes( typeContributions, serviceRegistry );
 		if ( getVersion().isSameOrAfter( 10, 7 ) ) {

hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/MariaDBLegacySqlAstTranslator.java

@@ -22,6 +22,7 @@ import org.hibernate.sql.ast.tree.expression.ColumnReference;
 import org.hibernate.sql.ast.tree.expression.Expression;
 import org.hibernate.sql.ast.tree.expression.Literal;
 import org.hibernate.sql.ast.tree.expression.Summarization;
+import org.hibernate.sql.ast.tree.from.DerivedTableReference;
 import org.hibernate.sql.ast.tree.from.NamedTableReference;
 import org.hibernate.sql.ast.tree.from.QueryPartTableReference;
 import org.hibernate.sql.ast.tree.insert.ConflictClause;
@@ -277,6 +278,11 @@ public class MariaDBLegacySqlAstTranslator<T extends JdbcOperation> extends Abst
 		emulateQueryPartTableReferenceColumnAliasing( tableReference );
 	}
 
+	@Override
+	protected void renderDerivedTableReferenceIdentificationVariable(DerivedTableReference tableReference) {
+		renderTableReferenceIdentificationVariable( tableReference );
+	}
+
 	@Override
 	public void visitOffsetFetchClause(QueryPart queryPart) {
 		if ( !isRowNumberingCurrentQueryPart() ) {

hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/MySQLLegacyDialect.java

@@ -537,6 +537,11 @@ public class MySQLLegacyDialect extends Dialect {
 		return Types.BIT;
 	}
 
+	@Override
+	public int getPreferredSqlTypeCodeForArray() {
+		return getMySQLVersion().isSameOrAfter( 5, 7 ) ? SqlTypes.JSON_ARRAY : super.getPreferredSqlTypeCodeForArray();
+	}
+
 //	@Override
 //	public int getDefaultDecimalPrecision() {
 //		//this is the maximum, but I guess it's too high
@@ -667,6 +672,10 @@ public class MySQLLegacyDialect extends Dialect {
 			functionFactory.jsonMergepatch_mysql();
 			functionFactory.jsonArrayAppend_mysql();
 			functionFactory.jsonArrayInsert_mysql();
+
+			if ( getMySQLVersion().isSameOrAfter( 8 ) ) {
+				functionFactory.unnest_emulated();
+			}
 		}
 	}
 
@@ -678,7 +687,7 @@ public class MySQLLegacyDialect extends Dialect {
 
 		if ( getMySQLVersion().isSameOrAfter( 5, 7 ) ) {
 			jdbcTypeRegistry.addDescriptorIfAbsent( SqlTypes.JSON, MySQLCastingJsonJdbcType.INSTANCE );
-			jdbcTypeRegistry.addDescriptorIfAbsent( SqlTypes.JSON_ARRAY, MySQLCastingJsonArrayJdbcType.INSTANCE );
+			jdbcTypeRegistry.addTypeConstructorIfAbsent( MySQLCastingJsonArrayJdbcTypeConstructor.INSTANCE );
 		}
 
 		// MySQL requires a custom binder for binding untyped nulls with the NULL type

hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/MySQLLegacySqlAstTranslator.java

@@ -23,6 +23,8 @@ import org.hibernate.sql.ast.tree.expression.ColumnReference;
 import org.hibernate.sql.ast.tree.expression.Expression;
 import org.hibernate.sql.ast.tree.expression.Literal;
 import org.hibernate.sql.ast.tree.expression.Summarization;
+import org.hibernate.sql.ast.tree.from.DerivedTableReference;
+import org.hibernate.sql.ast.tree.from.FunctionTableReference;
 import org.hibernate.sql.ast.tree.from.NamedTableReference;
 import org.hibernate.sql.ast.tree.from.QueryPartTableReference;
 import org.hibernate.sql.ast.tree.from.ValuesTableReference;
@@ -269,6 +271,27 @@ public class MySQLLegacySqlAstTranslator<T extends JdbcOperation> extends Abstra
 		}
 	}
 
+	@Override
+	protected void renderDerivedTableReference(DerivedTableReference tableReference) {
+		if ( tableReference instanceof FunctionTableReference && tableReference.isLateral() ) {
+			// No need for a lateral keyword for functions
+			tableReference.accept( this );
+		}
+		else {
+			super.renderDerivedTableReference( tableReference );
+		}
+	}
+
+	@Override
+	protected void renderDerivedTableReferenceIdentificationVariable(DerivedTableReference tableReference) {
+		if ( getDialect().getVersion().isSameOrAfter( 8 ) ) {
+			super.renderDerivedTableReferenceIdentificationVariable( tableReference );
+		}
+		else {
+			renderTableReferenceIdentificationVariable( tableReference );
+		}
+	}
+
 	@Override
 	public void visitOffsetFetchClause(QueryPart queryPart) {
 		if ( !isRowNumberingCurrentQueryPart() ) {

hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/OracleLegacyDialect.java

@@ -91,7 +91,6 @@ import org.hibernate.type.descriptor.jdbc.BlobJdbcType;
 import org.hibernate.type.descriptor.jdbc.JdbcType;
 import org.hibernate.type.descriptor.jdbc.NullJdbcType;
 import org.hibernate.type.descriptor.jdbc.ObjectNullAsNullTypeJdbcType;
-import org.hibernate.type.descriptor.jdbc.OracleJsonArrayBlobJdbcType;
 import org.hibernate.type.descriptor.jdbc.OracleJsonBlobJdbcType;
 import org.hibernate.type.descriptor.jdbc.SqlTypedJdbcType;
 import org.hibernate.type.descriptor.jdbc.spi.JdbcTypeRegistry;
@@ -123,7 +122,6 @@ import static org.hibernate.type.SqlTypes.FLOAT;
 import static org.hibernate.type.SqlTypes.GEOMETRY;
 import static org.hibernate.type.SqlTypes.INTEGER;
 import static org.hibernate.type.SqlTypes.JSON;
-import static org.hibernate.type.SqlTypes.JSON_ARRAY;
 import static org.hibernate.type.SqlTypes.NUMERIC;
 import static org.hibernate.type.SqlTypes.NVARCHAR;
 import static org.hibernate.type.SqlTypes.REAL;
@@ -335,6 +333,8 @@ public class OracleLegacyDialect extends Dialect {
 		functionFactory.xmlquery_oracle();
 		functionFactory.xmlexists();
 		functionFactory.xmlagg();
+
+		functionFactory.unnest_oracle();
 	}
 
 	@Override
@@ -745,11 +745,9 @@ public class OracleLegacyDialect extends Dialect {
 			ddlTypeRegistry.addDescriptor( new DdlTypeImpl( GEOMETRY, "MDSYS.SDO_GEOMETRY", this ) );
 			if ( getVersion().isSameOrAfter( 21 ) ) {
 				ddlTypeRegistry.addDescriptor( new DdlTypeImpl( JSON, "json", this ) );
-				ddlTypeRegistry.addDescriptor( new DdlTypeImpl( JSON_ARRAY, "json", this ) );
 			}
 			else if ( getVersion().isSameOrAfter( 12 ) ) {
 				ddlTypeRegistry.addDescriptor( new DdlTypeImpl( JSON, "blob", this ) );
-				ddlTypeRegistry.addDescriptor( new DdlTypeImpl( JSON_ARRAY, "blob", this ) );
 			}
 		}
 
@@ -919,11 +917,11 @@ public class OracleLegacyDialect extends Dialect {
 
 			if ( getVersion().isSameOrAfter( 21 ) ) {
 				typeContributions.contributeJdbcType( OracleJsonJdbcType.INSTANCE );
-				typeContributions.contributeJdbcType( OracleJsonArrayJdbcType.INSTANCE );
+				typeContributions.contributeJdbcTypeConstructor( OracleJsonArrayJdbcTypeConstructor.NATIVE_INSTANCE );
 			}
 			else {
 				typeContributions.contributeJdbcType( OracleJsonBlobJdbcType.INSTANCE );
-				typeContributions.contributeJdbcType( OracleJsonArrayBlobJdbcType.INSTANCE );
+				typeContributions.contributeJdbcTypeConstructor( OracleJsonArrayJdbcTypeConstructor.BLOB_INSTANCE );
 			}
 		}
 

hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/OracleLegacySqlAstTranslator.java

@@ -10,18 +10,23 @@ import java.util.List;
 import org.hibernate.dialect.OracleArrayJdbcType;
 import org.hibernate.engine.spi.SessionFactoryImplementor;
 import org.hibernate.internal.util.collections.Stack;
+import org.hibernate.metamodel.mapping.CollectionPart;
 import org.hibernate.metamodel.mapping.EmbeddableValuedModelPart;
 import org.hibernate.metamodel.mapping.EntityIdentifierMapping;
 import org.hibernate.metamodel.mapping.EntityMappingType;
 import org.hibernate.metamodel.mapping.JdbcMappingContainer;
+import org.hibernate.metamodel.mapping.ModelPart;
 import org.hibernate.query.IllegalQueryOperationException;
+import org.hibernate.query.derived.AnonymousTupleTableGroupProducer;
 import org.hibernate.query.sqm.ComparisonOperator;
 import org.hibernate.query.sqm.FetchClauseType;
 import org.hibernate.query.sqm.FrameExclusion;
 import org.hibernate.query.sqm.FrameKind;
 import org.hibernate.sql.ast.Clause;
+import org.hibernate.sql.ast.SqlAstNodeRenderingMode;
 import org.hibernate.sql.ast.spi.AbstractSqlAstTranslator;
 import org.hibernate.sql.ast.spi.SqlSelection;
+import org.hibernate.sql.ast.tree.SqlAstNode;
 import org.hibernate.sql.ast.tree.Statement;
 import org.hibernate.sql.ast.tree.cte.CteMaterialization;
 import org.hibernate.sql.ast.tree.expression.CaseSearchedExpression;
@@ -33,6 +38,7 @@ import org.hibernate.sql.ast.tree.expression.Over;
 import org.hibernate.sql.ast.tree.expression.SqlTuple;
 import org.hibernate.sql.ast.tree.expression.SqlTupleContainer;
 import org.hibernate.sql.ast.tree.expression.Summarization;
+import org.hibernate.sql.ast.tree.from.DerivedTableReference;
 import org.hibernate.sql.ast.tree.from.FromClause;
 import org.hibernate.sql.ast.tree.from.FunctionTableReference;
 import org.hibernate.sql.ast.tree.from.NamedTableReference;
@@ -298,9 +304,42 @@ public class OracleLegacySqlAstTranslator<T extends JdbcOperation> extends Abstr
 
 	@Override
 	public void visitFunctionTableReference(FunctionTableReference tableReference) {
-		append( "table(" );
 		tableReference.getFunctionExpression().accept( this );
-		append( CLOSE_PARENTHESIS );
+		if ( !tableReference.rendersIdentifierVariable() ) {
+			renderDerivedTableReferenceIdentificationVariable( tableReference );
+		}
+	}
+
+	@Override
+	public void renderNamedSetReturningFunction(String functionName, List<? extends SqlAstNode> sqlAstArguments, AnonymousTupleTableGroupProducer tupleType, String tableIdentifierVariable, SqlAstNodeRenderingMode argumentRenderingMode) {
+		final ModelPart ordinalitySubPart = tupleType.findSubPart( CollectionPart.Nature.INDEX.getName(), null );
+		if ( ordinalitySubPart != null ) {
+			appendSql( "lateral (select t.*, rownum " );
+			appendSql( ordinalitySubPart.asBasicValuedModelPart().getSelectionExpression() );
+			appendSql( " from table(" );
+			renderSimpleNamedFunction( functionName, sqlAstArguments, argumentRenderingMode );
+			append( ") t)" );
+		}
+		else {
+			appendSql( "table(" );
+			super.renderNamedSetReturningFunction( functionName, sqlAstArguments, tupleType, tableIdentifierVariable, argumentRenderingMode );
+			append( ')' );
+		}
+	}
+
+	@Override
+	protected void renderDerivedTableReference(DerivedTableReference tableReference) {
+		if ( tableReference instanceof FunctionTableReference && tableReference.isLateral() ) {
+			// No need for a lateral keyword for functions
+			tableReference.accept( this );
+		}
+		else {
+			super.renderDerivedTableReference( tableReference );
+		}
+	}
+
+	@Override
+	protected void renderDerivedTableReferenceIdentificationVariable(DerivedTableReference tableReference) {
 		renderTableReferenceIdentificationVariable( tableReference );
 	}
 

hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/PostgreSQLLegacyDialect.java

@@ -17,6 +17,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.TimeZone;
 
+import org.checkerframework.checker.nullness.qual.Nullable;
 import org.hibernate.Length;
 import org.hibernate.LockMode;
 import org.hibernate.LockOptions;
@@ -109,7 +110,6 @@ import static org.hibernate.type.SqlTypes.GEOGRAPHY;
 import static org.hibernate.type.SqlTypes.GEOMETRY;
 import static org.hibernate.type.SqlTypes.INET;
 import static org.hibernate.type.SqlTypes.JSON;
-import static org.hibernate.type.SqlTypes.JSON_ARRAY;
 import static org.hibernate.type.SqlTypes.LONG32NVARCHAR;
 import static org.hibernate.type.SqlTypes.LONG32VARBINARY;
 import static org.hibernate.type.SqlTypes.LONG32VARCHAR;
@@ -259,11 +259,9 @@ public class PostgreSQLLegacyDialect extends Dialect {
 			// Prefer jsonb if possible
 			if ( getVersion().isSameOrAfter( 9, 4 ) ) {
 				ddlTypeRegistry.addDescriptor( new DdlTypeImpl( JSON, "jsonb", this ) );
-				ddlTypeRegistry.addDescriptor( new DdlTypeImpl( JSON_ARRAY, "jsonb", this ) );
 			}
 			else {
 				ddlTypeRegistry.addDescriptor( new DdlTypeImpl( JSON, "json", this ) );
-				ddlTypeRegistry.addDescriptor( new DdlTypeImpl( JSON_ARRAY, "json", this ) );
 			}
 		}
 		ddlTypeRegistry.addDescriptor( new NamedNativeEnumDdlTypeImpl( this ) );
@@ -706,6 +704,18 @@ public class PostgreSQLLegacyDialect extends Dialect {
 		);
 		functionContributions.getFunctionRegistry().registerAlternateKey( "truncate", "trunc" );
 		functionFactory.dateTrunc();
+
+		if ( getVersion().isSameOrAfter( 17 ) ) {
+			functionFactory.unnest( null, "ordinality" );
+		}
+		else {
+			functionFactory.unnest_postgresql();
+		}
+	}
+
+	@Override
+	public @Nullable String getDefaultOrdinalityColumnName() {
+		return "ordinality";
 	}
 
 	/**
@@ -1460,21 +1470,21 @@ public class PostgreSQLLegacyDialect extends Dialect {
 					if ( getVersion().isSameOrAfter( 9, 4 ) ) {
 						if ( PgJdbcHelper.isUsable( serviceRegistry ) ) {
 							jdbcTypeRegistry.addDescriptorIfAbsent( PgJdbcHelper.getJsonbJdbcType( serviceRegistry ) );
-							jdbcTypeRegistry.addDescriptorIfAbsent( PgJdbcHelper.getJsonbArrayJdbcType( serviceRegistry ) );
+							jdbcTypeRegistry.addTypeConstructorIfAbsent( PgJdbcHelper.getJsonbArrayJdbcType( serviceRegistry ) );
 						}
 						else {
 							jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingJsonJdbcType.JSONB_INSTANCE );
-							jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingJsonArrayJdbcType.JSONB_INSTANCE );
+							jdbcTypeRegistry.addTypeConstructorIfAbsent( PostgreSQLCastingJsonArrayJdbcTypeConstructor.JSONB_INSTANCE );
 						}
 					}
 					else {
 						if ( PgJdbcHelper.isUsable( serviceRegistry ) ) {
 							jdbcTypeRegistry.addDescriptorIfAbsent( PgJdbcHelper.getJsonJdbcType( serviceRegistry ) );
-							jdbcTypeRegistry.addDescriptorIfAbsent( PgJdbcHelper.getJsonArrayJdbcType( serviceRegistry ) );
+							jdbcTypeRegistry.addTypeConstructorIfAbsent( PgJdbcHelper.getJsonArrayJdbcType( serviceRegistry ) );
 						}
 						else {
 							jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingJsonJdbcType.JSON_INSTANCE );
-							jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingJsonArrayJdbcType.JSON_INSTANCE );
+							jdbcTypeRegistry.addTypeConstructorIfAbsent( PostgreSQLCastingJsonArrayJdbcTypeConstructor.JSON_INSTANCE );
 						}
 					}
 				}
@@ -1490,11 +1500,11 @@ public class PostgreSQLLegacyDialect extends Dialect {
 				if ( getVersion().isSameOrAfter( 9, 2 ) ) {
 					if ( getVersion().isSameOrAfter( 9, 4 ) ) {
 						jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingJsonJdbcType.JSONB_INSTANCE );
-						jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingJsonArrayJdbcType.JSONB_INSTANCE );
+						jdbcTypeRegistry.addTypeConstructorIfAbsent( PostgreSQLCastingJsonArrayJdbcTypeConstructor.JSONB_INSTANCE );
 					}
 					else {
 						jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingJsonJdbcType.JSON_INSTANCE );
-						jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingJsonArrayJdbcType.JSON_INSTANCE );
+						jdbcTypeRegistry.addTypeConstructorIfAbsent( PostgreSQLCastingJsonArrayJdbcTypeConstructor.JSON_INSTANCE );
 					}
 				}
 			}
@@ -1513,6 +1523,7 @@ public class PostgreSQLLegacyDialect extends Dialect {
 				)
 		);
 
+		// Replace the standard array constructor
 		jdbcTypeRegistry.addTypeConstructor( PostgreSQLArrayJdbcTypeConstructor.INSTANCE );
 	}
 

hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/SQLServerLegacyDialect.java

@@ -16,6 +16,8 @@ import org.hibernate.dialect.DatabaseVersion;
 import org.hibernate.dialect.Dialect;
 import org.hibernate.dialect.DmlTargetColumnQualifierSupport;
 import org.hibernate.dialect.Replacer;
+import org.hibernate.dialect.SQLServerCastingXmlArrayJdbcTypeConstructor;
+import org.hibernate.dialect.SQLServerCastingXmlJdbcType;
 import org.hibernate.dialect.TimeZoneSupport;
 import org.hibernate.dialect.function.CommonFunctionFactory;
 import org.hibernate.dialect.function.CountFunction;
@@ -74,7 +76,6 @@ import org.hibernate.type.descriptor.jdbc.JdbcType;
 import org.hibernate.type.descriptor.jdbc.TimestampUtcAsJdbcTimestampJdbcType;
 import org.hibernate.type.descriptor.jdbc.TinyIntAsSmallIntJdbcType;
 import org.hibernate.type.descriptor.jdbc.UUIDJdbcType;
-import org.hibernate.type.descriptor.jdbc.XmlJdbcType;
 import org.hibernate.type.descriptor.jdbc.spi.JdbcTypeRegistry;
 import org.hibernate.type.descriptor.sql.internal.DdlTypeImpl;
 import org.hibernate.type.descriptor.sql.spi.DdlTypeRegistry;
@@ -244,6 +245,11 @@ public class SQLServerLegacyDialect extends AbstractTransactSQLDialect {
 		ddlTypeRegistry.addDescriptor( new DdlTypeImpl( UUID, "uniqueidentifier", this ) );
 	}
 
+	@Override
+	public int getPreferredSqlTypeCodeForArray() {
+		return XML_ARRAY;
+	}
+
 	@Override
 	public JdbcType resolveSqlTypeDescriptor(
 			String columnTypeName,
@@ -308,8 +314,9 @@ public class SQLServerLegacyDialect extends AbstractTransactSQLDialect {
 				Types.TINYINT,
 				TinyIntAsSmallIntJdbcType.INSTANCE
 		);
-		typeContributions.contributeJdbcType( XmlJdbcType.INSTANCE );
+		typeContributions.contributeJdbcType( SQLServerCastingXmlJdbcType.INSTANCE );
 		typeContributions.contributeJdbcType( UUIDJdbcType.INSTANCE );
+		typeContributions.contributeJdbcTypeConstructor( SQLServerCastingXmlArrayJdbcTypeConstructor.INSTANCE );
 	}
 
 	@Override
@@ -421,6 +428,9 @@ public class SQLServerLegacyDialect extends AbstractTransactSQLDialect {
 		functionFactory.xmlquery_sqlserver();
 		functionFactory.xmlexists_sqlserver();
 		functionFactory.xmlagg_sqlserver();
+
+		functionFactory.unnest_sqlserver();
+
 		if ( getVersion().isSameOrAfter( 14 ) ) {
 			functionFactory.listagg_stringAggWithinGroup( "varchar(max)" );
 			functionFactory.jsonArrayAgg_sqlserver( getVersion().isSameOrAfter( 16 ) );

hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/SQLServerLegacySqlAstTranslator.java

@@ -11,14 +11,19 @@ import org.hibernate.LockOptions;
 import org.hibernate.dialect.DatabaseVersion;
 import org.hibernate.engine.spi.SessionFactoryImplementor;
 import org.hibernate.internal.util.collections.Stack;
+import org.hibernate.metamodel.mapping.CollectionPart;
 import org.hibernate.metamodel.mapping.JdbcMappingContainer;
+import org.hibernate.metamodel.mapping.ModelPart;
 import org.hibernate.query.IllegalQueryOperationException;
+import org.hibernate.query.derived.AnonymousTupleTableGroupProducer;
 import org.hibernate.query.sqm.ComparisonOperator;
 import org.hibernate.query.sqm.FetchClauseType;
 import org.hibernate.sql.ast.Clause;
 import org.hibernate.sql.ast.SqlAstJoinType;
+import org.hibernate.sql.ast.SqlAstNodeRenderingMode;
 import org.hibernate.sql.ast.spi.AbstractSqlAstTranslator;
 import org.hibernate.sql.ast.spi.SqlSelection;
+import org.hibernate.sql.ast.tree.SqlAstNode;
 import org.hibernate.sql.ast.tree.Statement;
 import org.hibernate.sql.ast.tree.delete.DeleteStatement;
 import org.hibernate.sql.ast.tree.expression.BinaryArithmeticExpression;
@@ -26,10 +31,9 @@ import org.hibernate.sql.ast.tree.expression.Expression;
 import org.hibernate.sql.ast.tree.expression.Literal;
 import org.hibernate.sql.ast.tree.expression.SqlTuple;
 import org.hibernate.sql.ast.tree.expression.Summarization;
+import org.hibernate.sql.ast.tree.from.DerivedTableReference;
 import org.hibernate.sql.ast.tree.from.NamedTableReference;
-import org.hibernate.sql.ast.tree.from.TableGroup;
 import org.hibernate.sql.ast.tree.from.TableGroupJoin;
-import org.hibernate.sql.ast.tree.from.TableReference;
 import org.hibernate.sql.ast.tree.from.UnionTableReference;
 import org.hibernate.sql.ast.tree.insert.ConflictClause;
 import org.hibernate.sql.ast.tree.insert.InsertSelectStatement;
@@ -180,17 +184,24 @@ public class SQLServerLegacySqlAstTranslator<T extends JdbcOperation> extends Ab
 		}
 	}
 
-	protected boolean renderPrimaryTableReference(TableGroup tableGroup, LockMode lockMode) {
+	@Override
-		if ( shouldInlineCte( tableGroup ) ) {
+	protected void renderDerivedTableReference(DerivedTableReference tableReference) {
-			inlineCteTableGroup( tableGroup, lockMode );
-			return false;
-		}
-		final TableReference tableReference = tableGroup.getPrimaryTableReference();
-		if ( tableReference instanceof NamedTableReference ) {
-			return renderNamedTableReference( (NamedTableReference) tableReference, lockMode );
-		}
 		tableReference.accept( this );
-		return false;
+	}
+
+	@Override
+	public void renderNamedSetReturningFunction(String functionName, List<? extends SqlAstNode> sqlAstArguments, AnonymousTupleTableGroupProducer tupleType, String tableIdentifierVariable, SqlAstNodeRenderingMode argumentRenderingMode) {
+		final ModelPart ordinalitySubPart = tupleType.findSubPart( CollectionPart.Nature.INDEX.getName(), null );
+		if ( ordinalitySubPart != null ) {
+			appendSql( "(select t.*, row_number() over(order by (select 1)) " );
+			appendSql( ordinalitySubPart.asBasicValuedModelPart().getSelectionExpression() );
+			appendSql( " from " );
+			renderSimpleNamedFunction( functionName, sqlAstArguments, argumentRenderingMode );
+			append( " t)" );
+		}
+		else {
+			super.renderNamedSetReturningFunction( functionName, sqlAstArguments, tupleType, tableIdentifierVariable, argumentRenderingMode );
+		}
 	}
 
 	@Override

hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/SybaseASELegacyDialect.java

@@ -12,10 +12,12 @@ import java.sql.Types;
 import org.hibernate.LockMode;
 import org.hibernate.LockOptions;
 import org.hibernate.QueryTimeoutException;
+import org.hibernate.boot.model.FunctionContributions;
 import org.hibernate.boot.model.TypeContributions;
 import org.hibernate.dialect.DatabaseVersion;
 import org.hibernate.dialect.Dialect;
 import org.hibernate.dialect.SybaseDriverKind;
+import org.hibernate.dialect.function.CommonFunctionFactory;
 import org.hibernate.dialect.pagination.LimitHandler;
 import org.hibernate.dialect.pagination.TopLimitHandler;
 import org.hibernate.engine.jdbc.Size;
@@ -52,6 +54,7 @@ import static org.hibernate.type.SqlTypes.DATE;
 import static org.hibernate.type.SqlTypes.TIME;
 import static org.hibernate.type.SqlTypes.TIMESTAMP;
 import static org.hibernate.type.SqlTypes.TIMESTAMP_WITH_TIMEZONE;
+import static org.hibernate.type.SqlTypes.XML_ARRAY;
 
 /**
  * A {@linkplain Dialect SQL dialect} for Sybase Adaptive Server Enterprise 11.9 and above.
@@ -140,6 +143,11 @@ public class SybaseASELegacyDialect extends SybaseLegacyDialect {
 		}
 	}
 
+	@Override
+	public int getPreferredSqlTypeCodeForArray() {
+		return XML_ARRAY;
+	}
+
 	@Override
 	public int getMaxVarcharLength() {
 		// the maximum length of a VARCHAR or VARBINARY
@@ -151,6 +159,15 @@ public class SybaseASELegacyDialect extends SybaseLegacyDialect {
 		return 16_384;
 	}
 
+	@Override
+	public void initializeFunctionRegistry(FunctionContributions functionContributions) {
+		super.initializeFunctionRegistry( functionContributions );
+
+		CommonFunctionFactory functionFactory = new CommonFunctionFactory( functionContributions);
+
+		functionFactory.unnest_sybasease();
+	}
+
 	private static boolean isAnsiNull(DatabaseMetaData databaseMetaData) {
 		if ( databaseMetaData != null ) {
 			try (java.sql.Statement s = databaseMetaData.getConnection().createStatement() ) {

hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/SybaseASELegacySqlAstTranslator.java

@@ -48,6 +48,8 @@ import org.hibernate.sql.ast.tree.select.SelectClause;
 import org.hibernate.sql.ast.tree.update.UpdateStatement;
 import org.hibernate.sql.exec.spi.JdbcOperation;
 
+import static org.hibernate.dialect.SybaseASESqlAstTranslator.isLob;
+
 /**
  * A SQL AST translator for Sybase ASE.
  *
@@ -336,7 +338,7 @@ public class SybaseASELegacySqlAstTranslator<T extends JdbcOperation> extends Ab
 		append( '(' );
 		visitValuesListEmulateSelectUnion( tableReference.getValuesList() );
 		append( ')' );
-		renderDerivedTableReference( tableReference );
+		renderDerivedTableReferenceIdentificationVariable( tableReference );
 	}
 
 	@Override
@@ -371,8 +373,56 @@ public class SybaseASELegacySqlAstTranslator<T extends JdbcOperation> extends Ab
 
 	@Override
 	protected void renderComparison(Expression lhs, ComparisonOperator operator, Expression rhs) {
+		// In Sybase ASE, XMLTYPE is not "comparable", so we have to cast the two parts to varchar for this purpose
+		final boolean isLob = isLob( lhs.getExpressionType() );
+		if ( isLob ) {
+			switch ( operator ) {
+				case EQUAL:
+					lhs.accept( this );
+					appendSql( " like " );
+					rhs.accept( this );
+					return;
+				case NOT_EQUAL:
+					lhs.accept( this );
+					appendSql( " not like " );
+					rhs.accept( this );
+					return;
+				default:
+					// Fall through
+					break;
+			}
+		}
 		// I think intersect is only supported in 16.0 SP3
 		if ( getDialect().isAnsiNullOn() ) {
+			if ( isLob ) {
+				switch ( operator ) {
+					case DISTINCT_FROM:
+						appendSql( "case when " );
+						lhs.accept( this );
+						appendSql( " like " );
+						rhs.accept( this );
+						appendSql( " or " );
+						lhs.accept( this );
+						appendSql( " is null and " );
+						rhs.accept( this );
+						appendSql( " is null then 0 else 1 end=1" );
+						return;
+					case NOT_DISTINCT_FROM:
+						appendSql( "case when " );
+						lhs.accept( this );
+						appendSql( " like " );
+						rhs.accept( this );
+						appendSql( " or " );
+						lhs.accept( this );
+						appendSql( " is null and " );
+						rhs.accept( this );
+						appendSql( " is null then 0 else 1 end=0" );
+						return;
+					default:
+						// Fall through
+						break;
+				}
+			}
 			if ( supportsDistinctFromPredicate() ) {
 				renderComparisonEmulateIntersect( lhs, operator, rhs );
 			}
@@ -393,10 +443,20 @@ public class SybaseASELegacySqlAstTranslator<T extends JdbcOperation> extends Ab
 				lhs.accept( this );
 				switch ( operator ) {
 					case DISTINCT_FROM:
-						appendSql( "<>" );
+						if ( isLob ) {
+							appendSql( " not like " );
+						}
+						else {
+							appendSql( "<>" );
+						}
 						break;
 					case NOT_DISTINCT_FROM:
-						appendSql( '=' );
+						if ( isLob ) {
+							appendSql( " like " );
+						}
+						else {
+							appendSql( '=' );
+						}
 						break;
 					case LESS_THAN:
 					case GREATER_THAN:

hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/SybaseLegacySqlAstTranslator.java

@@ -204,7 +204,7 @@ public class SybaseLegacySqlAstTranslator<T extends JdbcOperation> extends Abstr
 		append( '(' );
 		visitValuesListEmulateSelectUnion( tableReference.getValuesList() );
 		append( ')' );
-		renderDerivedTableReference( tableReference );
+		renderDerivedTableReferenceIdentificationVariable( tableReference );
 	}
 
 	@Override

hibernate-core/src/main/antlr/org/hibernate/grammars/hql/HqlParser.g4

@@ -225,6 +225,7 @@ entityWithJoins
 fromRoot
 	: entityName variable?							# RootEntity
 	| LEFT_PAREN subquery RIGHT_PAREN variable?		# RootSubquery
+	| setReturningFunction variable?				# RootFunction
 	;
 
 /**
@@ -275,8 +276,9 @@ joinType
  * The joined path, with an optional identification variable
  */
 joinTarget
-	: path variable?										#JoinPath
+	: path variable?										# JoinPath
-	| LATERAL? LEFT_PAREN subquery RIGHT_PAREN variable?	#JoinSubquery
+	| LATERAL? LEFT_PAREN subquery RIGHT_PAREN variable?	# JoinSubquery
+	| LATERAL? setReturningFunction variable?				# JoinFunction
 	;
 
 /**
@@ -1114,6 +1116,17 @@ function
 	| genericFunction
 	;
 
+setReturningFunction
+	: simpleSetReturningFunction
+	;
+
+/**
+ * A simple set returning function invocation without special syntax.
+ */
+simpleSetReturningFunction
+	: identifier LEFT_PAREN genericFunctionArguments? RIGHT_PAREN
+	;
+
 /**
  * A syntax for calling user-defined or native database functions, required by JPQL
  */

hibernate-core/src/main/java/org/hibernate/boot/model/process/spi/MetadataBuildingProcess.java

@@ -85,8 +85,11 @@ import org.hibernate.type.descriptor.java.ByteArrayJavaType;
 import org.hibernate.type.descriptor.java.CharacterArrayJavaType;
 import org.hibernate.type.descriptor.java.spi.JavaTypeRegistry;
 import org.hibernate.type.descriptor.jdbc.JdbcType;
-import org.hibernate.type.descriptor.jdbc.JsonArrayAsStringJdbcType;
+import org.hibernate.type.descriptor.jdbc.JsonArrayJdbcTypeConstructor;
+import org.hibernate.type.descriptor.jdbc.JsonAsStringArrayJdbcTypeConstructor;
 import org.hibernate.type.descriptor.jdbc.JsonAsStringJdbcType;
+import org.hibernate.type.descriptor.jdbc.XmlArrayJdbcTypeConstructor;
+import org.hibernate.type.descriptor.jdbc.XmlAsStringArrayJdbcTypeConstructor;
 import org.hibernate.type.descriptor.jdbc.XmlAsStringJdbcType;
 import org.hibernate.type.descriptor.jdbc.spi.JdbcTypeRegistry;
 import org.hibernate.type.descriptor.sql.DdlType;
@@ -103,7 +106,6 @@ import org.jboss.jandex.Indexer;
 import jakarta.persistence.AttributeConverter;
 
 import static org.hibernate.internal.util.collections.CollectionHelper.mutableJoin;
-import static org.hibernate.internal.util.config.ConfigurationHelper.getPreferredSqlTypeCodeForArray;
 import static org.hibernate.internal.util.config.ConfigurationHelper.getPreferredSqlTypeCodeForDuration;
 import static org.hibernate.internal.util.config.ConfigurationHelper.getPreferredSqlTypeCodeForInstant;
 import static org.hibernate.internal.util.config.ConfigurationHelper.getPreferredSqlTypeCodeForUuid;
@@ -763,9 +765,6 @@ public class MetadataBuildingProcess {
 		// add Dialect contributed types
 		final Dialect dialect = options.getServiceRegistry().requireService( JdbcServices.class ).getDialect();
 		dialect.contribute( typeContributions, options.getServiceRegistry() );
-		// Capture the dialect configured JdbcTypes so that we can detect if a TypeContributor overwrote them,
-		// which has precedence over the fallback and preferred type registrations
-		final JdbcType dialectArrayDescriptor = jdbcTypeRegistry.findDescriptor( SqlTypes.ARRAY );
 
 		// add TypeContributor contributed types.
 		for ( TypeContributor contributor : classLoaderService.loadJavaServices( TypeContributor.class ) ) {
@@ -790,17 +789,23 @@ public class MetadataBuildingProcess {
 			addFallbackIfNecessary( jdbcTypeRegistry, SqlTypes.UUID, SqlTypes.BINARY );
 		}
 
-		final int preferredSqlTypeCodeForArray = getPreferredSqlTypeCodeForArray( serviceRegistry );
+		jdbcTypeRegistry.addDescriptorIfAbsent( JsonAsStringJdbcType.VARCHAR_INSTANCE );
-		if ( preferredSqlTypeCodeForArray != SqlTypes.ARRAY ) {
+		jdbcTypeRegistry.addDescriptorIfAbsent( XmlAsStringJdbcType.VARCHAR_INSTANCE );
-			adaptToPreferredSqlTypeCode(
+		if ( jdbcTypeRegistry.getConstructor( SqlTypes.JSON_ARRAY ) == null ) {
-					jdbcTypeRegistry,
+			if ( jdbcTypeRegistry.getDescriptor( SqlTypes.JSON ).getDdlTypeCode() == SqlTypes.JSON ) {
-					dialectArrayDescriptor,
+				jdbcTypeRegistry.addTypeConstructor( JsonArrayJdbcTypeConstructor.INSTANCE );
-					SqlTypes.ARRAY,
+			}
-					preferredSqlTypeCodeForArray
+			else {
-			);
+				jdbcTypeRegistry.addTypeConstructor( JsonAsStringArrayJdbcTypeConstructor.INSTANCE );
+			}
 		}
-		else {
+		if ( jdbcTypeRegistry.getConstructor( SqlTypes.XML_ARRAY ) == null ) {
-			addFallbackIfNecessary( jdbcTypeRegistry, SqlTypes.ARRAY, SqlTypes.VARBINARY );
+			if ( jdbcTypeRegistry.getDescriptor( SqlTypes.SQLXML ).getDdlTypeCode() == SqlTypes.SQLXML ) {
+				jdbcTypeRegistry.addTypeConstructor( XmlArrayJdbcTypeConstructor.INSTANCE );
+			}
+			else {
+				jdbcTypeRegistry.addTypeConstructor( XmlAsStringArrayJdbcTypeConstructor.INSTANCE );
+			}
 		}
 
 		final int preferredSqlTypeCodeForDuration = getPreferredSqlTypeCodeForDuration( serviceRegistry );
@@ -823,10 +828,6 @@ public class MetadataBuildingProcess {
 		addFallbackIfNecessary( jdbcTypeRegistry, SqlTypes.POINT, SqlTypes.VARBINARY );
 		addFallbackIfNecessary( jdbcTypeRegistry, SqlTypes.GEOGRAPHY, SqlTypes.GEOMETRY );
 
-		jdbcTypeRegistry.addDescriptorIfAbsent( JsonAsStringJdbcType.VARCHAR_INSTANCE );
-		jdbcTypeRegistry.addDescriptorIfAbsent( JsonArrayAsStringJdbcType.VARCHAR_INSTANCE );
-		jdbcTypeRegistry.addDescriptorIfAbsent( XmlAsStringJdbcType.VARCHAR_INSTANCE );
-
 		addFallbackIfNecessary( jdbcTypeRegistry, SqlTypes.MATERIALIZED_BLOB, SqlTypes.BLOB );
 		addFallbackIfNecessary( jdbcTypeRegistry, SqlTypes.MATERIALIZED_CLOB, SqlTypes.CLOB );
 		addFallbackIfNecessary( jdbcTypeRegistry, SqlTypes.MATERIALIZED_NCLOB, SqlTypes.NCLOB );

hibernate-core/src/main/java/org/hibernate/dialect/CockroachDialect.java

@@ -19,6 +19,7 @@ import java.util.TimeZone;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
+import org.checkerframework.checker.nullness.qual.Nullable;
 import org.hibernate.LockMode;
 import org.hibernate.LockOptions;
 import org.hibernate.PessimisticLockException;
@@ -95,7 +96,6 @@ import static org.hibernate.type.SqlTypes.GEOMETRY;
 import static org.hibernate.type.SqlTypes.INET;
 import static org.hibernate.type.SqlTypes.INTEGER;
 import static org.hibernate.type.SqlTypes.JSON;
-import static org.hibernate.type.SqlTypes.JSON_ARRAY;
 import static org.hibernate.type.SqlTypes.LONG32NVARCHAR;
 import static org.hibernate.type.SqlTypes.LONG32VARBINARY;
 import static org.hibernate.type.SqlTypes.LONG32VARCHAR;
@@ -260,7 +260,6 @@ public class CockroachDialect extends Dialect {
 		// Prefer jsonb if possible
 		ddlTypeRegistry.addDescriptor( new DdlTypeImpl( INET, "inet", this ) );
 		ddlTypeRegistry.addDescriptor( new DdlTypeImpl( JSON, "jsonb", this ) );
-		ddlTypeRegistry.addDescriptor( new DdlTypeImpl( JSON_ARRAY, "jsonb", this ) );
 
 		ddlTypeRegistry.addDescriptor( new NamedNativeEnumDdlTypeImpl( this ) );
 		ddlTypeRegistry.addDescriptor( new NamedNativeOrdinalEnumDdlTypeImpl( this ) );
@@ -356,13 +355,13 @@ public class CockroachDialect extends Dialect {
 				jdbcTypeRegistry.addDescriptorIfAbsent( PgJdbcHelper.getIntervalJdbcType( serviceRegistry ) );
 				jdbcTypeRegistry.addDescriptorIfAbsent( PgJdbcHelper.getInetJdbcType( serviceRegistry ) );
 				jdbcTypeRegistry.addDescriptorIfAbsent( PgJdbcHelper.getJsonbJdbcType( serviceRegistry ) );
-				jdbcTypeRegistry.addDescriptorIfAbsent( PgJdbcHelper.getJsonbArrayJdbcType( serviceRegistry ) );
+				jdbcTypeRegistry.addTypeConstructorIfAbsent( PgJdbcHelper.getJsonbArrayJdbcType( serviceRegistry ) );
 			}
 			else {
 				jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingIntervalSecondJdbcType.INSTANCE );
 				jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingInetJdbcType.INSTANCE );
 				jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingJsonJdbcType.JSONB_INSTANCE );
-				jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingJsonArrayJdbcType.JSONB_INSTANCE );
+				jdbcTypeRegistry.addTypeConstructorIfAbsent( PostgreSQLCastingJsonArrayJdbcTypeConstructor.JSONB_INSTANCE );
 			}
 		}
 		else {
@@ -370,7 +369,7 @@ public class CockroachDialect extends Dialect {
 			jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingInetJdbcType.INSTANCE );
 			jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingIntervalSecondJdbcType.INSTANCE );
 			jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingJsonJdbcType.JSONB_INSTANCE );
-			jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingJsonArrayJdbcType.JSONB_INSTANCE );
+			jdbcTypeRegistry.addTypeConstructorIfAbsent( PostgreSQLCastingJsonArrayJdbcTypeConstructor.JSONB_INSTANCE );
 		}
 
 		// Force Blob binding to byte[] for CockroachDB
@@ -391,6 +390,7 @@ public class CockroachDialect extends Dialect {
 				)
 		);
 
+		// Replace the standard array constructor
 		jdbcTypeRegistry.addTypeConstructor( PostgreSQLArrayJdbcTypeConstructor.INSTANCE );
 	}
 
@@ -485,6 +485,8 @@ public class CockroachDialect extends Dialect {
 		functionFactory.jsonArrayAppend_postgresql( false );
 		functionFactory.jsonArrayInsert_postgresql();
 
+		functionFactory.unnest_postgresql();
+
 		// Postgres uses # instead of ^ for XOR
 		functionContributions.getFunctionRegistry().patternDescriptorBuilder( "bitxor", "(?1#?2)" )
 				.setExactArgumentCount( 2 )
@@ -498,6 +500,11 @@ public class CockroachDialect extends Dialect {
 		functionContributions.getFunctionRegistry().registerAlternateKey( "truncate", "trunc" );
 	}
 
+	@Override
+	public @Nullable String getDefaultOrdinalityColumnName() {
+		return "ordinality";
+	}
+
 	@Override
 	public TimeZoneSupport getTimeZoneSupport() {
 		return TimeZoneSupport.NORMALIZE;

hibernate-core/src/main/java/org/hibernate/dialect/DB2Dialect.java

@@ -78,6 +78,7 @@ import org.hibernate.tool.schema.extract.internal.SequenceInformationExtractorDB
 import org.hibernate.tool.schema.extract.internal.SequenceInformationExtractorNoOpImpl;
 import org.hibernate.tool.schema.extract.spi.SequenceInformationExtractor;
 import org.hibernate.type.JavaObjectType;
+import org.hibernate.type.SqlTypes;
 import org.hibernate.type.StandardBasicTypes;
 import org.hibernate.type.descriptor.ValueExtractor;
 import org.hibernate.type.descriptor.java.JavaType;
@@ -440,6 +441,14 @@ public class DB2Dialect extends Dialect {
 			functionFactory.xmlexists_db2_legacy();
 		}
 		functionFactory.xmlagg();
+
+		functionFactory.unnest_emulated();
+	}
+
+	@Override
+	public int getPreferredSqlTypeCodeForArray() {
+		// Even if DB2 11 supports JSON functions, it's not possible to unnest a JSON array to rows, so stick to XML
+		return SqlTypes.XML_ARRAY;
 	}
 
 	@Override

hibernate-core/src/main/java/org/hibernate/dialect/DB2SqlAstTranslator.java

@@ -9,8 +9,11 @@ import java.util.function.Consumer;
 
 import org.hibernate.LockMode;
 import org.hibernate.engine.spi.SessionFactoryImplementor;
+import org.hibernate.metamodel.mapping.CollectionPart;
 import org.hibernate.metamodel.mapping.JdbcMappingContainer;
+import org.hibernate.metamodel.mapping.ModelPart;
 import org.hibernate.query.IllegalQueryOperationException;
+import org.hibernate.query.derived.AnonymousTupleTableGroupProducer;
 import org.hibernate.query.sqm.ComparisonOperator;
 import org.hibernate.query.sqm.FetchClauseType;
 import org.hibernate.sql.ast.Clause;
@@ -18,6 +21,7 @@ import org.hibernate.sql.ast.SqlAstNodeRenderingMode;
 import org.hibernate.sql.ast.spi.AbstractSqlAstTranslator;
 import org.hibernate.sql.ast.spi.SqlSelection;
 import org.hibernate.sql.ast.tree.MutationStatement;
+import org.hibernate.sql.ast.tree.SqlAstNode;
 import org.hibernate.sql.ast.tree.Statement;
 import org.hibernate.sql.ast.tree.delete.DeleteStatement;
 import org.hibernate.sql.ast.tree.expression.CaseSearchedExpression;
@@ -26,6 +30,8 @@ import org.hibernate.sql.ast.tree.expression.ColumnReference;
 import org.hibernate.sql.ast.tree.expression.Expression;
 import org.hibernate.sql.ast.tree.expression.Literal;
 import org.hibernate.sql.ast.tree.expression.SqlTuple;
+import org.hibernate.sql.ast.tree.from.DerivedTableReference;
+import org.hibernate.sql.ast.tree.from.FunctionTableReference;
 import org.hibernate.sql.ast.tree.from.NamedTableReference;
 import org.hibernate.sql.ast.tree.from.QueryPartTableReference;
 import org.hibernate.sql.ast.tree.from.TableGroup;
@@ -252,6 +258,34 @@ public class DB2SqlAstTranslator<T extends JdbcOperation> extends AbstractSqlAst
 		inLateral = oldLateral;
 	}
 
+	@Override
+	protected void renderDerivedTableReference(DerivedTableReference tableReference) {
+		if ( tableReference instanceof FunctionTableReference && tableReference.isLateral() ) {
+			// No need for a lateral keyword for functions
+			tableReference.accept( this );
+		}
+		else {
+			super.renderDerivedTableReference( tableReference );
+		}
+	}
+
+	@Override
+	public void renderNamedSetReturningFunction(String functionName, List<? extends SqlAstNode> sqlAstArguments, AnonymousTupleTableGroupProducer tupleType, String tableIdentifierVariable, SqlAstNodeRenderingMode argumentRenderingMode) {
+		final ModelPart ordinalitySubPart = tupleType.findSubPart( CollectionPart.Nature.INDEX.getName(), null );
+		if ( ordinalitySubPart != null ) {
+			appendSql( "lateral (select t.*, row_number() over() " );
+			appendSql( ordinalitySubPart.asBasicValuedModelPart().getSelectionExpression() );
+			appendSql( " from table(" );
+			renderSimpleNamedFunction( functionName, sqlAstArguments, argumentRenderingMode );
+			append( ") t)" );
+		}
+		else {
+			appendSql( "table(" );
+			super.renderNamedSetReturningFunction( functionName, sqlAstArguments, tupleType, tableIdentifierVariable, argumentRenderingMode );
+			append( ')' );
+		}
+	}
+
 	@Override
 	public void visitSelectStatement(SelectStatement statement) {
 		if ( getQueryPartForRowNumbering() == statement.getQueryPart() && inLateral ) {

hibernate-core/src/main/java/org/hibernate/dialect/DB2StructJdbcType.java

@@ -63,6 +63,11 @@ public class DB2StructJdbcType implements StructJdbcType {
 		return SqlTypes.SQLXML;
 	}
 
+	@Override
+	public int getDdlTypeCode() {
+		return SqlTypes.SQLXML;
+	}
+
 	@Override
 	public int getDefaultSqlTypeCode() {
 		return SqlTypes.STRUCT;

hibernate-core/src/main/java/org/hibernate/dialect/DB2zSqlAstTranslator.java

@@ -4,15 +4,11 @@
  */
 package org.hibernate.dialect;
 
-import org.hibernate.LockMode;
 import org.hibernate.engine.spi.SessionFactoryImplementor;
 import org.hibernate.query.sqm.ComparisonOperator;
 import org.hibernate.sql.ast.tree.Statement;
 import org.hibernate.sql.ast.tree.expression.Expression;
-import org.hibernate.sql.ast.tree.from.FunctionTableReference;
+import org.hibernate.sql.ast.tree.from.QueryPartTableReference;
-import org.hibernate.sql.ast.tree.from.NamedTableReference;
-import org.hibernate.sql.ast.tree.from.TableGroup;
-import org.hibernate.sql.ast.tree.from.TableReference;
 import org.hibernate.sql.ast.tree.select.QueryPart;
 import org.hibernate.sql.exec.spi.JdbcOperation;
 
@@ -51,28 +47,10 @@ public class DB2zSqlAstTranslator<T extends JdbcOperation> extends DB2SqlAstTran
 	}
 
 	@Override
-	protected boolean renderPrimaryTableReference(TableGroup tableGroup, LockMode lockMode) {
+	public void visitQueryPartTableReference(QueryPartTableReference tableReference) {
-		if ( shouldInlineCte( tableGroup ) ) {
-			inlineCteTableGroup( tableGroup, lockMode );
-			return false;
-		}
-		final TableReference tableReference = tableGroup.getPrimaryTableReference();
-		if ( tableReference instanceof NamedTableReference ) {
-			return renderNamedTableReference( (NamedTableReference) tableReference, lockMode );
-		}
 		// DB2 z/OS we need the "table" qualifier for table valued functions or lateral sub-queries
 		append( "table " );
-		tableReference.accept( this );
+		super.visitQueryPartTableReference( tableReference );
-		return false;
-	}
-
-	@Override
-	public void visitFunctionTableReference(FunctionTableReference tableReference) {
-		// For the table qualifier we need parenthesis on DB2 z/OS
-		append( OPEN_PARENTHESIS );
-		tableReference.getFunctionExpression().accept( this );
-		append( CLOSE_PARENTHESIS );
-		renderDerivedTableReference( tableReference );
 	}
 
 	@Override

hibernate-core/src/main/java/org/hibernate/dialect/Dialect.java

@@ -1871,7 +1871,7 @@ public abstract class Dialect implements ConversionContext, TypeContributor, Fun
 		}
 
 		if ( supportsStandardArrays() ) {
-			jdbcTypeRegistry.addTypeConstructor( ArrayJdbcTypeConstructor.INSTANCE );
+			jdbcTypeRegistry.addTypeConstructorIfAbsent( ArrayJdbcTypeConstructor.INSTANCE );
 		}
 		if ( supportsMaterializedLobAccess() ) {
 			jdbcTypeRegistry.addDescriptor( SqlTypes.MATERIALIZED_BLOB, BlobJdbcType.MATERIALIZED );
@@ -5290,6 +5290,14 @@ public abstract class Dialect implements ConversionContext, TypeContributor, Fun
 		return null;
 	}
 
+	/**
+	 * Returns the default name of the ordinality column for a set-returning function
+	 * if it supports that, otherwise returns {@code null}.
+	 */
+	public @Nullable String getDefaultOrdinalityColumnName() {
+		return null;
+	}
+
 	/**
 	 * Pluggable strategy for determining the {@link Size} to use for
 	 * columns of a given SQL type.

hibernate-core/src/main/java/org/hibernate/dialect/H2Dialect.java

@@ -14,6 +14,7 @@ import java.util.Date;
 import java.util.List;
 import java.util.TimeZone;
 
+import org.checkerframework.checker.nullness.qual.Nullable;
 import org.hibernate.PessimisticLockException;
 import org.hibernate.QueryTimeoutException;
 import org.hibernate.boot.model.FunctionContributions;
@@ -89,7 +90,6 @@ import static org.hibernate.type.SqlTypes.FLOAT;
 import static org.hibernate.type.SqlTypes.GEOMETRY;
 import static org.hibernate.type.SqlTypes.INTERVAL_SECOND;
 import static org.hibernate.type.SqlTypes.JSON;
-import static org.hibernate.type.SqlTypes.JSON_ARRAY;
 import static org.hibernate.type.SqlTypes.LONG32NVARCHAR;
 import static org.hibernate.type.SqlTypes.LONG32VARBINARY;
 import static org.hibernate.type.SqlTypes.LONG32VARCHAR;
@@ -229,7 +229,6 @@ public class H2Dialect extends Dialect {
 		ddlTypeRegistry.addDescriptor( new DdlTypeImpl( GEOMETRY, "geometry", this ) );
 		ddlTypeRegistry.addDescriptor( new DdlTypeImpl( INTERVAL_SECOND, "interval second($p,$s)", this ) );
 		ddlTypeRegistry.addDescriptor( new DdlTypeImpl( JSON, "json", this ) );
-		ddlTypeRegistry.addDescriptor( new DdlTypeImpl( JSON_ARRAY, "json", this ) );
 		ddlTypeRegistry.addDescriptor( new NativeEnumDdlTypeImpl( this ) );
 		ddlTypeRegistry.addDescriptor( new NativeOrdinalEnumDdlTypeImpl( this ) );
 	}
@@ -246,7 +245,8 @@ public class H2Dialect extends Dialect {
 		jdbcTypeRegistry.addDescriptorIfAbsent( UUIDJdbcType.INSTANCE );
 		jdbcTypeRegistry.addDescriptorIfAbsent( H2DurationIntervalSecondJdbcType.INSTANCE );
 		jdbcTypeRegistry.addDescriptorIfAbsent( H2JsonJdbcType.INSTANCE );
-		jdbcTypeRegistry.addDescriptorIfAbsent( H2JsonArrayJdbcType.INSTANCE );
+		// Replace the standard array constructor
+		jdbcTypeRegistry.addTypeConstructor( H2JsonArrayJdbcTypeConstructor.INSTANCE );
 		jdbcTypeRegistry.addDescriptor( EnumJdbcType.INSTANCE );
 		jdbcTypeRegistry.addDescriptor( OrdinalEnumJdbcType.INSTANCE );
 	}
@@ -358,6 +358,8 @@ public class H2Dialect extends Dialect {
 		functionFactory.xmlforest_h2();
 		functionFactory.xmlconcat_h2();
 		functionFactory.xmlpi_h2();
+
+		functionFactory.unnest_h2( getMaximumArraySize() );
 	}
 
 	/**
@@ -370,6 +372,11 @@ public class H2Dialect extends Dialect {
 		return 1000;
 	}
 
+	@Override
+	public @Nullable String getDefaultOrdinalityColumnName() {
+		return "nord";
+	}
+
 	@Override
 	public void augmentPhysicalTableTypes(List<String> tableTypesList) {
 		tableTypesList.add( "BASE TABLE" );

hibernate-core/src/main/java/org/hibernate/dialect/H2JsonArrayJdbcType.java

@@ -13,18 +13,16 @@ import org.hibernate.type.descriptor.ValueBinder;
 import org.hibernate.type.descriptor.WrapperOptions;
 import org.hibernate.type.descriptor.java.JavaType;
 import org.hibernate.type.descriptor.jdbc.BasicBinder;
+import org.hibernate.type.descriptor.jdbc.JdbcType;
 import org.hibernate.type.descriptor.jdbc.JsonArrayJdbcType;
 
 /**
  * H2 requires binding JSON via {@code setBytes} methods.
  */
 public class H2JsonArrayJdbcType extends JsonArrayJdbcType {
-	/**
-	 * Singleton access
-	 */
-	public static final H2JsonArrayJdbcType INSTANCE = new H2JsonArrayJdbcType();
 
-	protected H2JsonArrayJdbcType() {
+	public H2JsonArrayJdbcType(JdbcType elementJdbcType) {
+		super( elementJdbcType );
 	}
 
 	@Override

hibernate-core/src/main/java/org/hibernate/dialect/H2JsonArrayJdbcTypeConstructor.java

@@ -0,0 +1,43 @@
+/*
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.dialect;
+
+import org.hibernate.tool.schema.extract.spi.ColumnTypeInformation;
+import org.hibernate.type.BasicType;
+import org.hibernate.type.SqlTypes;
+import org.hibernate.type.descriptor.jdbc.JdbcType;
+import org.hibernate.type.descriptor.jdbc.JdbcTypeConstructor;
+import org.hibernate.type.spi.TypeConfiguration;
+
+/**
+ * Factory for {@link H2JsonArrayJdbcType}.
+ */
+public class H2JsonArrayJdbcTypeConstructor implements JdbcTypeConstructor {
+
+	public static final H2JsonArrayJdbcTypeConstructor INSTANCE = new H2JsonArrayJdbcTypeConstructor();
+
+	@Override
+	public JdbcType resolveType(
+			TypeConfiguration typeConfiguration,
+			Dialect dialect,
+			BasicType<?> elementType,
+			ColumnTypeInformation columnTypeInformation) {
+		return resolveType( typeConfiguration, dialect, elementType.getJdbcType(), columnTypeInformation );
+	}
+
+	@Override
+	public JdbcType resolveType(
+			TypeConfiguration typeConfiguration,
+			Dialect dialect,
+			JdbcType elementType,
+			ColumnTypeInformation columnTypeInformation) {
+		return new H2JsonArrayJdbcType( elementType );
+	}
+
+	@Override
+	public int getDefaultSqlTypeCode() {
+		return SqlTypes.JSON_ARRAY;
+	}
+}

hibernate-core/src/main/java/org/hibernate/dialect/HANADialect.java

@@ -66,6 +66,7 @@ import org.hibernate.tool.schema.extract.internal.SequenceInformationExtractorHA
 import org.hibernate.tool.schema.extract.spi.SequenceInformationExtractor;
 import org.hibernate.tool.schema.internal.StandardTableExporter;
 import org.hibernate.tool.schema.spi.Exporter;
+import org.hibernate.type.SqlTypes;
 import org.hibernate.type.StandardBasicTypes;
 import org.hibernate.type.descriptor.ValueBinder;
 import org.hibernate.type.descriptor.ValueExtractor;
@@ -413,6 +414,12 @@ public class HANADialect extends Dialect {
 		return 5000;
 	}
 
+	@Override
+	public int getPreferredSqlTypeCodeForArray() {
+		// Prefer XML since JSON was only added later
+		return getVersion().isSameOrAfter( 2 ) ? SqlTypes.XML_ARRAY : super.getPreferredSqlTypeCodeForArray();
+	}
+
 	@Override
 	public void initializeFunctionRegistry(FunctionContributions functionContributions) {
 		super.initializeFunctionRegistry(functionContributions);
@@ -490,15 +497,23 @@ public class HANADialect extends Dialect {
 				typeConfiguration
 		);
 
-		// Introduced in 2.0 SPS 02
+			// Introduced in 2.0 SPS 00
-		functionFactory.jsonValue_no_passing();
+			functionFactory.jsonValue_no_passing();
-		functionFactory.jsonQuery_no_passing();
+			functionFactory.jsonQuery_no_passing();
-		functionFactory.jsonExists_hana();
+			functionFactory.jsonExists_hana();
-		// Introduced in 2.0 SPS 04
+
-		functionFactory.jsonObject_hana();
+			functionFactory.unnest_hana();
-		functionFactory.jsonArray_hana();
+//			functionFactory.json_table();
-		functionFactory.jsonArrayAgg_hana();
+
-		functionFactory.jsonObjectAgg_hana();
+			// Introduced in 2.0 SPS 04
+			functionFactory.jsonObject_hana();
+			functionFactory.jsonArray_hana();
+			functionFactory.jsonArrayAgg_hana();
+			functionFactory.jsonObjectAgg_hana();
+
+//			functionFactory.xmltable();
+
+//			functionFactory.xmlextract();
 	}
 
 	@Override

hibernate-core/src/main/java/org/hibernate/dialect/HANASqlAstTranslator.java

@@ -9,17 +9,22 @@ import java.util.List;
 import org.hibernate.MappingException;
 import org.hibernate.engine.spi.SessionFactoryImplementor;
 import org.hibernate.internal.util.collections.Stack;
+import org.hibernate.metamodel.mapping.CollectionPart;
+import org.hibernate.metamodel.mapping.ModelPart;
 import org.hibernate.query.IllegalQueryOperationException;
+import org.hibernate.query.derived.AnonymousTupleTableGroupProducer;
 import org.hibernate.query.sqm.ComparisonOperator;
 import org.hibernate.sql.ast.Clause;
 import org.hibernate.sql.ast.SqlAstNodeRenderingMode;
 import org.hibernate.sql.ast.spi.AbstractSqlAstTranslator;
+import org.hibernate.sql.ast.tree.SqlAstNode;
 import org.hibernate.sql.ast.tree.Statement;
 import org.hibernate.sql.ast.tree.cte.CteStatement;
 import org.hibernate.sql.ast.tree.expression.BinaryArithmeticExpression;
 import org.hibernate.sql.ast.tree.expression.Expression;
 import org.hibernate.sql.ast.tree.expression.Literal;
 import org.hibernate.sql.ast.tree.expression.Summarization;
+import org.hibernate.sql.ast.tree.from.DerivedTableReference;
 import org.hibernate.sql.ast.tree.from.FunctionTableReference;
 import org.hibernate.sql.ast.tree.from.NamedTableReference;
 import org.hibernate.sql.ast.tree.from.QueryPartTableReference;
@@ -34,6 +39,8 @@ import org.hibernate.sql.ast.tree.update.UpdateStatement;
 import org.hibernate.sql.exec.spi.JdbcOperation;
 import org.hibernate.sql.model.internal.TableInsertStandard;
 
+import static org.hibernate.dialect.SybaseASESqlAstTranslator.isLob;
+
 /**
  * An SQL AST translator for HANA.
  *
@@ -193,6 +200,32 @@ public class HANASqlAstTranslator<T extends JdbcOperation> extends AbstractSqlAs
 		}
 	}
 
+	@Override
+	protected void renderDerivedTableReference(DerivedTableReference tableReference) {
+		if ( tableReference instanceof FunctionTableReference && tableReference.isLateral() ) {
+			// No need for a lateral keyword for functions
+			tableReference.accept( this );
+		}
+		else {
+			super.renderDerivedTableReference( tableReference );
+		}
+	}
+
+	@Override
+	public void renderNamedSetReturningFunction(String functionName, List<? extends SqlAstNode> sqlAstArguments, AnonymousTupleTableGroupProducer tupleType, String tableIdentifierVariable, SqlAstNodeRenderingMode argumentRenderingMode) {
+		final ModelPart ordinalitySubPart = tupleType.findSubPart( CollectionPart.Nature.INDEX.getName(), null );
+		if ( ordinalitySubPart != null ) {
+			appendSql( "(select t.*, row_number() over() " );
+			appendSql( ordinalitySubPart.asBasicValuedModelPart().getSelectionExpression() );
+			appendSql( " from " );
+			renderSimpleNamedFunction( functionName, sqlAstArguments, argumentRenderingMode );
+			append( " t)" );
+		}
+		else {
+			super.renderNamedSetReturningFunction( functionName, sqlAstArguments, tupleType, tableIdentifierVariable, argumentRenderingMode );
+		}
+	}
+
 	@Override
 	protected SqlAstNodeRenderingMode getParameterRenderingMode() {
 		// HANA does not support parameters in lateral subqueries for some reason, so inline all the parameters in this case
@@ -200,8 +233,7 @@ public class HANASqlAstTranslator<T extends JdbcOperation> extends AbstractSqlAs
 	}
 
 	@Override
-	public void visitFunctionTableReference(FunctionTableReference tableReference) {
+	protected void renderDerivedTableReferenceIdentificationVariable(DerivedTableReference tableReference) {
-		tableReference.getFunctionExpression().accept( this );
 		renderTableReferenceIdentificationVariable( tableReference );
 	}
 
@@ -214,7 +246,38 @@ public class HANASqlAstTranslator<T extends JdbcOperation> extends AbstractSqlAs
 
 	@Override
 	protected void renderComparison(Expression lhs, ComparisonOperator operator, Expression rhs) {
+		// In SAP HANA, LOBs are not "comparable", so we have to use a like predicate for comparison
+		final boolean isLob = isLob( lhs.getExpressionType() );
 		if ( operator == ComparisonOperator.DISTINCT_FROM || operator == ComparisonOperator.NOT_DISTINCT_FROM ) {
+			if ( isLob ) {
+				switch ( operator ) {
+					case DISTINCT_FROM:
+						appendSql( "case when " );
+						lhs.accept( this );
+						appendSql( " like " );
+						rhs.accept( this );
+						appendSql( " or " );
+						lhs.accept( this );
+						appendSql( " is null and " );
+						rhs.accept( this );
+						appendSql( " is null then 0 else 1 end=1" );
+						return;
+					case NOT_DISTINCT_FROM:
+						appendSql( "case when " );
+						lhs.accept( this );
+						appendSql( " like " );
+						rhs.accept( this );
+						appendSql( " or " );
+						lhs.accept( this );
+						appendSql( " is null and " );
+						rhs.accept( this );
+						appendSql( " is null then 0 else 1 end=0" );
+						return;
+					default:
+						// Fall through
+						break;
+				}
+			}
 			// HANA does not support plain parameters in the select clause of the intersect emulation
 			withParameterRenderingMode(
 					SqlAstNodeRenderingMode.NO_PLAIN_PARAMETER,
@@ -222,7 +285,24 @@ public class HANASqlAstTranslator<T extends JdbcOperation> extends AbstractSqlAs
 			);
 		}
 		else {
-			renderComparisonEmulateIntersect( lhs, operator, rhs );
+			if ( isLob ) {
+				switch ( operator ) {
+					case EQUAL:
+						lhs.accept( this );
+						appendSql( " like " );
+						rhs.accept( this );
+						return;
+					case NOT_EQUAL:
+						lhs.accept( this );
+						appendSql( " not like " );
+						rhs.accept( this );
+						return;
+					default:
+						// Fall through
+						break;
+				}
+			}
+			renderComparisonStandard( lhs, operator, rhs );
 		}
 	}
 

hibernate-core/src/main/java/org/hibernate/dialect/HSQLDialect.java

@@ -8,6 +8,7 @@ import java.sql.DatabaseMetaData;
 import java.sql.SQLException;
 import java.sql.Types;
 
+import org.checkerframework.checker.nullness.qual.Nullable;
 import org.hibernate.boot.model.FunctionContributions;
 import org.hibernate.dialect.function.CommonFunctionFactory;
 import org.hibernate.dialect.function.TrimFunction;
@@ -212,6 +213,8 @@ public class HSQLDialect extends Dialect {
 			functionFactory.jsonObjectAgg_h2();
 		}
 
+		functionFactory.unnest( "c1", "c2" );
+
 		//trim() requires parameters to be cast when used as trim character
 		functionContributions.getFunctionRegistry().register( "trim", new TrimFunction(
 				this,
@@ -220,6 +223,11 @@ public class HSQLDialect extends Dialect {
 		) );
 	}
 
+	@Override
+	public @Nullable String getDefaultOrdinalityColumnName() {
+		return "c2";
+	}
+
 	@Override
 	public String currentTime() {
 		return "localtime";

hibernate-core/src/main/java/org/hibernate/dialect/HSQLSqlAstTranslator.java

@@ -22,6 +22,8 @@ import org.hibernate.sql.ast.tree.expression.Expression;
 import org.hibernate.sql.ast.tree.expression.Literal;
 import org.hibernate.sql.ast.tree.expression.SqlTuple;
 import org.hibernate.sql.ast.tree.expression.Summarization;
+import org.hibernate.sql.ast.tree.from.DerivedTableReference;
+import org.hibernate.sql.ast.tree.from.FunctionTableReference;
 import org.hibernate.sql.ast.tree.from.NamedTableReference;
 import org.hibernate.sql.ast.tree.insert.ConflictClause;
 import org.hibernate.sql.ast.tree.insert.InsertSelectStatement;
@@ -72,6 +74,17 @@ public class HSQLSqlAstTranslator<T extends JdbcOperation> extends AbstractSqlAs
 		}
 	}
 
+	@Override
+	protected void renderDerivedTableReference(DerivedTableReference tableReference) {
+		if ( tableReference instanceof FunctionTableReference && tableReference.isLateral() ) {
+			// No need for a lateral keyword for functions
+			tableReference.accept( this );
+		}
+		else {
+			super.renderDerivedTableReference( tableReference );
+		}
+	}
+
 	@Override
 	protected void visitConflictClause(ConflictClause conflictClause) {
 		if ( conflictClause != null ) {

hibernate-core/src/main/java/org/hibernate/dialect/JsonHelper.java

@@ -31,6 +31,8 @@ import org.hibernate.type.BasicPluralType;
 import org.hibernate.type.BasicType;
 import org.hibernate.type.SqlTypes;
 import org.hibernate.type.descriptor.WrapperOptions;
+import org.hibernate.type.descriptor.java.BasicPluralJavaType;
+import org.hibernate.type.descriptor.java.EnumJavaType;
 import org.hibernate.type.descriptor.java.JavaType;
 import org.hibernate.type.descriptor.java.JdbcDateJavaType;
 import org.hibernate.type.descriptor.java.JdbcTimeJavaType;
@@ -38,6 +40,9 @@ import org.hibernate.type.descriptor.java.JdbcTimestampJavaType;
 import org.hibernate.type.descriptor.java.OffsetDateTimeJavaType;
 import org.hibernate.type.descriptor.java.PrimitiveByteArrayJavaType;
 import org.hibernate.type.descriptor.jdbc.AggregateJdbcType;
+import org.hibernate.type.descriptor.jdbc.ArrayJdbcType;
+import org.hibernate.type.descriptor.jdbc.JdbcType;
+import org.hibernate.type.descriptor.jdbc.JsonArrayJdbcType;
 
 import static org.hibernate.dialect.StructHelper.getEmbeddedPart;
 import static org.hibernate.dialect.StructHelper.instantiate;
@@ -57,6 +62,43 @@ public class JsonHelper {
 		return sb.toString();
 	}
 
+	public static String arrayToString(MappingType elementMappingType, Object[] values, WrapperOptions options) {
+		if ( values.length == 0 ) {
+			return "[]";
+		}
+		final StringBuilder sb = new StringBuilder();
+		final JsonAppender jsonAppender = new JsonAppender( sb );
+		char separator = '[';
+		for ( Object value : values ) {
+			sb.append( separator );
+			toString( elementMappingType, value, options, jsonAppender );
+			separator = ',';
+		}
+		sb.append( ']' );
+		return sb.toString();
+	}
+
+	public static String arrayToString(
+			JavaType<?> elementJavaType,
+			JdbcType elementJdbcType,
+			Object[] values,
+			WrapperOptions options) {
+		if ( values.length == 0 ) {
+			return "[]";
+		}
+		final StringBuilder sb = new StringBuilder();
+		final JsonAppender jsonAppender = new JsonAppender( sb );
+		char separator = '[';
+		for ( Object value : values ) {
+			sb.append( separator );
+			//noinspection unchecked
+			convertedValueToString( (JavaType<Object>) elementJavaType, elementJdbcType, value, options, jsonAppender );
+			separator = ',';
+		}
+		sb.append( ']' );
+		return sb.toString();
+	}
+
 	private static void toString(EmbeddableMappingType embeddableMappingType, Object value, WrapperOptions options, JsonAppender appender) {
 		toString( embeddableMappingType, options, appender, value, '{' );
 		appender.append( '}' );
@@ -130,34 +172,45 @@ public class JsonHelper {
 	}
 
 	private static void convertedValueToString(
-			MappingType mappedType,
+			JavaType<Object> javaType,
+			JdbcType jdbcType,
 			Object value,
 			WrapperOptions options,
 			JsonAppender appender) {
 		if ( value == null ) {
 			appender.append( "null" );
 		}
-		else if ( mappedType instanceof EmbeddableMappingType ) {
+		else if ( jdbcType instanceof AggregateJdbcType aggregateJdbcType ) {
-			toString( (EmbeddableMappingType) mappedType, value, options, appender );
+			toString( aggregateJdbcType.getEmbeddableMappingType(), value, options, appender );
-		}
-		else if ( mappedType instanceof BasicType<?> ) {
-			//noinspection unchecked
-			final BasicType<Object> basicType = (BasicType<Object>) mappedType;
-			convertedBasicValueToString( value, options, appender, basicType );
 		}
 		else {
-			throw new UnsupportedOperationException( "Support for mapping type not yet implemented: " + mappedType.getClass().getName() );
+			convertedBasicValueToString( value, options, appender, javaType, jdbcType );
 		}
 	}
 
+
 	private static void convertedBasicValueToString(
 			Object value,
 			WrapperOptions options,
 			JsonAppender appender,
 			BasicType<Object> basicType) {
 		//noinspection unchecked
-		final JavaType<Object> javaType = (JavaType<Object>) basicType.getJdbcJavaType();
+		convertedBasicValueToString(
-		switch ( basicType.getJdbcType().getDefaultSqlTypeCode() ) {
+				value,
+				options,
+				appender,
+				(JavaType<Object>) basicType.getJdbcJavaType(),
+				basicType.getJdbcType()
+		);
+	}
+
+	private static void convertedBasicValueToString(
+			Object value,
+			WrapperOptions options,
+			JsonAppender appender,
+			JavaType<Object> javaType,
+			JdbcType jdbcType) {
+		switch ( jdbcType.getDefaultSqlTypeCode() ) {
 			case SqlTypes.TINYINT:
 			case SqlTypes.SMALLINT:
 			case SqlTypes.INTEGER:
@@ -272,19 +325,21 @@ public class JsonHelper {
 				final int length = Array.getLength( value );
 				appender.append( '[' );
 				if ( length != 0 ) {
-					final BasicType<Object> elementType = ( (BasicPluralType<?, Object>) basicType ).getElementType();
+					//noinspection unchecked
+					final JavaType<Object> elementJavaType = ( (BasicPluralJavaType<Object>) javaType ).getElementJavaType();
+					final JdbcType elementJdbcType = ( (ArrayJdbcType) jdbcType ).getElementJdbcType();
 					Object arrayElement = Array.get( value, 0 );
-					convertedValueToString( elementType, arrayElement, options, appender );
+					convertedValueToString( elementJavaType, elementJdbcType, arrayElement, options, appender );
 					for ( int i = 1; i < length; i++ ) {
 						arrayElement = Array.get( value, i );
 						appender.append( ',' );
-						convertedValueToString( elementType, arrayElement, options, appender );
+						convertedValueToString( elementJavaType, elementJdbcType, arrayElement, options, appender );
 					}
 				}
 				appender.append( ']' );
 				break;
 			default:
-				throw new UnsupportedOperationException( "Unsupported JdbcType nested in JSON: " + basicType.getJdbcType() );
+				throw new UnsupportedOperationException( "Unsupported JdbcType nested in JSON: " + jdbcType );
 		}
 	}
 
@@ -314,6 +369,39 @@ public class JsonHelper {
 		return (X) values;
 	}
 
+	public static <X> X arrayFromString(
+			JavaType<X> javaType,
+			JsonArrayJdbcType jsonArrayJdbcType,
+			String string,
+			WrapperOptions options) throws SQLException {
+		if ( string == null ) {
+			return null;
+		}
+		final JavaType<?> elementJavaType = ((BasicPluralJavaType<?>) javaType).getElementJavaType();
+		final Class<?> preferredJavaTypeClass = jsonArrayJdbcType.getElementJdbcType().getPreferredJavaTypeClass( options );
+		final JavaType<?> jdbcJavaType;
+		if ( preferredJavaTypeClass == null || preferredJavaTypeClass == elementJavaType.getJavaTypeClass() ) {
+			jdbcJavaType = elementJavaType;
+		}
+		else {
+			jdbcJavaType = options.getSessionFactory().getTypeConfiguration().getJavaTypeRegistry()
+					.resolveDescriptor( preferredJavaTypeClass );
+		}
+		final CustomArrayList arrayList = new CustomArrayList();
+		final int i = fromArrayString(
+				string,
+				false,
+				options,
+				0,
+				arrayList,
+				elementJavaType,
+				jdbcJavaType,
+				jsonArrayJdbcType.getElementJdbcType()
+		);
+		assert string.charAt( i - 1 ) == ']';
+		return javaType.wrap( arrayList, options );
+	}
+
 	private static int fromString(
 			EmbeddableMappingType embeddableMappingType,
 			String string,
@@ -559,7 +647,30 @@ public class JsonHelper {
 			int begin,
 			CustomArrayList arrayList,
 			BasicType<?> elementType) throws SQLException {
+		return fromArrayString(
+				string,
+				returnEmbeddable,
+				options,
+				begin,
+				arrayList,
+				elementType.getMappedJavaType(),
+				elementType.getJdbcJavaType(),
+				elementType.getJdbcType()
+		);
+	}
 
+	private static int fromArrayString(
+			String string,
+			boolean returnEmbeddable,
+			WrapperOptions options,
+			int begin,
+			CustomArrayList arrayList,
+			JavaType<?> javaType,
+			JavaType<?> jdbcJavaType,
+			JdbcType jdbcType) throws SQLException {
+		if ( string.length() == begin + 2 ) {
+			return begin + 2;
+		}
 		boolean hasEscape = false;
 		assert string.charAt( begin ) == '[';
 		int start = begin + 1;
@@ -586,7 +697,9 @@ public class JsonHelper {
 							s = State.VALUE_END;
 							arrayList.add(
 									fromString(
-											elementType,
+											javaType,
+											jdbcJavaType,
+											jdbcType,
 											string,
 											start,
 											i,
@@ -693,7 +806,9 @@ public class JsonHelper {
 									string,
 									i,
 									arrayList.getUnderlyingArray(),
-									elementType,
+									javaType,
+									jdbcJavaType,
+									jdbcType,
 									elementIndex,
 									returnEmbeddable,
 									options
@@ -728,6 +843,29 @@ public class JsonHelper {
 			int selectableIndex,
 			boolean returnEmbeddable,
 			WrapperOptions options) throws SQLException {
+		return consumeLiteral(
+				string,
+				start,
+				values,
+				jdbcMapping.getMappedJavaType(),
+				jdbcMapping.getJdbcJavaType(),
+				jdbcMapping.getJdbcType(),
+				selectableIndex,
+				returnEmbeddable,
+				options
+		);
+	}
+
+	private static int consumeLiteral(
+			String string,
+			int start,
+			Object[] values,
+			JavaType<?> javaType,
+			JavaType<?> jdbcJavaType,
+			JdbcType jdbcType,
+			int selectableIndex,
+			boolean returnEmbeddable,
+			WrapperOptions options) throws SQLException {
 		final char c = string.charAt( start );
 		switch ( c ) {
 			case 'n':
@@ -750,7 +888,9 @@ public class JsonHelper {
 								start,
 								start + 1,
 								values,
-								jdbcMapping,
+								javaType,
+								jdbcJavaType,
+								jdbcType,
 								selectableIndex,
 								returnEmbeddable,
 								options
@@ -762,14 +902,18 @@ public class JsonHelper {
 								start,
 								start + 1,
 								values,
-								jdbcMapping,
+								javaType,
+								jdbcJavaType,
+								jdbcType,
 								selectableIndex,
 								returnEmbeddable,
 								options
 						);
 				}
 				values[selectableIndex] = fromString(
-						jdbcMapping,
+						javaType,
+						jdbcJavaType,
+						jdbcType,
 						string,
 						start,
 						start + 1,
@@ -806,7 +950,9 @@ public class JsonHelper {
 									start,
 									i,
 									values,
-									jdbcMapping,
+									javaType,
+									jdbcJavaType,
+									jdbcType,
 									selectableIndex,
 									returnEmbeddable,
 									options
@@ -818,7 +964,9 @@ public class JsonHelper {
 									start,
 									i,
 									values,
-									jdbcMapping,
+									javaType,
+									jdbcJavaType,
+									jdbcType,
 									selectableIndex,
 									returnEmbeddable,
 									options
@@ -836,7 +984,9 @@ public class JsonHelper {
 							break;
 						default:
 							values[selectableIndex] = fromString(
-									jdbcMapping,
+									javaType,
+									jdbcJavaType,
+									jdbcType,
 									string,
 									start,
 									i,
@@ -856,7 +1006,9 @@ public class JsonHelper {
 			int start,
 			int dotIndex,
 			Object[] values,
-			JdbcMapping jdbcMapping,
+			JavaType<?> javaType,
+			JavaType<?> jdbcJavaType,
+			JdbcType jdbcType,
 			int selectableIndex,
 			boolean returnEmbeddable,
 			WrapperOptions options) throws SQLException {
@@ -870,7 +1022,9 @@ public class JsonHelper {
 							start,
 							i,
 							values,
-							jdbcMapping,
+							javaType,
+							jdbcJavaType,
+							jdbcType,
 							selectableIndex,
 							returnEmbeddable,
 							options
@@ -888,7 +1042,9 @@ public class JsonHelper {
 					break;
 				default:
 					values[selectableIndex] = fromString(
-							jdbcMapping,
+							javaType,
+							jdbcJavaType,
+							jdbcType,
 							string,
 							start,
 							i,
@@ -906,7 +1062,9 @@ public class JsonHelper {
 			int start,
 			int eIndex,
 			Object[] values,
-			JdbcMapping jdbcMapping,
+			JavaType<?> javaType,
+			JavaType<?> jdbcJavaType,
+			JdbcType jdbcType,
 			int selectableIndex,
 			boolean returnEmbeddable,
 			WrapperOptions options) throws SQLException {
@@ -933,7 +1091,9 @@ public class JsonHelper {
 					break;
 				default:
 					values[selectableIndex] = fromString(
-							jdbcMapping,
+							javaType,
+							jdbcJavaType,
+							jdbcType,
 							string,
 							start,
 							i,
@@ -1001,10 +1161,35 @@ public class JsonHelper {
 			boolean hasEscape,
 			boolean returnEmbeddable,
 			WrapperOptions options) throws SQLException {
+		return fromString(
+				jdbcMapping.getMappedJavaType(),
+				jdbcMapping.getJdbcJavaType(),
+				jdbcMapping.getJdbcType(),
+				string,
+				start,
+				end,
+				hasEscape,
+				returnEmbeddable,
+				options
+		);
+	}
+
+	private static Object fromString(
+			JavaType<?> javaType,
+			JavaType<?> jdbcJavaType,
+			JdbcType jdbcType,
+			String string,
+			int start,
+			int end,
+			boolean hasEscape,
+			boolean returnEmbeddable,
+			WrapperOptions options) throws SQLException {
 		if ( hasEscape ) {
 			final String unescaped = unescape( string, start, end );
 			return fromString(
-					jdbcMapping,
+					javaType,
+					jdbcJavaType,
+					jdbcType,
 					unescaped,
 					0,
 					unescaped.length(),
@@ -1012,22 +1197,33 @@ public class JsonHelper {
 					options
 			);
 		}
-		return fromString( jdbcMapping, string, start, end, returnEmbeddable, options );
+		return fromString(
+				javaType,
+				jdbcJavaType,
+				jdbcType,
+				string,
+				start,
+				end,
+				returnEmbeddable,
+				options
+		);
 	}
 
 	private static Object fromString(
-			JdbcMapping jdbcMapping,
+			JavaType<?> javaType,
+			JavaType<?> jdbcJavaType,
+			JdbcType jdbcType,
 			String string,
 			int start,
 			int end,
 			boolean returnEmbeddable,
 			WrapperOptions options) throws SQLException {
-		switch ( jdbcMapping.getJdbcType().getDefaultSqlTypeCode() ) {
+		switch ( jdbcType.getDefaultSqlTypeCode() ) {
 			case SqlTypes.BINARY:
 			case SqlTypes.VARBINARY:
 			case SqlTypes.LONGVARBINARY:
 			case SqlTypes.LONG32VARBINARY:
-				return jdbcMapping.getJdbcJavaType().wrap(
+				return jdbcJavaType.wrap(
 						PrimitiveByteArrayJavaType.INSTANCE.fromEncodedString(
 							string,
 							start,
@@ -1036,7 +1232,7 @@ public class JsonHelper {
 						options
 				);
 			case SqlTypes.DATE:
-				return jdbcMapping.getJdbcJavaType().wrap(
+				return jdbcJavaType.wrap(
 						JdbcDateJavaType.INSTANCE.fromEncodedString(
 								string,
 								start,
@@ -1047,7 +1243,7 @@ public class JsonHelper {
 			case SqlTypes.TIME:
 			case SqlTypes.TIME_WITH_TIMEZONE:
 			case SqlTypes.TIME_UTC:
-				return jdbcMapping.getJdbcJavaType().wrap(
+				return jdbcJavaType.wrap(
 						JdbcTimeJavaType.INSTANCE.fromEncodedString(
 								string,
 								start,
@@ -1056,7 +1252,7 @@ public class JsonHelper {
 						options
 				);
 			case SqlTypes.TIMESTAMP:
-				return jdbcMapping.getJdbcJavaType().wrap(
+				return jdbcJavaType.wrap(
 						JdbcTimestampJavaType.INSTANCE.fromEncodedString(
 								string,
 								start,
@@ -1066,7 +1262,7 @@ public class JsonHelper {
 				);
 			case SqlTypes.TIMESTAMP_WITH_TIMEZONE:
 			case SqlTypes.TIMESTAMP_UTC:
-				return jdbcMapping.getJdbcJavaType().wrap(
+				return jdbcJavaType.wrap(
 						OffsetDateTimeJavaType.INSTANCE.fromEncodedString(
 								string,
 								start,
@@ -1077,28 +1273,21 @@ public class JsonHelper {
 			case SqlTypes.TINYINT:
 			case SqlTypes.SMALLINT:
 			case SqlTypes.INTEGER:
-				if ( jdbcMapping.getValueConverter() == null ) {
+				if ( jdbcJavaType.getJavaTypeClass() == Boolean.class ) {
-					Class<?> javaTypeClass = jdbcMapping.getJavaTypeDescriptor().getJavaTypeClass();
+					return jdbcJavaType.wrap( Integer.parseInt( string, start, end, 10 ), options );
-					if ( javaTypeClass == Boolean.class ) {
+				}
-						// BooleanJavaType has this as an implicit conversion
+				else if ( jdbcJavaType instanceof EnumJavaType<?> ) {
-						return Integer.parseInt( string, start, end, 10 ) == 1;
+					return jdbcJavaType.wrap( Integer.parseInt( string, start, end, 10 ), options );
-					}
-					if ( javaTypeClass.isEnum() ) {
-						return javaTypeClass.getEnumConstants()[Integer.parseInt( string, start, end, 10 )];
-					}
 				}
 			case SqlTypes.CHAR:
 			case SqlTypes.NCHAR:
 			case SqlTypes.VARCHAR:
 			case SqlTypes.NVARCHAR:
-				if ( jdbcMapping.getValueConverter() == null
+				if ( jdbcJavaType.getJavaTypeClass() == Boolean.class && end == start + 1 ) {
-						&& jdbcMapping.getJavaTypeDescriptor().getJavaTypeClass() == Boolean.class ) {
+					return jdbcJavaType.wrap( string.charAt( start ), options );
-					// BooleanJavaType has this as an implicit conversion
-					return end == start + 1 && string.charAt( start ) == 'Y';
 				}
 			default:
-				if ( jdbcMapping.getJdbcType() instanceof AggregateJdbcType ) {
+				if ( jdbcType instanceof AggregateJdbcType aggregateJdbcType ) {
-					final AggregateJdbcType aggregateJdbcType = (AggregateJdbcType) jdbcMapping.getJdbcType();
 					final Object[] subValues = aggregateJdbcType.extractJdbcValues(
 							CharSequenceHelper.subSequence(
 									string,
@@ -1119,7 +1308,7 @@ public class JsonHelper {
 					return subValues;
 				}
 
-				return jdbcMapping.getJdbcJavaType().fromEncodedString(
+				return jdbcJavaType.fromEncodedString(
 						string,
 						start,
 						end

hibernate-core/src/main/java/org/hibernate/dialect/MariaDBDialect.java

@@ -30,7 +30,7 @@ import org.hibernate.tool.schema.extract.spi.SequenceInformationExtractor;
 import org.hibernate.type.SqlTypes;
 import org.hibernate.type.StandardBasicTypes;
 import org.hibernate.type.descriptor.jdbc.JdbcType;
-import org.hibernate.type.descriptor.jdbc.JsonArrayJdbcType;
+import org.hibernate.type.descriptor.jdbc.JsonArrayJdbcTypeConstructor;
 import org.hibernate.type.descriptor.jdbc.JsonJdbcType;
 import org.hibernate.type.descriptor.jdbc.spi.JdbcTypeRegistry;
 import org.hibernate.type.descriptor.sql.internal.DdlTypeImpl;
@@ -99,6 +99,11 @@ public class MariaDBDialect extends MySQLDialect {
 		commonFunctionFactory.jsonArrayAgg_mariadb();
 		commonFunctionFactory.jsonObjectAgg_mariadb();
 		commonFunctionFactory.jsonArrayAppend_mariadb();
+
+		if ( getVersion().isSameOrAfter( 10, 6 ) ) {
+			commonFunctionFactory.unnest_emulated();
+		}
+
 		commonFunctionFactory.inverseDistributionOrderedSetAggregates_windowEmulation();
 		functionContributions.getFunctionRegistry().patternDescriptorBuilder( "median", "median(?1) over ()" )
 				.setInvariantType( functionContributions.getTypeConfiguration().getBasicTypeRegistry().resolve( StandardBasicTypes.DOUBLE ) )
@@ -152,7 +157,7 @@ public class MariaDBDialect extends MySQLDialect {
 		final JdbcTypeRegistry jdbcTypeRegistry = typeContributions.getTypeConfiguration().getJdbcTypeRegistry();
 		// Make sure we register the JSON type descriptor before calling super, because MariaDB does not need casting
 		jdbcTypeRegistry.addDescriptorIfAbsent( SqlTypes.JSON, JsonJdbcType.INSTANCE );
-		jdbcTypeRegistry.addDescriptorIfAbsent( SqlTypes.JSON_ARRAY, JsonArrayJdbcType.INSTANCE );
+		jdbcTypeRegistry.addTypeConstructorIfAbsent( JsonArrayJdbcTypeConstructor.INSTANCE );
 
 		super.contributeTypes( typeContributions, serviceRegistry );
 		if ( getVersion().isSameOrAfter( 10, 7 ) ) {

hibernate-core/src/main/java/org/hibernate/dialect/MariaDBSqlAstTranslator.java

@@ -21,6 +21,7 @@ import org.hibernate.sql.ast.tree.expression.ColumnReference;
 import org.hibernate.sql.ast.tree.expression.Expression;
 import org.hibernate.sql.ast.tree.expression.Literal;
 import org.hibernate.sql.ast.tree.expression.Summarization;
+import org.hibernate.sql.ast.tree.from.DerivedTableReference;
 import org.hibernate.sql.ast.tree.from.NamedTableReference;
 import org.hibernate.sql.ast.tree.from.QueryPartTableReference;
 import org.hibernate.sql.ast.tree.insert.ConflictClause;
@@ -280,6 +281,11 @@ public class MariaDBSqlAstTranslator<T extends JdbcOperation> extends AbstractSq
 		emulateQueryPartTableReferenceColumnAliasing( tableReference );
 	}
 
+	@Override
+	protected void renderDerivedTableReferenceIdentificationVariable(DerivedTableReference tableReference) {
+		renderTableReferenceIdentificationVariable( tableReference );
+	}
+
 	@Override
 	public void visitOffsetFetchClause(QueryPart queryPart) {
 		if ( !isRowNumberingCurrentQueryPart() ) {

hibernate-core/src/main/java/org/hibernate/dialect/MySQLCastingJsonArrayJdbcType.java

@@ -5,16 +5,17 @@
 package org.hibernate.dialect;
 
 import org.hibernate.sql.ast.spi.SqlAppender;
+import org.hibernate.type.descriptor.jdbc.JdbcType;
 import org.hibernate.type.descriptor.jdbc.JsonArrayJdbcType;
 
 /**
  * @author Christian Beikov
  */
 public class MySQLCastingJsonArrayJdbcType extends JsonArrayJdbcType {
-	/**
+
-	 * Singleton access
+	public MySQLCastingJsonArrayJdbcType(JdbcType elementJdbcType) {
-	 */
+		super( elementJdbcType );
-	public static final JsonArrayJdbcType INSTANCE = new MySQLCastingJsonArrayJdbcType();
+	}
 
 	@Override
 	public void appendWriteExpression(

hibernate-core/src/main/java/org/hibernate/dialect/MySQLCastingJsonArrayJdbcTypeConstructor.java

@@ -0,0 +1,43 @@
+/*
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.dialect;
+
+import org.hibernate.tool.schema.extract.spi.ColumnTypeInformation;
+import org.hibernate.type.BasicType;
+import org.hibernate.type.SqlTypes;
+import org.hibernate.type.descriptor.jdbc.JdbcType;
+import org.hibernate.type.descriptor.jdbc.JdbcTypeConstructor;
+import org.hibernate.type.spi.TypeConfiguration;
+
+/**
+ * Factory for {@link MySQLCastingJsonArrayJdbcType}.
+ */
+public class MySQLCastingJsonArrayJdbcTypeConstructor implements JdbcTypeConstructor {
+
+	public static final MySQLCastingJsonArrayJdbcTypeConstructor INSTANCE = new MySQLCastingJsonArrayJdbcTypeConstructor();
+
+	@Override
+	public JdbcType resolveType(
+			TypeConfiguration typeConfiguration,
+			Dialect dialect,
+			BasicType<?> elementType,
+			ColumnTypeInformation columnTypeInformation) {
+		return resolveType( typeConfiguration, dialect, elementType.getJdbcType(), columnTypeInformation );
+	}
+
+	@Override
+	public JdbcType resolveType(
+			TypeConfiguration typeConfiguration,
+			Dialect dialect,
+			JdbcType elementType,
+			ColumnTypeInformation columnTypeInformation) {
+		return new MySQLCastingJsonArrayJdbcType( elementType );
+	}
+
+	@Override
+	public int getDefaultSqlTypeCode() {
+		return SqlTypes.JSON_ARRAY;
+	}
+}

hibernate-core/src/main/java/org/hibernate/dialect/MySQLDialect.java

@@ -537,6 +537,11 @@ public class MySQLDialect extends Dialect {
 		return Types.BIT;
 	}
 
+	@Override
+	public int getPreferredSqlTypeCodeForArray() {
+		return SqlTypes.JSON_ARRAY;
+	}
+
 //	@Override
 //	public int getDefaultDecimalPrecision() {
 //		//this is the maximum, but I guess it's too high
@@ -652,6 +657,10 @@ public class MySQLDialect extends Dialect {
 		functionFactory.jsonMergepatch_mysql();
 		functionFactory.jsonArrayAppend_mysql();
 		functionFactory.jsonArrayInsert_mysql();
+
+		if ( getMySQLVersion().isSameOrAfter( 8 ) ) {
+			functionFactory.unnest_emulated();
+		}
 	}
 
 	@Override
@@ -661,7 +670,7 @@ public class MySQLDialect extends Dialect {
 		final JdbcTypeRegistry jdbcTypeRegistry = typeContributions.getTypeConfiguration().getJdbcTypeRegistry();
 
 		jdbcTypeRegistry.addDescriptorIfAbsent( SqlTypes.JSON, MySQLCastingJsonJdbcType.INSTANCE );
-		jdbcTypeRegistry.addDescriptorIfAbsent( SqlTypes.JSON_ARRAY, MySQLCastingJsonArrayJdbcType.INSTANCE );
+		jdbcTypeRegistry.addTypeConstructorIfAbsent( MySQLCastingJsonArrayJdbcTypeConstructor.INSTANCE );
 
 		// MySQL requires a custom binder for binding untyped nulls with the NULL type
 		typeContributions.contributeJdbcType( NullJdbcType.INSTANCE );

hibernate-core/src/main/java/org/hibernate/dialect/MySQLSqlAstTranslator.java

@@ -23,6 +23,8 @@ import org.hibernate.sql.ast.tree.expression.ColumnReference;
 import org.hibernate.sql.ast.tree.expression.Expression;
 import org.hibernate.sql.ast.tree.expression.Literal;
 import org.hibernate.sql.ast.tree.expression.Summarization;
+import org.hibernate.sql.ast.tree.from.DerivedTableReference;
+import org.hibernate.sql.ast.tree.from.FunctionTableReference;
 import org.hibernate.sql.ast.tree.from.NamedTableReference;
 import org.hibernate.sql.ast.tree.from.QueryPartTableReference;
 import org.hibernate.sql.ast.tree.from.ValuesTableReference;
@@ -315,6 +317,17 @@ public class MySQLSqlAstTranslator<T extends JdbcOperation> extends AbstractSqlA
 		emulateValuesTableReferenceColumnAliasing( tableReference );
 	}
 
+	@Override
+	protected void renderDerivedTableReference(DerivedTableReference tableReference) {
+		if ( tableReference instanceof FunctionTableReference && tableReference.isLateral() ) {
+			// No need for a lateral keyword for functions
+			tableReference.accept( this );
+		}
+		else {
+			super.renderDerivedTableReference( tableReference );
+		}
+	}
+
 	@Override
 	public void visitOffsetFetchClause(QueryPart queryPart) {
 		if ( !isRowNumberingCurrentQueryPart() ) {

hibernate-core/src/main/java/org/hibernate/dialect/OracleDialect.java

@@ -83,13 +83,10 @@ import org.hibernate.type.JavaObjectType;
 import org.hibernate.type.NullType;
 import org.hibernate.type.StandardBasicTypes;
 import org.hibernate.type.descriptor.java.PrimitiveByteArrayJavaType;
-import org.hibernate.type.descriptor.jdbc.ArrayJdbcType;
 import org.hibernate.type.descriptor.jdbc.BlobJdbcType;
 import org.hibernate.type.descriptor.jdbc.JdbcType;
 import org.hibernate.type.descriptor.jdbc.NullJdbcType;
-import org.hibernate.type.descriptor.jdbc.ObjectJdbcType;
 import org.hibernate.type.descriptor.jdbc.ObjectNullAsNullTypeJdbcType;
-import org.hibernate.type.descriptor.jdbc.OracleJsonArrayBlobJdbcType;
 import org.hibernate.type.descriptor.jdbc.OracleJsonBlobJdbcType;
 import org.hibernate.type.descriptor.jdbc.SqlTypedJdbcType;
 import org.hibernate.type.descriptor.jdbc.spi.JdbcTypeRegistry;
@@ -134,7 +131,6 @@ import static org.hibernate.type.SqlTypes.FLOAT;
 import static org.hibernate.type.SqlTypes.GEOMETRY;
 import static org.hibernate.type.SqlTypes.INTEGER;
 import static org.hibernate.type.SqlTypes.JSON;
-import static org.hibernate.type.SqlTypes.JSON_ARRAY;
 import static org.hibernate.type.SqlTypes.NUMERIC;
 import static org.hibernate.type.SqlTypes.NVARCHAR;
 import static org.hibernate.type.SqlTypes.REAL;
@@ -425,6 +421,8 @@ public class OracleDialect extends Dialect {
 		functionFactory.xmlquery_oracle();
 		functionFactory.xmlexists();
 		functionFactory.xmlagg();
+
+		functionFactory.unnest_oracle();
 	}
 
 	@Override
@@ -821,11 +819,9 @@ public class OracleDialect extends Dialect {
 		ddlTypeRegistry.addDescriptor( new DdlTypeImpl( GEOMETRY, "MDSYS.SDO_GEOMETRY", this ) );
 		if ( getVersion().isSameOrAfter( 21 ) ) {
 			ddlTypeRegistry.addDescriptor( new DdlTypeImpl( JSON, "json", this ) );
-			ddlTypeRegistry.addDescriptor( new DdlTypeImpl( JSON_ARRAY, "json", this ) );
 		}
 		else {
 			ddlTypeRegistry.addDescriptor( new DdlTypeImpl( JSON, "blob", this ) );
-			ddlTypeRegistry.addDescriptor( new DdlTypeImpl( JSON_ARRAY, "blob", this ) );
 		}
 
 		ddlTypeRegistry.addDescriptor( new ArrayDdlTypeImpl( this, false ) );
@@ -995,16 +991,16 @@ public class OracleDialect extends Dialect {
 
 		if ( getVersion().isSameOrAfter( 21 ) ) {
 			typeContributions.contributeJdbcType( OracleJsonJdbcType.INSTANCE );
-			typeContributions.contributeJdbcType( OracleJsonArrayJdbcType.INSTANCE );
+			typeContributions.contributeJdbcTypeConstructor( OracleJsonArrayJdbcTypeConstructor.NATIVE_INSTANCE );
 		}
 		else {
 			typeContributions.contributeJdbcType( OracleJsonBlobJdbcType.INSTANCE );
-			typeContributions.contributeJdbcType( OracleJsonArrayBlobJdbcType.INSTANCE );
+			typeContributions.contributeJdbcTypeConstructor( OracleJsonArrayJdbcTypeConstructor.BLOB_INSTANCE );
 		}
 
 		if ( OracleJdbcHelper.isUsable( serviceRegistry ) ) {
 			// Register a JdbcType to allow reading from native queries
-			typeContributions.contributeJdbcType( new ArrayJdbcType( ObjectJdbcType.INSTANCE ) );
+//			typeContributions.contributeJdbcType( new ArrayJdbcType( ObjectJdbcType.INSTANCE ) );
 			typeContributions.contributeJdbcTypeConstructor( getArrayJdbcTypeConstructor( serviceRegistry ) );
 			typeContributions.contributeJdbcTypeConstructor( getNestedTableJdbcTypeConstructor( serviceRegistry ) );
 		}

hibernate-core/src/main/java/org/hibernate/dialect/OracleJsonArrayJdbcType.java

@@ -6,6 +6,7 @@ package org.hibernate.dialect;
 
 import org.hibernate.type.descriptor.converter.spi.BasicValueConverter;
 import org.hibernate.type.descriptor.java.JavaType;
+import org.hibernate.type.descriptor.jdbc.JdbcType;
 import org.hibernate.type.descriptor.jdbc.OracleJsonArrayBlobJdbcType;
 
 /**
@@ -14,12 +15,9 @@ import org.hibernate.type.descriptor.jdbc.OracleJsonArrayBlobJdbcType;
  * @author Christian Beikov
  */
 public class OracleJsonArrayJdbcType extends OracleJsonArrayBlobJdbcType {
-	/**
-	 * Singleton access
-	 */
-	public static final OracleJsonArrayJdbcType INSTANCE = new OracleJsonArrayJdbcType();
 
-	private OracleJsonArrayJdbcType() {
+	public OracleJsonArrayJdbcType(JdbcType elementJdbcType) {
+		super( elementJdbcType );
 	}
 
 	@Override

hibernate-core/src/main/java/org/hibernate/dialect/OracleJsonArrayJdbcTypeConstructor.java

@@ -0,0 +1,51 @@
+/*
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.dialect;
+
+import org.hibernate.tool.schema.extract.spi.ColumnTypeInformation;
+import org.hibernate.type.BasicType;
+import org.hibernate.type.SqlTypes;
+import org.hibernate.type.descriptor.jdbc.JdbcType;
+import org.hibernate.type.descriptor.jdbc.JdbcTypeConstructor;
+import org.hibernate.type.descriptor.jdbc.OracleJsonArrayBlobJdbcType;
+import org.hibernate.type.spi.TypeConfiguration;
+
+/**
+ * Factory for {@link OracleJsonArrayJdbcType} and {@link OracleJsonArrayBlobJdbcType}.
+ */
+public class OracleJsonArrayJdbcTypeConstructor implements JdbcTypeConstructor {
+
+	public static final OracleJsonArrayJdbcTypeConstructor NATIVE_INSTANCE = new OracleJsonArrayJdbcTypeConstructor( true );
+	public static final OracleJsonArrayJdbcTypeConstructor BLOB_INSTANCE = new OracleJsonArrayJdbcTypeConstructor( false );
+
+	private final boolean nativeJson;
+
+	public OracleJsonArrayJdbcTypeConstructor(boolean nativeJson) {
+		this.nativeJson = nativeJson;
+	}
+
+	@Override
+	public JdbcType resolveType(
+			TypeConfiguration typeConfiguration,
+			Dialect dialect,
+			BasicType<?> elementType,
+			ColumnTypeInformation columnTypeInformation) {
+		return resolveType( typeConfiguration, dialect, elementType.getJdbcType(), columnTypeInformation );
+	}
+
+	@Override
+	public JdbcType resolveType(
+			TypeConfiguration typeConfiguration,
+			Dialect dialect,
+			JdbcType elementType,
+			ColumnTypeInformation columnTypeInformation) {
+		return nativeJson ? new OracleJsonArrayJdbcType( elementType ) : new OracleJsonArrayBlobJdbcType( elementType );
+	}
+
+	@Override
+	public int getDefaultSqlTypeCode() {
+		return SqlTypes.JSON_ARRAY;
+	}
+}

hibernate-core/src/main/java/org/hibernate/dialect/OracleSqlAstTranslator.java

@@ -8,17 +8,22 @@ import java.util.ArrayList;
 import java.util.List;
 
 import org.hibernate.engine.spi.SessionFactoryImplementor;
+import org.hibernate.metamodel.mapping.CollectionPart;
 import org.hibernate.metamodel.mapping.EmbeddableValuedModelPart;
 import org.hibernate.metamodel.mapping.EntityIdentifierMapping;
 import org.hibernate.metamodel.mapping.EntityMappingType;
 import org.hibernate.metamodel.mapping.JdbcMappingContainer;
+import org.hibernate.metamodel.mapping.ModelPart;
 import org.hibernate.query.IllegalQueryOperationException;
+import org.hibernate.query.derived.AnonymousTupleTableGroupProducer;
 import org.hibernate.query.sqm.ComparisonOperator;
 import org.hibernate.query.sqm.FetchClauseType;
 import org.hibernate.query.sqm.FrameExclusion;
 import org.hibernate.query.sqm.FrameKind;
 import org.hibernate.sql.ast.Clause;
+import org.hibernate.sql.ast.SqlAstNodeRenderingMode;
 import org.hibernate.sql.ast.spi.SqlSelection;
+import org.hibernate.sql.ast.tree.SqlAstNode;
 import org.hibernate.sql.ast.tree.Statement;
 import org.hibernate.sql.ast.tree.cte.CteMaterialization;
 import org.hibernate.sql.ast.tree.expression.BinaryArithmeticExpression;
@@ -30,6 +35,7 @@ import org.hibernate.sql.ast.tree.expression.Over;
 import org.hibernate.sql.ast.tree.expression.SqlTuple;
 import org.hibernate.sql.ast.tree.expression.SqlTupleContainer;
 import org.hibernate.sql.ast.tree.expression.Summarization;
+import org.hibernate.sql.ast.tree.from.DerivedTableReference;
 import org.hibernate.sql.ast.tree.from.FromClause;
 import org.hibernate.sql.ast.tree.from.FunctionTableReference;
 import org.hibernate.sql.ast.tree.from.NamedTableReference;
@@ -254,9 +260,42 @@ public class OracleSqlAstTranslator<T extends JdbcOperation> extends SqlAstTrans
 
 	@Override
 	public void visitFunctionTableReference(FunctionTableReference tableReference) {
-		append( "table(" );
 		tableReference.getFunctionExpression().accept( this );
-		append( CLOSE_PARENTHESIS );
+		if ( !tableReference.rendersIdentifierVariable() ) {
+			renderDerivedTableReferenceIdentificationVariable( tableReference );
+		}
+	}
+
+	@Override
+	public void renderNamedSetReturningFunction(String functionName, List<? extends SqlAstNode> sqlAstArguments, AnonymousTupleTableGroupProducer tupleType, String tableIdentifierVariable, SqlAstNodeRenderingMode argumentRenderingMode) {
+		final ModelPart ordinalitySubPart = tupleType.findSubPart( CollectionPart.Nature.INDEX.getName(), null );
+		if ( ordinalitySubPart != null ) {
+			appendSql( "lateral (select t.*, rownum " );
+			appendSql( ordinalitySubPart.asBasicValuedModelPart().getSelectionExpression() );
+			appendSql( " from table(" );
+			renderSimpleNamedFunction( functionName, sqlAstArguments, argumentRenderingMode );
+			append( ") t)" );
+		}
+		else {
+			appendSql( "table(" );
+			super.renderNamedSetReturningFunction( functionName, sqlAstArguments, tupleType, tableIdentifierVariable, argumentRenderingMode );
+			append( ')' );
+		}
+	}
+
+	@Override
+	protected void renderDerivedTableReference(DerivedTableReference tableReference) {
+		if ( tableReference instanceof FunctionTableReference && tableReference.isLateral() ) {
+			// No need for a lateral keyword for functions
+			tableReference.accept( this );
+		}
+		else {
+			super.renderDerivedTableReference( tableReference );
+		}
+	}
+
+	@Override
+	protected void renderDerivedTableReferenceIdentificationVariable(DerivedTableReference tableReference) {
 		renderTableReferenceIdentificationVariable( tableReference );
 	}
 

hibernate-core/src/main/java/org/hibernate/dialect/PgJdbcHelper.java

@@ -12,6 +12,7 @@ import org.hibernate.boot.registry.classloading.spi.ClassLoaderService;
 import org.hibernate.boot.registry.classloading.spi.ClassLoadingException;
 import org.hibernate.service.ServiceRegistry;
 import org.hibernate.type.descriptor.jdbc.JdbcType;
+import org.hibernate.type.descriptor.jdbc.JdbcTypeConstructor;
 
 /**
  * The following class provides some convenience methods for accessing JdbcType instance,
@@ -52,12 +53,12 @@ public final class PgJdbcHelper {
 		return createJdbcType( serviceRegistry, "org.hibernate.dialect.PostgreSQLJsonPGObjectJsonbType" );
 	}
 
-	public static JdbcType getJsonArrayJdbcType(ServiceRegistry serviceRegistry) {
+	public static JdbcTypeConstructor getJsonArrayJdbcType(ServiceRegistry serviceRegistry) {
-		return createJdbcType( serviceRegistry, "org.hibernate.dialect.PostgreSQLJsonArrayPGObjectJsonType" );
+		return createJdbcTypeConstructor( serviceRegistry, "org.hibernate.dialect.PostgreSQLJsonArrayPGObjectJsonJdbcTypeConstructor" );
 	}
 
-	public static JdbcType getJsonbArrayJdbcType(ServiceRegistry serviceRegistry) {
+	public static JdbcTypeConstructor getJsonbArrayJdbcType(ServiceRegistry serviceRegistry) {
-		return createJdbcType( serviceRegistry, "org.hibernate.dialect.PostgreSQLJsonArrayPGObjectJsonbType" );
+		return createJdbcTypeConstructor( serviceRegistry, "org.hibernate.dialect.PostgreSQLJsonArrayPGObjectJsonbJdbcTypeConstructor" );
 	}
 
 	public static JdbcType createJdbcType(ServiceRegistry serviceRegistry, String className) {
@@ -74,4 +75,19 @@ public final class PgJdbcHelper {
 			throw new HibernateError( "Could not construct JdbcType", e );
 		}
 	}
+
+	public static JdbcTypeConstructor createJdbcTypeConstructor(ServiceRegistry serviceRegistry, String className) {
+		final ClassLoaderService classLoaderService = serviceRegistry.requireService( ClassLoaderService.class );
+		try {
+			final Class<?> clazz = classLoaderService.classForName( className );
+			final Constructor<?> constructor = clazz.getConstructor();
+			return (JdbcTypeConstructor) constructor.newInstance();
+		}
+		catch (NoSuchMethodException e) {
+			throw new HibernateError( "Class does not have an empty constructor", e );
+		}
+		catch (InstantiationException | IllegalAccessException | InvocationTargetException e) {
+			throw new HibernateError( "Could not construct JdbcTypeConstructor", e );
+		}
+	}
 }

hibernate-core/src/main/java/org/hibernate/dialect/PostgreSQLArrayJdbcType.java

@@ -73,7 +73,9 @@ public class PostgreSQLArrayJdbcType extends ArrayJdbcType {
 					);
 					objects = new Object[domainObjects.length];
 					for ( int i = 0; i < domainObjects.length; i++ ) {
-						objects[i] = aggregateJdbcType.createJdbcValue( domainObjects[i], options );
+						if ( domainObjects[i] != null ) {
+							objects[i] = aggregateJdbcType.createJdbcValue( domainObjects[i], options );
+						}
 					}
 				}
 				else {

hibernate-core/src/main/java/org/hibernate/dialect/PostgreSQLCastingJsonArrayJdbcType.java

@@ -5,6 +5,7 @@
 package org.hibernate.dialect;
 
 import org.hibernate.sql.ast.spi.SqlAppender;
+import org.hibernate.type.descriptor.jdbc.JdbcType;
 import org.hibernate.type.descriptor.jdbc.JsonArrayJdbcType;
 
 /**
@@ -12,12 +13,10 @@ import org.hibernate.type.descriptor.jdbc.JsonArrayJdbcType;
  */
 public class PostgreSQLCastingJsonArrayJdbcType extends JsonArrayJdbcType {
 
-	public static final PostgreSQLCastingJsonArrayJdbcType JSON_INSTANCE = new PostgreSQLCastingJsonArrayJdbcType( false );
-	public static final PostgreSQLCastingJsonArrayJdbcType JSONB_INSTANCE = new PostgreSQLCastingJsonArrayJdbcType( true );
-
 	private final boolean jsonb;
 
-	public PostgreSQLCastingJsonArrayJdbcType(boolean jsonb) {
+	public PostgreSQLCastingJsonArrayJdbcType(JdbcType elementJdbcType, boolean jsonb) {
+		super( elementJdbcType );
 		this.jsonb = jsonb;
 	}
 

hibernate-core/src/main/java/org/hibernate/dialect/PostgreSQLCastingJsonArrayJdbcTypeConstructor.java

@@ -0,0 +1,50 @@
+/*
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.dialect;
+
+import org.hibernate.tool.schema.extract.spi.ColumnTypeInformation;
+import org.hibernate.type.BasicType;
+import org.hibernate.type.SqlTypes;
+import org.hibernate.type.descriptor.jdbc.JdbcType;
+import org.hibernate.type.descriptor.jdbc.JdbcTypeConstructor;
+import org.hibernate.type.spi.TypeConfiguration;
+
+/**
+ * Factory for {@link PostgreSQLCastingJsonArrayJdbcType}.
+ */
+public class PostgreSQLCastingJsonArrayJdbcTypeConstructor implements JdbcTypeConstructor {
+
+	public static final PostgreSQLCastingJsonArrayJdbcTypeConstructor JSONB_INSTANCE = new PostgreSQLCastingJsonArrayJdbcTypeConstructor( true );
+	public static final PostgreSQLCastingJsonArrayJdbcTypeConstructor JSON_INSTANCE = new PostgreSQLCastingJsonArrayJdbcTypeConstructor( false );
+
+	private final boolean jsonb;
+
+	public PostgreSQLCastingJsonArrayJdbcTypeConstructor(boolean jsonb) {
+		this.jsonb = jsonb;
+	}
+
+	@Override
+	public JdbcType resolveType(
+			TypeConfiguration typeConfiguration,
+			Dialect dialect,
+			BasicType<?> elementType,
+			ColumnTypeInformation columnTypeInformation) {
+		return resolveType( typeConfiguration, dialect, elementType.getJdbcType(), columnTypeInformation );
+	}
+
+	@Override
+	public JdbcType resolveType(
+			TypeConfiguration typeConfiguration,
+			Dialect dialect,
+			JdbcType elementType,
+			ColumnTypeInformation columnTypeInformation) {
+		return new PostgreSQLCastingJsonArrayJdbcType( elementType, jsonb );
+	}
+
+	@Override
+	public int getDefaultSqlTypeCode() {
+		return SqlTypes.JSON_ARRAY;
+	}
+}

hibernate-core/src/main/java/org/hibernate/dialect/PostgreSQLDialect.java

@@ -17,6 +17,7 @@ import java.util.List;
 import java.util.Map;
 import java.util.TimeZone;
 
+import org.checkerframework.checker.nullness.qual.Nullable;
 import org.hibernate.Length;
 import org.hibernate.LockMode;
 import org.hibernate.LockOptions;
@@ -111,7 +112,6 @@ import static org.hibernate.type.SqlTypes.GEOGRAPHY;
 import static org.hibernate.type.SqlTypes.GEOMETRY;
 import static org.hibernate.type.SqlTypes.INET;
 import static org.hibernate.type.SqlTypes.JSON;
-import static org.hibernate.type.SqlTypes.JSON_ARRAY;
 import static org.hibernate.type.SqlTypes.LONG32NVARCHAR;
 import static org.hibernate.type.SqlTypes.LONG32VARBINARY;
 import static org.hibernate.type.SqlTypes.LONG32VARCHAR;
@@ -261,7 +261,6 @@ public class PostgreSQLDialect extends Dialect {
 
 		// Prefer jsonb if possible
 		ddlTypeRegistry.addDescriptor( new DdlTypeImpl( JSON, "jsonb", this ) );
-		ddlTypeRegistry.addDescriptor( new DdlTypeImpl( JSON_ARRAY, "jsonb", this ) );
 
 		ddlTypeRegistry.addDescriptor( new NamedNativeEnumDdlTypeImpl( this ) );
 		ddlTypeRegistry.addDescriptor( new NamedNativeOrdinalEnumDdlTypeImpl( this ) );
@@ -665,6 +664,18 @@ public class PostgreSQLDialect extends Dialect {
 		);
 		functionContributions.getFunctionRegistry().registerAlternateKey( "truncate", "trunc" );
 		functionFactory.dateTrunc();
+
+		if ( getVersion().isSameOrAfter( 17 ) ) {
+			functionFactory.unnest( null, "ordinality" );
+		}
+		else {
+			functionFactory.unnest_postgresql();
+		}
+	}
+
+	@Override
+	public @Nullable String getDefaultOrdinalityColumnName() {
+		return "ordinality";
 	}
 
 	/**
@@ -1415,14 +1426,14 @@ public class PostgreSQLDialect extends Dialect {
 				jdbcTypeRegistry.addDescriptorIfAbsent( PgJdbcHelper.getIntervalJdbcType( serviceRegistry ) );
 				jdbcTypeRegistry.addDescriptorIfAbsent( PgJdbcHelper.getStructJdbcType( serviceRegistry ) );
 				jdbcTypeRegistry.addDescriptorIfAbsent( PgJdbcHelper.getJsonbJdbcType( serviceRegistry ) );
-				jdbcTypeRegistry.addDescriptorIfAbsent( PgJdbcHelper.getJsonbArrayJdbcType( serviceRegistry ) );
+				jdbcTypeRegistry.addTypeConstructorIfAbsent( PgJdbcHelper.getJsonbArrayJdbcType( serviceRegistry ) );
 			}
 			else {
 				jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingInetJdbcType.INSTANCE );
 				jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingIntervalSecondJdbcType.INSTANCE );
 				jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLStructCastingJdbcType.INSTANCE );
 				jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingJsonJdbcType.JSONB_INSTANCE );
-				jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingJsonArrayJdbcType.JSONB_INSTANCE );
+				jdbcTypeRegistry.addTypeConstructorIfAbsent( PostgreSQLCastingJsonArrayJdbcTypeConstructor.JSONB_INSTANCE );
 			}
 		}
 		else {
@@ -1430,7 +1441,7 @@ public class PostgreSQLDialect extends Dialect {
 			jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingIntervalSecondJdbcType.INSTANCE );
 			jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLStructCastingJdbcType.INSTANCE );
 			jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingJsonJdbcType.JSONB_INSTANCE );
-			jdbcTypeRegistry.addDescriptorIfAbsent( PostgreSQLCastingJsonArrayJdbcType.JSONB_INSTANCE );
+			jdbcTypeRegistry.addTypeConstructorIfAbsent( PostgreSQLCastingJsonArrayJdbcTypeConstructor.JSONB_INSTANCE );
 		}
 
 		// PostgreSQL requires a custom binder for binding untyped nulls as VARBINARY
@@ -1450,6 +1461,7 @@ public class PostgreSQLDialect extends Dialect {
 		jdbcTypeRegistry.addDescriptor( PostgreSQLOrdinalEnumJdbcType.INSTANCE );
 		jdbcTypeRegistry.addDescriptor( PostgreSQLUUIDJdbcType.INSTANCE );
 
+		// Replace the standard array constructor
 		jdbcTypeRegistry.addTypeConstructor( PostgreSQLArrayJdbcTypeConstructor.INSTANCE );
 	}
 

hibernate-core/src/main/java/org/hibernate/dialect/PostgreSQLJsonArrayPGObjectJsonJdbcTypeConstructor.java

@@ -0,0 +1,41 @@
+/*
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.dialect;
+
+import org.hibernate.tool.schema.extract.spi.ColumnTypeInformation;
+import org.hibernate.type.BasicType;
+import org.hibernate.type.SqlTypes;
+import org.hibernate.type.descriptor.jdbc.JdbcType;
+import org.hibernate.type.descriptor.jdbc.JdbcTypeConstructor;
+import org.hibernate.type.spi.TypeConfiguration;
+
+/**
+ * Factory for {@link PostgreSQLCastingJsonArrayJdbcType}.
+ */
+public class PostgreSQLJsonArrayPGObjectJsonJdbcTypeConstructor implements JdbcTypeConstructor {
+
+	@Override
+	public JdbcType resolveType(
+			TypeConfiguration typeConfiguration,
+			Dialect dialect,
+			BasicType<?> elementType,
+			ColumnTypeInformation columnTypeInformation) {
+		return resolveType( typeConfiguration, dialect, elementType.getJdbcType(), columnTypeInformation );
+	}
+
+	@Override
+	public JdbcType resolveType(
+			TypeConfiguration typeConfiguration,
+			Dialect dialect,
+			JdbcType elementType,
+			ColumnTypeInformation columnTypeInformation) {
+		return new PostgreSQLJsonArrayPGObjectType( elementType, false );
+	}
+
+	@Override
+	public int getDefaultSqlTypeCode() {
+		return SqlTypes.JSON_ARRAY;
+	}
+}

hibernate-core/src/main/java/org/hibernate/dialect/PostgreSQLJsonArrayPGObjectJsonType.java

@@ -1,14 +0,0 @@
-/*
- * SPDX-License-Identifier: LGPL-2.1-or-later
- * Copyright Red Hat Inc. and Hibernate Authors
- */
-package org.hibernate.dialect;
-
-/**
- * @author Christian Beikov
- */
-public class PostgreSQLJsonArrayPGObjectJsonType extends AbstractPostgreSQLJsonArrayPGObjectType {
-	public PostgreSQLJsonArrayPGObjectJsonType() {
-		super( false );
-	}
-}

hibernate-core/src/main/java/org/hibernate/dialect/PostgreSQLJsonArrayPGObjectJsonbJdbcTypeConstructor.java

@@ -0,0 +1,41 @@
+/*
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.dialect;
+
+import org.hibernate.tool.schema.extract.spi.ColumnTypeInformation;
+import org.hibernate.type.BasicType;
+import org.hibernate.type.SqlTypes;
+import org.hibernate.type.descriptor.jdbc.JdbcType;
+import org.hibernate.type.descriptor.jdbc.JdbcTypeConstructor;
+import org.hibernate.type.spi.TypeConfiguration;
+
+/**
+ * Factory for {@link PostgreSQLCastingJsonArrayJdbcType}.
+ */
+public class PostgreSQLJsonArrayPGObjectJsonbJdbcTypeConstructor implements JdbcTypeConstructor {
+
+	@Override
+	public JdbcType resolveType(
+			TypeConfiguration typeConfiguration,
+			Dialect dialect,
+			BasicType<?> elementType,
+			ColumnTypeInformation columnTypeInformation) {
+		return resolveType( typeConfiguration, dialect, elementType.getJdbcType(), columnTypeInformation );
+	}
+
+	@Override
+	public JdbcType resolveType(
+			TypeConfiguration typeConfiguration,
+			Dialect dialect,
+			JdbcType elementType,
+			ColumnTypeInformation columnTypeInformation) {
+		return new PostgreSQLJsonArrayPGObjectType( elementType, true );
+	}
+
+	@Override
+	public int getDefaultSqlTypeCode() {
+		return SqlTypes.JSON_ARRAY;
+	}
+}

hibernate-core/src/main/java/org/hibernate/dialect/PostgreSQLJsonArrayPGObjectJsonbType.java

@@ -1,14 +0,0 @@
-/*
- * SPDX-License-Identifier: LGPL-2.1-or-later
- * Copyright Red Hat Inc. and Hibernate Authors
- */
-package org.hibernate.dialect;
-
-/**
- * @author Christian Beikov
- */
-public class PostgreSQLJsonArrayPGObjectJsonbType extends AbstractPostgreSQLJsonArrayPGObjectType {
-	public PostgreSQLJsonArrayPGObjectJsonbType() {
-		super( true );
-	}
-}

hibernate-core/src/main/java/org/hibernate/dialect/PostgreSQLJsonArrayPGObjectType.java

@@ -16,6 +16,7 @@ import org.hibernate.type.descriptor.WrapperOptions;
 import org.hibernate.type.descriptor.java.JavaType;
 import org.hibernate.type.descriptor.jdbc.BasicBinder;
 import org.hibernate.type.descriptor.jdbc.BasicExtractor;
+import org.hibernate.type.descriptor.jdbc.JdbcType;
 import org.hibernate.type.descriptor.jdbc.JsonArrayJdbcType;
 
 import org.postgresql.util.PGobject;
@@ -23,10 +24,12 @@ import org.postgresql.util.PGobject;
 /**
  * @author Christian Beikov
  */
-public abstract class AbstractPostgreSQLJsonArrayPGObjectType extends JsonArrayJdbcType {
+public class PostgreSQLJsonArrayPGObjectType extends JsonArrayJdbcType {
 
 	private final boolean jsonb;
-	protected AbstractPostgreSQLJsonArrayPGObjectType(boolean jsonb) {
+
+	public PostgreSQLJsonArrayPGObjectType(JdbcType elementJdbcType, boolean jsonb) {
+		super( elementJdbcType );
 		this.jsonb = jsonb;
 	}
 
@@ -41,7 +44,7 @@ public abstract class AbstractPostgreSQLJsonArrayPGObjectType extends JsonArrayJ
 			@Override
 			protected void doBind(PreparedStatement st, X value, int index, WrapperOptions options)
 					throws SQLException {
-				final String stringValue = ( (AbstractPostgreSQLJsonArrayPGObjectType) getJdbcType() ).toString(
+				final String stringValue = ( (PostgreSQLJsonArrayPGObjectType) getJdbcType() ).toString(
 						value,
 						getJavaType(),
 						options
@@ -55,7 +58,7 @@ public abstract class AbstractPostgreSQLJsonArrayPGObjectType extends JsonArrayJ
 			@Override
 			protected void doBind(CallableStatement st, X value, String name, WrapperOptions options)
 					throws SQLException {
-				final String stringValue = ( (AbstractPostgreSQLJsonArrayPGObjectType) getJdbcType() ).toString(
+				final String stringValue = ( (PostgreSQLJsonArrayPGObjectType) getJdbcType() ).toString(
 						value,
 						getJavaType(),
 						options
@@ -91,7 +94,7 @@ public abstract class AbstractPostgreSQLJsonArrayPGObjectType extends JsonArrayJ
 				if ( object == null ) {
 					return null;
 				}
-				return ( (AbstractPostgreSQLJsonArrayPGObjectType) getJdbcType() ).fromString(
+				return ( (PostgreSQLJsonArrayPGObjectType) getJdbcType() ).fromString(
 						object.toString(),
 						getJavaType(),
 						options

hibernate-core/src/main/java/org/hibernate/dialect/SQLServerCastingXmlArrayJdbcType.java

@@ -0,0 +1,29 @@
+/*
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.dialect;
+
+import org.hibernate.sql.ast.spi.SqlAppender;
+import org.hibernate.type.descriptor.jdbc.JdbcType;
+import org.hibernate.type.descriptor.jdbc.XmlArrayJdbcType;
+
+/**
+ * @author Christian Beikov
+ */
+public class SQLServerCastingXmlArrayJdbcType extends XmlArrayJdbcType {
+
+	public SQLServerCastingXmlArrayJdbcType(JdbcType elementJdbcType) {
+		super( elementJdbcType );
+	}
+
+	@Override
+	public void appendWriteExpression(
+			String writeExpression,
+			SqlAppender appender,
+			Dialect dialect) {
+		appender.append( "cast(" );
+		appender.append( writeExpression );
+		appender.append( " as xml)" );
+	}
+}

hibernate-core/src/main/java/org/hibernate/dialect/SQLServerCastingXmlArrayJdbcTypeConstructor.java

@@ -0,0 +1,43 @@
+/*
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.dialect;
+
+import org.hibernate.tool.schema.extract.spi.ColumnTypeInformation;
+import org.hibernate.type.BasicType;
+import org.hibernate.type.SqlTypes;
+import org.hibernate.type.descriptor.jdbc.JdbcType;
+import org.hibernate.type.descriptor.jdbc.JdbcTypeConstructor;
+import org.hibernate.type.spi.TypeConfiguration;
+
+/**
+ * Factory for {@link SQLServerCastingXmlArrayJdbcType}.
+ */
+public class SQLServerCastingXmlArrayJdbcTypeConstructor implements JdbcTypeConstructor {
+
+	public static final SQLServerCastingXmlArrayJdbcTypeConstructor INSTANCE = new SQLServerCastingXmlArrayJdbcTypeConstructor();
+
+	@Override
+	public JdbcType resolveType(
+			TypeConfiguration typeConfiguration,
+			Dialect dialect,
+			BasicType<?> elementType,
+			ColumnTypeInformation columnTypeInformation) {
+		return resolveType( typeConfiguration, dialect, elementType.getJdbcType(), columnTypeInformation );
+	}
+
+	@Override
+	public JdbcType resolveType(
+			TypeConfiguration typeConfiguration,
+			Dialect dialect,
+			JdbcType elementType,
+			ColumnTypeInformation columnTypeInformation) {
+		return new SQLServerCastingXmlArrayJdbcType( elementType );
+	}
+
+	@Override
+	public int getDefaultSqlTypeCode() {
+		return SqlTypes.XML_ARRAY;
+	}
+}

hibernate-core/src/main/java/org/hibernate/dialect/SQLServerCastingXmlJdbcType.java

@@ -0,0 +1,43 @@
+/*
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.dialect;
+
+import org.hibernate.metamodel.mapping.EmbeddableMappingType;
+import org.hibernate.metamodel.spi.RuntimeModelCreationContext;
+import org.hibernate.sql.ast.spi.SqlAppender;
+import org.hibernate.type.descriptor.jdbc.AggregateJdbcType;
+import org.hibernate.type.descriptor.jdbc.XmlJdbcType;
+
+/**
+ * @author Christian Beikov
+ */
+public class SQLServerCastingXmlJdbcType extends XmlJdbcType {
+	/**
+	 * Singleton access
+	 */
+	public static final XmlJdbcType INSTANCE = new SQLServerCastingXmlJdbcType( null );
+
+	public SQLServerCastingXmlJdbcType(EmbeddableMappingType embeddableMappingType) {
+		super( embeddableMappingType );
+	}
+
+	@Override
+	public AggregateJdbcType resolveAggregateJdbcType(
+			EmbeddableMappingType mappingType,
+			String sqlType,
+			RuntimeModelCreationContext creationContext) {
+		return new SQLServerCastingXmlJdbcType( mappingType );
+	}
+
+	@Override
+	public void appendWriteExpression(
+			String writeExpression,
+			SqlAppender appender,
+			Dialect dialect) {
+		appender.append( "cast(" );
+		appender.append( writeExpression );
+		appender.append( " as xml)" );
+	}
+}

hibernate-core/src/main/java/org/hibernate/dialect/SQLServerDialect.java

@@ -82,7 +82,6 @@ import org.hibernate.type.descriptor.jdbc.JdbcType;
 import org.hibernate.type.descriptor.jdbc.TimestampUtcAsJdbcTimestampJdbcType;
 import org.hibernate.type.descriptor.jdbc.TinyIntAsSmallIntJdbcType;
 import org.hibernate.type.descriptor.jdbc.UUIDJdbcType;
-import org.hibernate.type.descriptor.jdbc.XmlJdbcType;
 import org.hibernate.type.descriptor.jdbc.spi.JdbcTypeRegistry;
 import org.hibernate.type.descriptor.sql.internal.DdlTypeImpl;
 import org.hibernate.type.descriptor.sql.spi.DdlTypeRegistry;
@@ -116,6 +115,7 @@ import static org.hibernate.type.SqlTypes.TIME_WITH_TIMEZONE;
 import static org.hibernate.type.SqlTypes.UUID;
 import static org.hibernate.type.SqlTypes.VARBINARY;
 import static org.hibernate.type.SqlTypes.VARCHAR;
+import static org.hibernate.type.SqlTypes.XML_ARRAY;
 import static org.hibernate.type.descriptor.DateTimeUtils.appendAsDate;
 import static org.hibernate.type.descriptor.DateTimeUtils.appendAsTime;
 import static org.hibernate.type.descriptor.DateTimeUtils.appendAsTimestampWithMicros;
@@ -267,6 +267,11 @@ public class SQLServerDialect extends AbstractTransactSQLDialect {
 		ddlTypeRegistry.addDescriptor( new DdlTypeImpl( UUID, "uniqueidentifier", this ) );
 	}
 
+	@Override
+	public int getPreferredSqlTypeCodeForArray() {
+		return XML_ARRAY;
+	}
+
 	@Override
 	public JdbcType resolveSqlTypeDescriptor(
 			String columnTypeName,
@@ -329,8 +334,9 @@ public class SQLServerDialect extends AbstractTransactSQLDialect {
 				Types.TINYINT,
 				TinyIntAsSmallIntJdbcType.INSTANCE
 		);
-		typeContributions.contributeJdbcType( XmlJdbcType.INSTANCE );
+		typeContributions.contributeJdbcType( SQLServerCastingXmlJdbcType.INSTANCE );
 		typeContributions.contributeJdbcType( UUIDJdbcType.INSTANCE );
+		typeContributions.contributeJdbcTypeConstructor( SQLServerCastingXmlArrayJdbcTypeConstructor.INSTANCE );
 	}
 
 	@Override
@@ -439,6 +445,9 @@ public class SQLServerDialect extends AbstractTransactSQLDialect {
 		functionFactory.xmlquery_sqlserver();
 		functionFactory.xmlexists_sqlserver();
 		functionFactory.xmlagg_sqlserver();
+
+		functionFactory.unnest_sqlserver();
+
 		if ( getVersion().isSameOrAfter( 14 ) ) {
 			functionFactory.listagg_stringAggWithinGroup( "varchar(max)" );
 			functionFactory.jsonArrayAgg_sqlserver( getVersion().isSameOrAfter( 16 ) );

hibernate-core/src/main/java/org/hibernate/dialect/SQLServerSqlAstTranslator.java

@@ -10,13 +10,18 @@ import org.hibernate.LockMode;
 import org.hibernate.LockOptions;
 import org.hibernate.engine.spi.SessionFactoryImplementor;
 import org.hibernate.internal.util.collections.Stack;
+import org.hibernate.metamodel.mapping.CollectionPart;
 import org.hibernate.metamodel.mapping.JdbcMappingContainer;
+import org.hibernate.metamodel.mapping.ModelPart;
 import org.hibernate.query.IllegalQueryOperationException;
+import org.hibernate.query.derived.AnonymousTupleTableGroupProducer;
 import org.hibernate.query.sqm.ComparisonOperator;
 import org.hibernate.query.sqm.FetchClauseType;
 import org.hibernate.sql.ast.Clause;
 import org.hibernate.sql.ast.SqlAstJoinType;
+import org.hibernate.sql.ast.SqlAstNodeRenderingMode;
 import org.hibernate.sql.ast.spi.SqlSelection;
+import org.hibernate.sql.ast.tree.SqlAstNode;
 import org.hibernate.sql.ast.tree.Statement;
 import org.hibernate.sql.ast.tree.delete.DeleteStatement;
 import org.hibernate.sql.ast.tree.expression.BinaryArithmeticExpression;
@@ -24,10 +29,9 @@ import org.hibernate.sql.ast.tree.expression.Expression;
 import org.hibernate.sql.ast.tree.expression.Literal;
 import org.hibernate.sql.ast.tree.expression.SqlTuple;
 import org.hibernate.sql.ast.tree.expression.Summarization;
+import org.hibernate.sql.ast.tree.from.DerivedTableReference;
 import org.hibernate.sql.ast.tree.from.NamedTableReference;
-import org.hibernate.sql.ast.tree.from.TableGroup;
 import org.hibernate.sql.ast.tree.from.TableGroupJoin;
-import org.hibernate.sql.ast.tree.from.TableReference;
 import org.hibernate.sql.ast.tree.from.UnionTableReference;
 import org.hibernate.sql.ast.tree.insert.ConflictClause;
 import org.hibernate.sql.ast.tree.insert.InsertSelectStatement;
@@ -180,17 +184,24 @@ public class SQLServerSqlAstTranslator<T extends JdbcOperation> extends SqlAstTr
 		}
 	}
 
-	protected boolean renderPrimaryTableReference(TableGroup tableGroup, LockMode lockMode) {
+	@Override
-		if ( shouldInlineCte( tableGroup ) ) {
+	protected void renderDerivedTableReference(DerivedTableReference tableReference) {
-			inlineCteTableGroup( tableGroup, lockMode );
-			return false;
-		}
-		final TableReference tableReference = tableGroup.getPrimaryTableReference();
-		if ( tableReference instanceof NamedTableReference ) {
-			return renderNamedTableReference( (NamedTableReference) tableReference, lockMode );
-		}
 		tableReference.accept( this );
-		return false;
+	}
+
+	@Override
+	public void renderNamedSetReturningFunction(String functionName, List<? extends SqlAstNode> sqlAstArguments, AnonymousTupleTableGroupProducer tupleType, String tableIdentifierVariable, SqlAstNodeRenderingMode argumentRenderingMode) {
+		final ModelPart ordinalitySubPart = tupleType.findSubPart( CollectionPart.Nature.INDEX.getName(), null );
+		if ( ordinalitySubPart != null ) {
+			appendSql( "(select t.*, row_number() over(order by (select 1)) " );
+			appendSql( ordinalitySubPart.asBasicValuedModelPart().getSelectionExpression() );
+			appendSql( " from " );
+			renderSimpleNamedFunction( functionName, sqlAstArguments, argumentRenderingMode );
+			append( " t)" );
+		}
+		else {
+			super.renderNamedSetReturningFunction( functionName, sqlAstArguments, tupleType, tableIdentifierVariable, argumentRenderingMode );
+		}
 	}
 
 	@Override

hibernate-core/src/main/java/org/hibernate/dialect/SpannerSqlAstTranslator.java

@@ -6,7 +6,6 @@ package org.hibernate.dialect;
 
 import java.util.List;
 
-import org.hibernate.LockMode;
 import org.hibernate.engine.spi.SessionFactoryImplementor;
 import org.hibernate.query.sqm.ComparisonOperator;
 import org.hibernate.sql.ast.Clause;
@@ -18,9 +17,6 @@ import org.hibernate.sql.ast.tree.expression.Literal;
 import org.hibernate.sql.ast.tree.expression.SqlTuple;
 import org.hibernate.sql.ast.tree.expression.Summarization;
 import org.hibernate.sql.ast.tree.from.DerivedTableReference;
-import org.hibernate.sql.ast.tree.from.NamedTableReference;
-import org.hibernate.sql.ast.tree.from.TableGroup;
-import org.hibernate.sql.ast.tree.from.TableReference;
 import org.hibernate.sql.ast.tree.select.QueryPart;
 import org.hibernate.sql.ast.tree.select.QuerySpec;
 import org.hibernate.sql.ast.tree.select.SelectClause;
@@ -107,17 +103,8 @@ public class SpannerSqlAstTranslator<T extends JdbcOperation> extends AbstractSq
 	}
 
 	@Override
-	protected boolean renderPrimaryTableReference(TableGroup tableGroup, LockMode lockMode) {
+	protected void renderDerivedTableReference(DerivedTableReference tableReference) {
-		if ( shouldInlineCte( tableGroup ) ) {
+		final boolean correlated = tableReference.isLateral();
-			inlineCteTableGroup( tableGroup, lockMode );
-			return false;
-		}
-		final TableReference tableReference = tableGroup.getPrimaryTableReference();
-		if ( tableReference instanceof NamedTableReference ) {
-			return renderNamedTableReference( (NamedTableReference) tableReference, lockMode );
-		}
-		final DerivedTableReference derivedTableReference = (DerivedTableReference) tableReference;
-		final boolean correlated = derivedTableReference.isLateral();
 		final boolean oldCorrelated = this.correlated;
 		if ( correlated ) {
 			this.correlated = true;
@@ -128,7 +115,6 @@ public class SpannerSqlAstTranslator<T extends JdbcOperation> extends AbstractSq
 			this.correlated = oldCorrelated;
 			appendSql( CLOSE_PARENTHESIS );
 		}
-		return false;
 	}
 
 	@Override

hibernate-core/src/main/java/org/hibernate/dialect/SybaseASEDialect.java

@@ -13,7 +13,9 @@ import org.hibernate.Length;
 import org.hibernate.LockMode;
 import org.hibernate.LockOptions;
 import org.hibernate.QueryTimeoutException;
+import org.hibernate.boot.model.FunctionContributions;
 import org.hibernate.boot.model.TypeContributions;
+import org.hibernate.dialect.function.CommonFunctionFactory;
 import org.hibernate.dialect.pagination.LimitHandler;
 import org.hibernate.dialect.pagination.TopLimitHandler;
 import org.hibernate.engine.jdbc.Size;
@@ -52,6 +54,7 @@ import static org.hibernate.type.SqlTypes.NCLOB;
 import static org.hibernate.type.SqlTypes.TIME;
 import static org.hibernate.type.SqlTypes.TIMESTAMP;
 import static org.hibernate.type.SqlTypes.TIMESTAMP_WITH_TIMEZONE;
+import static org.hibernate.type.SqlTypes.XML_ARRAY;
 
 /**
  * A {@linkplain Dialect SQL dialect} for Sybase Adaptive Server Enterprise 16 and above.
@@ -157,6 +160,11 @@ public class SybaseASEDialect extends SybaseDialect {
 		}
 	}
 
+	@Override
+	public int getPreferredSqlTypeCodeForArray() {
+		return XML_ARRAY;
+	}
+
 	@Override
 	public int getMaxVarcharLength() {
 		// the maximum length of a VARCHAR or VARBINARY
@@ -168,6 +176,15 @@ public class SybaseASEDialect extends SybaseDialect {
 		return 16_384;
 	}
 
+	@Override
+	public void initializeFunctionRegistry(FunctionContributions functionContributions) {
+		super.initializeFunctionRegistry( functionContributions );
+
+		CommonFunctionFactory functionFactory = new CommonFunctionFactory( functionContributions);
+
+		functionFactory.unnest_sybasease();
+	}
+
 	@Override
 	public long getDefaultLobLength() {
 		return Length.LONG32;

hibernate-core/src/main/java/org/hibernate/dialect/SybaseASESqlAstTranslator.java

@@ -11,6 +11,7 @@ import org.hibernate.LockMode;
 import org.hibernate.LockOptions;
 import org.hibernate.engine.spi.SessionFactoryImplementor;
 import org.hibernate.internal.util.collections.Stack;
+import org.hibernate.metamodel.mapping.JdbcMappingContainer;
 import org.hibernate.query.IllegalQueryOperationException;
 import org.hibernate.query.sqm.ComparisonOperator;
 import org.hibernate.sql.ast.Clause;
@@ -46,6 +47,7 @@ import org.hibernate.sql.ast.tree.select.QuerySpec;
 import org.hibernate.sql.ast.tree.select.SelectClause;
 import org.hibernate.sql.ast.tree.update.UpdateStatement;
 import org.hibernate.sql.exec.spi.JdbcOperation;
+import org.hibernate.type.SqlTypes;
 
 /**
  * A SQL AST translator for Sybase ASE.
@@ -320,7 +322,7 @@ public class SybaseASESqlAstTranslator<T extends JdbcOperation> extends Abstract
 		append( '(' );
 		visitValuesListEmulateSelectUnion( tableReference.getValuesList() );
 		append( ')' );
-		renderDerivedTableReference( tableReference );
+		renderDerivedTableReferenceIdentificationVariable( tableReference );
 	}
 
 	@Override
@@ -355,8 +357,56 @@ public class SybaseASESqlAstTranslator<T extends JdbcOperation> extends Abstract
 
 	@Override
 	protected void renderComparison(Expression lhs, ComparisonOperator operator, Expression rhs) {
+		// In Sybase ASE, XMLTYPE is not "comparable", so we have to cast the two parts to varchar for this purpose
+		final boolean isLob = isLob( lhs.getExpressionType() );
+		if ( isLob ) {
+			switch ( operator ) {
+				case EQUAL:
+					lhs.accept( this );
+					appendSql( " like " );
+					rhs.accept( this );
+					return;
+				case NOT_EQUAL:
+					lhs.accept( this );
+					appendSql( " not like " );
+					rhs.accept( this );
+					return;
+				default:
+					// Fall through
+					break;
+			}
+		}
 		// I think intersect is only supported in 16.0 SP3
 		if ( getDialect().isAnsiNullOn() ) {
+			if ( isLob ) {
+				switch ( operator ) {
+					case DISTINCT_FROM:
+						appendSql( "case when " );
+						lhs.accept( this );
+						appendSql( " like " );
+						rhs.accept( this );
+						appendSql( " or " );
+						lhs.accept( this );
+						appendSql( " is null and " );
+						rhs.accept( this );
+						appendSql( " is null then 0 else 1 end=1" );
+						return;
+					case NOT_DISTINCT_FROM:
+						appendSql( "case when " );
+						lhs.accept( this );
+						appendSql( " like " );
+						rhs.accept( this );
+						appendSql( " or " );
+						lhs.accept( this );
+						appendSql( " is null and " );
+						rhs.accept( this );
+						appendSql( " is null then 0 else 1 end=0" );
+						return;
+					default:
+						// Fall through
+						break;
+				}
+			}
 			if ( supportsDistinctFromPredicate() ) {
 				renderComparisonEmulateIntersect( lhs, operator, rhs );
 			}
@@ -377,10 +427,20 @@ public class SybaseASESqlAstTranslator<T extends JdbcOperation> extends Abstract
 				lhs.accept( this );
 				switch ( operator ) {
 					case DISTINCT_FROM:
-						appendSql( "<>" );
+						if ( isLob ) {
+							appendSql( " not like " );
+						}
+						else {
+							appendSql( "<>" );
+						}
 						break;
 					case NOT_DISTINCT_FROM:
-						appendSql( '=' );
+						if ( isLob ) {
+							appendSql( " like " );
+						}
+						else {
+							appendSql( '=' );
+						}
 						break;
 					case LESS_THAN:
 					case GREATER_THAN:
@@ -416,6 +476,21 @@ public class SybaseASESqlAstTranslator<T extends JdbcOperation> extends Abstract
 		}
 	}
 
+	public static boolean isLob(JdbcMappingContainer expressionType) {
+		return expressionType != null && expressionType.getJdbcTypeCount() == 1 && switch ( expressionType.getSingleJdbcMapping().getJdbcType().getDdlTypeCode() ) {
+			case SqlTypes.LONG32NVARCHAR,
+				SqlTypes.LONG32VARCHAR,
+				SqlTypes.LONGNVARCHAR,
+				SqlTypes.LONGVARCHAR,
+				SqlTypes.LONG32VARBINARY,
+				SqlTypes.LONGVARBINARY,
+				SqlTypes.CLOB,
+				SqlTypes.NCLOB,
+				SqlTypes.BLOB -> true;
+			default -> false;
+		};
+	}
+
 	@Override
 	protected boolean supportsIntersect() {
 		// At least the version that

hibernate-core/src/main/java/org/hibernate/dialect/SybaseSqlAstTranslator.java

@@ -204,7 +204,7 @@ public class SybaseSqlAstTranslator<T extends JdbcOperation> extends AbstractSql
 		append( '(' );
 		visitValuesListEmulateSelectUnion( tableReference.getValuesList() );
 		append( ')' );
-		renderDerivedTableReference( tableReference );
+		renderDerivedTableReferenceIdentificationVariable( tableReference );
 	}
 
 	@Override

hibernate-core/src/main/java/org/hibernate/dialect/TiDBSqlAstTranslator.java

@@ -22,6 +22,7 @@ import org.hibernate.sql.ast.tree.expression.ColumnReference;
 import org.hibernate.sql.ast.tree.expression.Expression;
 import org.hibernate.sql.ast.tree.expression.Literal;
 import org.hibernate.sql.ast.tree.expression.Summarization;
+import org.hibernate.sql.ast.tree.from.DerivedTableReference;
 import org.hibernate.sql.ast.tree.from.NamedTableReference;
 import org.hibernate.sql.ast.tree.from.QueryPartTableReference;
 import org.hibernate.sql.ast.tree.from.ValuesTableReference;
@@ -249,6 +250,11 @@ public class TiDBSqlAstTranslator<T extends JdbcOperation> extends AbstractSqlAs
 		emulateQueryPartTableReferenceColumnAliasing( tableReference );
 	}
 
+	@Override
+	protected void renderDerivedTableReferenceIdentificationVariable(DerivedTableReference tableReference) {
+		renderTableReferenceIdentificationVariable( tableReference );
+	}
+
 	@Override
 	public void visitOffsetFetchClause(QueryPart queryPart) {
 		if ( !isRowNumberingCurrentQueryPart() ) {

hibernate-core/src/main/java/org/hibernate/dialect/XmlHelper.java

@@ -15,6 +15,8 @@ import java.util.Base64;
 import java.util.List;
 
 import org.hibernate.Internal;
+import org.hibernate.engine.spi.LazySessionWrapperOptions;
+import org.hibernate.engine.spi.SessionFactoryImplementor;
 import org.hibernate.internal.util.CharSequenceHelper;
 import org.hibernate.metamodel.mapping.EmbeddableMappingType;
 import org.hibernate.metamodel.mapping.JdbcMapping;
@@ -24,6 +26,7 @@ import org.hibernate.metamodel.mapping.internal.EmbeddedAttributeMapping;
 import org.hibernate.sql.ast.spi.SqlAppender;
 import org.hibernate.type.SqlTypes;
 import org.hibernate.type.descriptor.WrapperOptions;
+import org.hibernate.type.descriptor.java.BasicPluralJavaType;
 import org.hibernate.type.descriptor.java.IntegerJavaType;
 import org.hibernate.type.descriptor.java.JavaType;
 import org.hibernate.type.descriptor.java.JdbcDateJavaType;
@@ -32,6 +35,8 @@ import org.hibernate.type.descriptor.java.JdbcTimestampJavaType;
 import org.hibernate.type.descriptor.java.OffsetDateTimeJavaType;
 import org.hibernate.type.descriptor.jdbc.AggregateJdbcType;
 
+import static java.lang.Character.isLetter;
+import static java.lang.Character.isLetterOrDigit;
 import static org.hibernate.dialect.StructHelper.getEmbeddedPart;
 import static org.hibernate.dialect.StructHelper.instantiate;
 
@@ -486,7 +491,6 @@ public class XmlHelper {
 			WrapperOptions options,
 			XMLAppender sb) {
 		final Object[] array = embeddableMappingType.getValues( value );
-		final int numberOfAttributes = embeddableMappingType.getNumberOfAttributeMappings();
 		for ( int i = 0; i < array.length; i++ ) {
 			if ( array[i] == null ) {
 				continue;
@@ -646,6 +650,28 @@ public class XmlHelper {
 		return selectableIndex;
 	}
 
+	public static boolean isValidXmlName(String name) {
+		if ( name.isEmpty()
+				|| !isValidXmlNameStart( name.charAt( 0 ) )
+				|| name.regionMatches( true, 0, "xml", 0, 3 ) ) {
+			return false;
+		}
+		for ( int i = 1; i < name.length(); i++ ) {
+			if ( !isValidXmlNameChar( name.charAt( i ) ) ) {
+				return false;
+			}
+		}
+		return true;
+	}
+
+	public static boolean isValidXmlNameStart(char c) {
+		return isLetter( c ) || c == '_' || c == ':';
+	}
+
+	public static boolean isValidXmlNameChar(char c) {
+		return isLetterOrDigit( c ) || c == '_' || c == ':' || c == '-' || c == '.';
+	}
+
 	private static class XMLAppender extends OutputStream implements SqlAppender {
 
 		private final static char[] HEX_ARRAY = "0123456789ABCDEF".toCharArray();
@@ -781,4 +807,47 @@ public class XmlHelper {
 		}
 	}
 
+	public static CollectionTags determineCollectionTags(BasicPluralJavaType<?> pluralJavaType, SessionFactoryImplementor sessionFactory) {
+		//noinspection unchecked
+		final JavaType<Object> javaType = (JavaType<Object>) pluralJavaType;
+		final LazySessionWrapperOptions lazySessionWrapperOptions = new LazySessionWrapperOptions( sessionFactory );
+		// Produce the XML string for a collection with a null element to find out the root and element tag names
+		final String nullElementXml;
+		try {
+			nullElementXml = sessionFactory.getSessionFactoryOptions().getXmlFormatMapper().toString(
+					javaType.fromString( "{null}" ),
+					javaType,
+					lazySessionWrapperOptions
+			);
+		}
+		finally {
+			lazySessionWrapperOptions.cleanup();
+		}
+
+		// There must be an end tag for the root, so find that first
+		final int rootCloseTagPosition = nullElementXml.lastIndexOf( '<' );
+		assert nullElementXml.charAt( rootCloseTagPosition + 1 ) == '/';
+		final int rootNameStart = rootCloseTagPosition + 2;
+		final int rootCloseTagEnd = nullElementXml.indexOf( '>', rootCloseTagPosition );
+		final String rootTag = nullElementXml.substring( rootNameStart, rootCloseTagEnd );
+
+		// Then search for the open tag of the root and determine the start of the first item
+		final int itemTagStart = nullElementXml.indexOf(
+				'<',
+				nullElementXml.indexOf( "<" + rootTag + ">" ) + rootTag.length() + 2
+		);
+		final int itemNameStart = itemTagStart + 1;
+		int itemNameEnd = itemNameStart;
+		for ( int i = itemNameStart + 1; i < nullElementXml.length(); i++ ) {
+			if ( !isValidXmlNameChar( nullElementXml.charAt( i ) ) ) {
+				itemNameEnd = i;
+				break;
+			}
+		}
+		final String elementNodeName = nullElementXml.substring( itemNameStart, itemNameEnd );
+		return new CollectionTags( rootTag, elementNodeName );
+	}
+
+	public record CollectionTags(String rootName, String elementName) {}
+
 }

hibernate-core/src/main/java/org/hibernate/dialect/aggregate/AggregateSupport.java

@@ -13,6 +13,8 @@ import org.hibernate.dialect.Dialect;
 import org.hibernate.mapping.AggregateColumn;
 import org.hibernate.mapping.Column;
 import org.hibernate.metamodel.mapping.SelectableMapping;
+import org.hibernate.metamodel.mapping.SqlTypedMapping;
+import org.hibernate.metamodel.mapping.internal.SqlTypedMappingImpl;
 import org.hibernate.sql.ast.SqlAstTranslator;
 import org.hibernate.sql.ast.spi.SqlAppender;
 import org.hibernate.sql.ast.tree.expression.Expression;
@@ -39,13 +41,51 @@ public interface AggregateSupport {
 	 * @param aggregateColumn The type information for the aggregate column
 	 * @param column The column within the aggregate type, for which to return the read expression
 	 */
-	String aggregateComponentCustomReadExpression(
+	default String aggregateComponentCustomReadExpression(
 			String template,
 			String placeholder,
 			String aggregateParentReadExpression,
 			String columnExpression,
 			AggregateColumn aggregateColumn,
-			Column column);
+			Column column) {
+		return aggregateComponentCustomReadExpression(
+				template,
+				placeholder,
+				aggregateParentReadExpression,
+				columnExpression,
+				aggregateColumn.getTypeCode(),
+				new SqlTypedMappingImpl(
+						column.getTypeName(),
+						column.getLength(),
+						column.getPrecision(),
+						column.getScale(),
+						column.getTemporalPrecision(),
+						column.getType()
+				)
+		);
+	}
+
+	/**
+	 * Returns the custom read expression to use for {@code column}.
+	 * Replaces the given {@code placeholder} in the given {@code template}
+	 * by the custom read expression to use for {@code column}.
+	 *
+	 * @param template The custom read expression template of the column
+	 * @param placeholder The placeholder to replace with the actual read expression
+	 * @param aggregateParentReadExpression The expression to the aggregate column, which contains the column
+	 * @param columnExpression The column within the aggregate type, for which to return the read expression
+	 * @param aggregateColumnTypeCode The SQL type code of the aggregate column
+	 * @param column The column within the aggregate type, for which to return the read expression
+	 *
+	 * @since 7.0
+	 */
+	String aggregateComponentCustomReadExpression(
+			String template,
+			String placeholder,
+			String aggregateParentReadExpression,
+			String columnExpression,
+			int aggregateColumnTypeCode,
+			SqlTypedMapping column);
 
 	/**
 	 * Returns the assignment expression to use for {@code column},

hibernate-core/src/main/java/org/hibernate/dialect/aggregate/AggregateSupportImpl.java

@@ -12,6 +12,7 @@ import org.hibernate.boot.model.relational.Namespace;
 import org.hibernate.mapping.AggregateColumn;
 import org.hibernate.mapping.Column;
 import org.hibernate.metamodel.mapping.SelectableMapping;
+import org.hibernate.metamodel.mapping.SqlTypedMapping;
 import org.hibernate.type.spi.TypeConfiguration;
 
 public class AggregateSupportImpl implements AggregateSupport {
@@ -19,13 +20,7 @@ public class AggregateSupportImpl implements AggregateSupport {
 	public static final AggregateSupport INSTANCE = new AggregateSupportImpl();
 
 	@Override
-	public String aggregateComponentCustomReadExpression(
+	public String aggregateComponentCustomReadExpression(String template, String placeholder, String aggregateParentReadExpression, String columnExpression, int aggregateColumnTypeCode, SqlTypedMapping column) {
-			String template,
-			String placeholder,
-			String aggregateParentReadExpression,
-			String columnExpression,
-			AggregateColumn aggregateColumn,
-			Column column) {
 		throw new UnsupportedOperationException( "Dialect does not support aggregateComponentCustomReadExpression: " + getClass().getName() );
 	}
 

hibernate-core/src/main/java/org/hibernate/dialect/aggregate/DB2AggregateSupport.java

@@ -26,6 +26,7 @@ import org.hibernate.metamodel.mapping.EmbeddableMappingType;
 import org.hibernate.metamodel.mapping.SelectableMapping;
 import org.hibernate.metamodel.mapping.SelectablePath;
 import org.hibernate.metamodel.mapping.SqlExpressible;
+import org.hibernate.metamodel.mapping.SqlTypedMapping;
 import org.hibernate.sql.ast.SqlAstNodeRenderingMode;
 import org.hibernate.sql.ast.SqlAstTranslator;
 import org.hibernate.sql.ast.spi.SqlAppender;
@@ -47,13 +48,13 @@ public class DB2AggregateSupport extends AggregateSupportImpl {
 			String placeholder,
 			String aggregateParentReadExpression,
 			String columnExpression,
-			AggregateColumn aggregateColumn,
+			int aggregateColumnTypeCode,
-			Column column) {
+			SqlTypedMapping column) {
-		switch ( aggregateColumn.getTypeCode() ) {
+		switch ( aggregateColumnTypeCode ) {
 			case STRUCT:
 				return template.replace( placeholder, aggregateParentReadExpression + ".." + columnExpression );
 		}
-		throw new IllegalArgumentException( "Unsupported aggregate SQL type: " + aggregateColumn.getTypeCode() );
+		throw new IllegalArgumentException( "Unsupported aggregate SQL type: " + aggregateColumnTypeCode );
 	}
 
 	@Override

hibernate-core/src/main/java/org/hibernate/dialect/aggregate/OracleAggregateSupport.java

@@ -24,6 +24,7 @@ import org.hibernate.metamodel.mapping.EmbeddableMappingType;
 import org.hibernate.metamodel.mapping.JdbcMapping;
 import org.hibernate.metamodel.mapping.SelectableMapping;
 import org.hibernate.metamodel.mapping.SelectablePath;
+import org.hibernate.metamodel.mapping.SqlTypedMapping;
 import org.hibernate.sql.ast.SqlAstNodeRenderingMode;
 import org.hibernate.sql.ast.SqlAstTranslator;
 import org.hibernate.sql.ast.spi.AbstractSqlAstTranslator;
@@ -113,9 +114,9 @@ public class OracleAggregateSupport extends AggregateSupportImpl {
 			String placeholder,
 			String aggregateParentReadExpression,
 			String columnExpression,
-			AggregateColumn aggregateColumn,
+			int aggregateColumnTypeCode,
-			Column column) {
+			SqlTypedMapping column) {
-		switch ( aggregateColumn.getTypeCode() ) {
+		switch ( aggregateColumnTypeCode ) {
 			case JSON:
 				String jsonTypeName = "json";
 				switch ( jsonSupport ) {
@@ -132,14 +133,14 @@ public class OracleAggregateSupport extends AggregateSupportImpl {
 						else {
 							parentPartExpression = aggregateParentReadExpression + ",'$.";
 						}
-						switch ( column.getTypeCode() ) {
+						switch ( column.getJdbcMapping().getJdbcType().getDefaultSqlTypeCode() ) {
 							case BIT:
 								return template.replace(
 										placeholder,
 										"decode(json_value(" + parentPartExpression + columnExpression + "'),'true',1,'false',0,null)"
 								);
 							case BOOLEAN:
-								if ( column.getTypeName().toLowerCase( Locale.ROOT ).trim().startsWith( "number" ) ) {
+								if ( column.getColumnDefinition().toLowerCase( Locale.ROOT ).trim().startsWith( "number" ) ) {
 									return template.replace(
 											placeholder,
 											"decode(json_value(" + parentPartExpression + columnExpression + "'),'true',1,'false',0,null)"
@@ -152,7 +153,7 @@ public class OracleAggregateSupport extends AggregateSupportImpl {
 							case BIGINT:
 								return template.replace(
 										placeholder,
-										"json_value(" + parentPartExpression + columnExpression + "' returning " + column.getTypeName() + ')'
+										"json_value(" + parentPartExpression + columnExpression + "' returning " + column.getColumnDefinition() + ')'
 								);
 							case DATE:
 								return template.replace(
@@ -189,10 +190,10 @@ public class OracleAggregateSupport extends AggregateSupportImpl {
 								// We encode binary data as hex, so we have to decode here
 								return template.replace(
 										placeholder,
-										"(select * from json_table(" + aggregateParentReadExpression + ",'$' columns (" + columnExpression + " " + column.getTypeName() + " path '$." + columnExpression + "')))"
+										"(select * from json_table(" + aggregateParentReadExpression + ",'$' columns (" + columnExpression + " " + column.getColumnDefinition() + " path '$." + columnExpression + "')))"
 								);
 							case ARRAY:
-								final BasicPluralType<?, ?> pluralType = (BasicPluralType<?, ?>) column.getValue().getType();
+								final BasicPluralType<?, ?> pluralType = (BasicPluralType<?, ?>) column.getJdbcMapping();
 								final OracleArrayJdbcType jdbcType = (OracleArrayJdbcType) pluralType.getJdbcType();
 								switch ( jdbcType.getElementJdbcType().getDefaultSqlTypeCode() ) {
 									case BOOLEAN:
@@ -211,7 +212,7 @@ public class OracleAggregateSupport extends AggregateSupportImpl {
 									default:
 										return template.replace(
 												placeholder,
-												"json_value(" + parentPartExpression + columnExpression + "' returning " + column.getTypeName() + ')'
+												"json_value(" + parentPartExpression + columnExpression + "' returning " + column.getColumnDefinition() + ')'
 										);
 								}
 							case JSON:
@@ -222,7 +223,7 @@ public class OracleAggregateSupport extends AggregateSupportImpl {
 							default:
 								return template.replace(
 										placeholder,
-										"cast(json_value(" + parentPartExpression + columnExpression + "') as " + column.getTypeName() + ')'
+										"cast(json_value(" + parentPartExpression + columnExpression + "') as " + column.getColumnDefinition() + ')'
 								);
 						}
 					case NONE:
@@ -233,7 +234,7 @@ public class OracleAggregateSupport extends AggregateSupportImpl {
 			case STRUCT_TABLE:
 				return template.replace( placeholder, aggregateParentReadExpression + "." + columnExpression );
 		}
-		throw new IllegalArgumentException( "Unsupported aggregate SQL type: " + aggregateColumn.getTypeCode() );
+		throw new IllegalArgumentException( "Unsupported aggregate SQL type: " + aggregateColumnTypeCode );
 	}
 
 	@Override

hibernate-core/src/main/java/org/hibernate/dialect/aggregate/PostgreSQLAggregateSupport.java

@@ -14,6 +14,7 @@ import org.hibernate.mapping.Column;
 import org.hibernate.metamodel.mapping.JdbcMapping;
 import org.hibernate.metamodel.mapping.SelectableMapping;
 import org.hibernate.metamodel.mapping.SelectablePath;
+import org.hibernate.metamodel.mapping.SqlTypedMapping;
 import org.hibernate.sql.ast.SqlAstNodeRenderingMode;
 import org.hibernate.sql.ast.SqlAstTranslator;
 import org.hibernate.sql.ast.spi.SqlAppender;
@@ -51,12 +52,12 @@ public class PostgreSQLAggregateSupport extends AggregateSupportImpl {
 			String placeholder,
 			String aggregateParentReadExpression,
 			String columnExpression,
-			AggregateColumn aggregateColumn,
+			int aggregateColumnTypeCode,
-			Column column) {
+			SqlTypedMapping column) {
-		switch ( aggregateColumn.getTypeCode() ) {
+		switch ( aggregateColumnTypeCode ) {
 			case JSON_ARRAY:
 			case JSON:
-				switch ( column.getTypeCode() ) {
+				switch ( column.getJdbcMapping().getJdbcType().getDefaultSqlTypeCode() ) {
 					case JSON:
 						return template.replace(
 								placeholder,
@@ -71,7 +72,7 @@ public class PostgreSQLAggregateSupport extends AggregateSupportImpl {
 								"decode(" + aggregateParentReadExpression + "->>'" + columnExpression + "','hex')"
 						);
 					case ARRAY:
-						final BasicPluralType<?, ?> pluralType = (BasicPluralType<?, ?>) column.getValue().getType();
+						final BasicPluralType<?, ?> pluralType = (BasicPluralType<?, ?>) column.getJdbcMapping();
 						switch ( pluralType.getElementType().getJdbcType().getDefaultSqlTypeCode() ) {
 							case BOOLEAN:
 							case TINYINT:
@@ -85,7 +86,7 @@ public class PostgreSQLAggregateSupport extends AggregateSupportImpl {
 								// because casting a jsonb[] to text[] will not omit the quotes of the jsonb text values
 								return template.replace(
 										placeholder,
-										"cast(array(select jsonb_array_elements(" + aggregateParentReadExpression + "->'" + columnExpression + "')) as " + column.getTypeName() + ')'
+										"cast(array(select jsonb_array_elements(" + aggregateParentReadExpression + "->'" + columnExpression + "')) as " + column.getColumnDefinition() + ')'
 								);
 							case BINARY:
 							case VARBINARY:
@@ -98,13 +99,13 @@ public class PostgreSQLAggregateSupport extends AggregateSupportImpl {
 							default:
 								return template.replace(
 										placeholder,
-										"cast(array(select jsonb_array_elements_text(" + aggregateParentReadExpression + "->'" + columnExpression + "')) as " + column.getTypeName() + ')'
+										"cast(array(select jsonb_array_elements_text(" + aggregateParentReadExpression + "->'" + columnExpression + "')) as " + column.getColumnDefinition() + ')'
 								);
 						}
 					default:
 						return template.replace(
 								placeholder,
-								"cast(" + aggregateParentReadExpression + "->>'" + columnExpression + "' as " + column.getTypeName() + ')'
+								"cast(" + aggregateParentReadExpression + "->>'" + columnExpression + "' as " + column.getColumnDefinition() + ')'
 						);
 				}
 			case STRUCT:
@@ -112,7 +113,7 @@ public class PostgreSQLAggregateSupport extends AggregateSupportImpl {
 			case STRUCT_TABLE:
 				return template.replace( placeholder, '(' + aggregateParentReadExpression + ")." + columnExpression );
 		}
-		throw new IllegalArgumentException( "Unsupported aggregate SQL type: " + aggregateColumn.getTypeCode() );
+		throw new IllegalArgumentException( "Unsupported aggregate SQL type: " + aggregateColumnTypeCode );
 	}
 
 	private static String jsonCustomWriteExpression(String customWriteExpression, JdbcMapping jdbcMapping) {

hibernate-core/src/main/java/org/hibernate/dialect/function/CommonFunctionFactory.java

@@ -7,75 +7,11 @@ package org.hibernate.dialect.function;
 import java.util.Date;
 import java.util.Arrays;
 
+import org.checkerframework.checker.nullness.qual.Nullable;
 import org.hibernate.boot.model.FunctionContributions;
 import org.hibernate.dialect.Dialect;
 
-import org.hibernate.dialect.function.array.ArrayAggFunction;
+import org.hibernate.dialect.function.array.*;
-import org.hibernate.dialect.function.array.ArrayAndElementArgumentTypeResolver;
-import org.hibernate.dialect.function.array.ArrayAndElementArgumentValidator;
-import org.hibernate.dialect.function.array.ArrayArgumentValidator;
-import org.hibernate.dialect.function.array.ArrayConcatElementFunction;
-import org.hibernate.dialect.function.array.ArrayConcatFunction;
-import org.hibernate.dialect.function.array.ArrayConstructorFunction;
-import org.hibernate.dialect.function.array.ArrayContainsOperatorFunction;
-import org.hibernate.dialect.function.array.ArrayContainsUnnestFunction;
-import org.hibernate.dialect.function.array.ArrayIncludesOperatorFunction;
-import org.hibernate.dialect.function.array.ArrayIncludesUnnestFunction;
-import org.hibernate.dialect.function.array.ArrayIntersectsOperatorFunction;
-import org.hibernate.dialect.function.array.ArrayIntersectsUnnestFunction;
-import org.hibernate.dialect.function.array.ArrayGetUnnestFunction;
-import org.hibernate.dialect.function.array.ArrayRemoveIndexUnnestFunction;
-import org.hibernate.dialect.function.array.ArrayReplaceUnnestFunction;
-import org.hibernate.dialect.function.array.ArraySetUnnestFunction;
-import org.hibernate.dialect.function.array.ArraySliceUnnestFunction;
-import org.hibernate.dialect.function.array.ArrayToStringFunction;
-import org.hibernate.dialect.function.array.ArrayViaArgumentReturnTypeResolver;
-import org.hibernate.dialect.function.array.CockroachArrayFillFunction;
-import org.hibernate.dialect.function.array.ElementViaArrayArgumentReturnTypeResolver;
-import org.hibernate.dialect.function.array.H2ArrayContainsFunction;
-import org.hibernate.dialect.function.array.H2ArrayFillFunction;
-import org.hibernate.dialect.function.array.H2ArrayIncludesFunction;
-import org.hibernate.dialect.function.array.H2ArrayIntersectsFunction;
-import org.hibernate.dialect.function.array.H2ArrayPositionFunction;
-import org.hibernate.dialect.function.array.H2ArrayPositionsFunction;
-import org.hibernate.dialect.function.array.H2ArrayRemoveFunction;
-import org.hibernate.dialect.function.array.H2ArrayRemoveIndexFunction;
-import org.hibernate.dialect.function.array.H2ArrayReplaceFunction;
-import org.hibernate.dialect.function.array.H2ArraySetFunction;
-import org.hibernate.dialect.function.array.H2ArrayToStringFunction;
-import org.hibernate.dialect.function.array.HSQLArrayConstructorFunction;
-import org.hibernate.dialect.function.array.HSQLArrayFillFunction;
-import org.hibernate.dialect.function.array.HSQLArrayPositionFunction;
-import org.hibernate.dialect.function.array.HSQLArrayPositionsFunction;
-import org.hibernate.dialect.function.array.HSQLArrayRemoveFunction;
-import org.hibernate.dialect.function.array.HSQLArraySetFunction;
-import org.hibernate.dialect.function.array.HSQLArrayToStringFunction;
-import org.hibernate.dialect.function.array.OracleArrayConcatElementFunction;
-import org.hibernate.dialect.function.array.OracleArrayConcatFunction;
-import org.hibernate.dialect.function.array.OracleArrayFillFunction;
-import org.hibernate.dialect.function.array.OracleArrayIncludesFunction;
-import org.hibernate.dialect.function.array.OracleArrayIntersectsFunction;
-import org.hibernate.dialect.function.array.OracleArrayGetFunction;
-import org.hibernate.dialect.function.array.OracleArrayLengthFunction;
-import org.hibernate.dialect.function.array.OracleArrayPositionFunction;
-import org.hibernate.dialect.function.array.OracleArrayPositionsFunction;
-import org.hibernate.dialect.function.array.OracleArrayRemoveFunction;
-import org.hibernate.dialect.function.array.OracleArrayRemoveIndexFunction;
-import org.hibernate.dialect.function.array.OracleArrayReplaceFunction;
-import org.hibernate.dialect.function.array.OracleArraySetFunction;
-import org.hibernate.dialect.function.array.OracleArraySliceFunction;
-import org.hibernate.dialect.function.array.OracleArrayToStringFunction;
-import org.hibernate.dialect.function.array.OracleArrayTrimFunction;
-import org.hibernate.dialect.function.array.PostgreSQLArrayConcatElementFunction;
-import org.hibernate.dialect.function.array.PostgreSQLArrayConcatFunction;
-import org.hibernate.dialect.function.array.PostgreSQLArrayFillFunction;
-import org.hibernate.dialect.function.array.PostgreSQLArrayPositionFunction;
-import org.hibernate.dialect.function.array.PostgreSQLArrayConstructorFunction;
-import org.hibernate.dialect.function.array.OracleArrayAggEmulation;
-import org.hibernate.dialect.function.array.OracleArrayConstructorFunction;
-import org.hibernate.dialect.function.array.OracleArrayContainsFunction;
-import org.hibernate.dialect.function.array.PostgreSQLArrayPositionsFunction;
-import org.hibernate.dialect.function.array.PostgreSQLArrayTrimEmulation;
 import org.hibernate.dialect.function.json.CockroachDBJsonExistsFunction;
 import org.hibernate.dialect.function.json.CockroachDBJsonQueryFunction;
 import org.hibernate.dialect.function.json.CockroachDBJsonRemoveFunction;
@@ -4294,4 +4230,61 @@ public class CommonFunctionFactory {
 	public void xmlagg_sqlserver() {
 		functionRegistry.register( "xmlagg", new SQLServerXmlAggFunction( typeConfiguration ) );
 	}
+
+	/**
+	 * Standard unnest() function
+	 */
+	public void unnest(@Nullable String defaultBasicArrayElementColumnName, String defaultIndexSelectionExpression) {
+		functionRegistry.register( "unnest", new UnnestFunction( defaultBasicArrayElementColumnName, defaultIndexSelectionExpression ) );
+	}
+
+	/**
+	 * Standard unnest() function for databases that don't support arrays natively
+	 */
+	public void unnest_emulated() {
+		// Pass an arbitrary value
+		unnest( "v", "i" );
+	}
+
+	/**
+	 * H2 unnest() function
+	 */
+	public void unnest_h2(int maxArraySize) {
+		functionRegistry.register( "unnest", new H2UnnestFunction( maxArraySize ) );
+	}
+
+	/**
+	 * Oracle unnest() function
+	 */
+	public void unnest_oracle() {
+		functionRegistry.register( "unnest", new OracleUnnestFunction() );
+	}
+
+	/**
+	 * PostgreSQL unnest() function
+	 */
+	public void unnest_postgresql() {
+		functionRegistry.register( "unnest", new PostgreSQLUnnestFunction() );
+	}
+
+	/**
+	 * SQL Server unnest() function
+	 */
+	public void unnest_sqlserver() {
+		functionRegistry.register( "unnest", new SQLServerUnnestFunction() );
+	}
+
+	/**
+	 * Sybase ASE unnest() function
+	 */
+	public void unnest_sybasease() {
+		functionRegistry.register( "unnest", new SybaseASEUnnestFunction() );
+	}
+
+	/**
+	 * HANA unnest() function
+	 */
+	public void unnest_hana() {
+		functionRegistry.register( "unnest", new HANAUnnestFunction() );
+	}
 }

hibernate-core/src/main/java/org/hibernate/dialect/function/UnnestSetReturningFunctionTypeResolver.java

@@ -0,0 +1,222 @@
+/*
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.dialect.function;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.checkerframework.checker.nullness.qual.Nullable;
+import org.hibernate.metamodel.mapping.AttributeMapping;
+import org.hibernate.metamodel.mapping.CollectionPart;
+import org.hibernate.metamodel.mapping.EmbeddableMappingType;
+import org.hibernate.metamodel.mapping.JdbcMappingContainer;
+import org.hibernate.metamodel.mapping.MappingType;
+import org.hibernate.metamodel.mapping.SelectableMapping;
+import org.hibernate.metamodel.mapping.SelectablePath;
+import org.hibernate.metamodel.mapping.SqlTypedMapping;
+import org.hibernate.metamodel.mapping.internal.SelectableMappingImpl;
+import org.hibernate.query.derived.AnonymousTupleType;
+import org.hibernate.query.sqm.SqmExpressible;
+import org.hibernate.query.sqm.produce.function.SetReturningFunctionTypeResolver;
+import org.hibernate.query.sqm.tree.SqmTypedNode;
+import org.hibernate.sql.ast.tree.SqlAstNode;
+import org.hibernate.sql.ast.tree.expression.Expression;
+import org.hibernate.type.BasicPluralType;
+import org.hibernate.type.BasicType;
+import org.hibernate.type.descriptor.jdbc.AggregateJdbcType;
+import org.hibernate.type.spi.TypeConfiguration;
+
+/**
+ *
+ * @since 7.0
+ */
+public class UnnestSetReturningFunctionTypeResolver implements SetReturningFunctionTypeResolver {
+
+	protected final @Nullable String defaultBasicArrayColumnName;
+	protected final String defaultIndexSelectionExpression;
+
+	public UnnestSetReturningFunctionTypeResolver(@Nullable String defaultBasicArrayColumnName, String defaultIndexSelectionExpression) {
+		this.defaultBasicArrayColumnName = defaultBasicArrayColumnName;
+		this.defaultIndexSelectionExpression = defaultIndexSelectionExpression;
+	}
+
+	@Override
+	public AnonymousTupleType<?> resolveTupleType(List<? extends SqmTypedNode<?>> arguments, TypeConfiguration typeConfiguration) {
+		final SqmTypedNode<?> arrayArgument = arguments.get( 0 );
+		final SqmExpressible<?> expressible = arrayArgument.getExpressible();
+		if ( expressible == null ) {
+			throw new IllegalArgumentException( "Couldn't determine array type of argument to function 'unnest'" );
+		}
+		if ( !( expressible.getSqmType() instanceof BasicPluralType<?,?> pluralType ) ) {
+			throw new IllegalArgumentException( "Argument passed to function 'unnest' is not a BasicPluralType. Found: " + expressible );
+		}
+
+		final BasicType<?> elementType = pluralType.getElementType();
+		final SqmExpressible<?>[] componentTypes;
+		final String[] componentNames;
+		if ( elementType.getJdbcType() instanceof AggregateJdbcType aggregateJdbcType
+			&& aggregateJdbcType.getEmbeddableMappingType() != null ) {
+			final EmbeddableMappingType embeddableMappingType = aggregateJdbcType.getEmbeddableMappingType();
+			componentTypes = determineComponentTypes( embeddableMappingType );
+			componentNames = new String[componentTypes.length];
+			final int numberOfAttributeMappings = embeddableMappingType.getNumberOfAttributeMappings();
+			int index = 0;
+			for ( int i = 0; i < numberOfAttributeMappings; i++ ) {
+				final AttributeMapping attributeMapping = embeddableMappingType.getAttributeMapping( i );
+				if ( attributeMapping.getMappedType() instanceof SqmExpressible<?> ) {
+					componentNames[index++] = attributeMapping.getAttributeName();
+				}
+			}
+			assert index == componentNames.length - 1;
+			componentTypes[index] = typeConfiguration.getBasicTypeForJavaType( Long.class );
+			componentNames[index] = CollectionPart.Nature.INDEX.getName();
+		}
+		else {
+			componentTypes = new SqmExpressible<?>[]{ elementType, typeConfiguration.getBasicTypeForJavaType( Long.class ) };
+			componentNames = new String[]{ CollectionPart.Nature.ELEMENT.getName(), CollectionPart.Nature.INDEX.getName() };
+		}
+		return new AnonymousTupleType<>( componentTypes, componentNames );
+	}
+
+	@Override
+	public SelectableMapping[] resolveFunctionReturnType(
+			List<? extends SqlAstNode> arguments,
+			String tableIdentifierVariable,
+			boolean withOrdinality,
+			TypeConfiguration typeConfiguration) {
+		final Expression expression = (Expression) arguments.get( 0 );
+		final JdbcMappingContainer expressionType = expression.getExpressionType();
+		if ( expressionType == null ) {
+			throw new IllegalArgumentException( "Couldn't determine array type of argument to function 'unnest'" );
+		}
+		if ( !( expressionType.getSingleJdbcMapping() instanceof BasicPluralType<?,?> pluralType ) ) {
+			throw new IllegalArgumentException( "Argument passed to function 'unnest' is not a BasicPluralType. Found: " + expressionType );
+		}
+
+		final SelectableMapping indexMapping = withOrdinality ? new SelectableMappingImpl(
+				"",
+				defaultIndexSelectionExpression,
+				new SelectablePath( CollectionPart.Nature.INDEX.getName() ),
+				null,
+				null,
+				null,
+				null,
+				null,
+				null,
+				null,
+				false,
+				false,
+				false,
+				false,
+				false,
+				false,
+				typeConfiguration.getBasicTypeForJavaType( Long.class )
+		) : null;
+
+		final BasicType<?> elementType = pluralType.getElementType();
+		final SelectableMapping[] returnType;
+		if ( elementType.getJdbcType() instanceof AggregateJdbcType aggregateJdbcType
+				&& aggregateJdbcType.getEmbeddableMappingType() != null ) {
+			final EmbeddableMappingType embeddableMappingType = aggregateJdbcType.getEmbeddableMappingType();
+			final int jdbcValueCount = embeddableMappingType.getJdbcValueCount();
+			returnType = new SelectableMapping[jdbcValueCount + (indexMapping == null ? 0 : 1)];
+			for ( int i = 0; i < jdbcValueCount; i++ ) {
+				final SelectableMapping selectableMapping = embeddableMappingType.getJdbcValueSelectable( i );
+				final String selectableName = selectableMapping.getSelectableName();
+				returnType[i] = new SelectableMappingImpl(
+						selectableMapping.getContainingTableExpression(),
+						selectableName,
+						new SelectablePath( selectableName ),
+						null,
+						null,
+						selectableMapping.getColumnDefinition(),
+						selectableMapping.getLength(),
+						selectableMapping.getPrecision(),
+						selectableMapping.getScale(),
+						selectableMapping.getTemporalPrecision(),
+						selectableMapping.isLob(),
+						true,
+						false,
+						false,
+						false,
+						selectableMapping.isFormula(),
+						selectableMapping.getJdbcMapping()
+				);
+				if ( indexMapping != null ) {
+					returnType[jdbcValueCount] = indexMapping;
+				}
+			}
+		}
+		else {
+			final String elementSelectionExpression = defaultBasicArrayColumnName == null
+					? tableIdentifierVariable
+					: defaultBasicArrayColumnName;
+			final SelectableMapping elementMapping;
+			if ( expressionType instanceof SqlTypedMapping typedMapping ) {
+				elementMapping = new SelectableMappingImpl(
+						"",
+						elementSelectionExpression,
+						new SelectablePath( CollectionPart.Nature.ELEMENT.getName() ),
+						null,
+						null,
+						typedMapping.getColumnDefinition(),
+						typedMapping.getLength(),
+						typedMapping.getPrecision(),
+						typedMapping.getScale(),
+						typedMapping.getTemporalPrecision(),
+						typedMapping.isLob(),
+						true,
+						false,
+						false,
+						false,
+						false,
+						elementType
+				);
+			}
+			else {
+				elementMapping = new SelectableMappingImpl(
+						"",
+						elementSelectionExpression,
+						new SelectablePath( CollectionPart.Nature.ELEMENT.getName() ),
+						null,
+						null,
+						null,
+						null,
+						null,
+						null,
+						null,
+						false,
+						true,
+						false,
+						false,
+						false,
+						false,
+						elementType
+				);
+			}
+			if ( indexMapping == null ) {
+				returnType = new SelectableMapping[]{ elementMapping };
+			}
+			else {
+				returnType = new SelectableMapping[] {elementMapping, indexMapping};
+			}
+		}
+		return returnType;
+	}
+
+	private static SqmExpressible<?>[] determineComponentTypes(EmbeddableMappingType embeddableMappingType) {
+		final int numberOfAttributeMappings = embeddableMappingType.getNumberOfAttributeMappings();
+		final ArrayList<SqmExpressible<?>> expressibles = new ArrayList<>( numberOfAttributeMappings + 1 );
+
+		for ( int i = 0; i < numberOfAttributeMappings; i++ ) {
+			final AttributeMapping attributeMapping = embeddableMappingType.getAttributeMapping( i );
+			final MappingType mappedType = attributeMapping.getMappedType();
+			if ( mappedType instanceof SqmExpressible<?> ) {
+				expressibles.add( (SqmExpressible<?>) mappedType );
+			}
+		}
+		return expressibles.toArray( new SqmExpressible<?>[expressibles.size() + 1] );
+	}
+}

hibernate-core/src/main/java/org/hibernate/dialect/function/array/H2UnnestFunction.java

@@ -0,0 +1,338 @@
+/*
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.dialect.function.array;
+
+import java.util.List;
+
+import org.hibernate.dialect.function.UnnestSetReturningFunctionTypeResolver;
+import org.hibernate.engine.spi.SessionFactoryImplementor;
+import org.hibernate.internal.util.NullnessUtil;
+import org.hibernate.metamodel.mapping.CollectionPart;
+import org.hibernate.metamodel.mapping.EmbeddableMappingType;
+import org.hibernate.metamodel.mapping.JdbcMappingContainer;
+import org.hibernate.metamodel.mapping.SelectableMapping;
+import org.hibernate.metamodel.mapping.SelectablePath;
+import org.hibernate.metamodel.mapping.SqlTypedMapping;
+import org.hibernate.metamodel.mapping.internal.SelectableMappingImpl;
+import org.hibernate.query.derived.AnonymousTupleTableGroupProducer;
+import org.hibernate.query.derived.AnonymousTupleType;
+import org.hibernate.query.spi.QueryEngine;
+import org.hibernate.query.sqm.ComparisonOperator;
+import org.hibernate.query.sqm.function.SelfRenderingSqmSetReturningFunction;
+import org.hibernate.query.sqm.sql.SqmToSqlAstConverter;
+import org.hibernate.query.sqm.tree.SqmTypedNode;
+import org.hibernate.spi.NavigablePath;
+import org.hibernate.sql.Template;
+import org.hibernate.sql.ast.SqlAstTranslator;
+import org.hibernate.sql.ast.spi.FromClauseAccess;
+import org.hibernate.sql.ast.spi.SqlAppender;
+import org.hibernate.sql.ast.tree.SqlAstNode;
+import org.hibernate.sql.ast.tree.expression.ColumnReference;
+import org.hibernate.sql.ast.tree.expression.Expression;
+import org.hibernate.sql.ast.tree.expression.SelfRenderingExpression;
+import org.hibernate.sql.ast.tree.from.FunctionTableGroup;
+import org.hibernate.sql.ast.tree.from.TableGroup;
+import org.hibernate.sql.ast.tree.from.TableGroupJoin;
+import org.hibernate.sql.ast.tree.predicate.ComparisonPredicate;
+import org.hibernate.type.BasicPluralType;
+import org.hibernate.type.BasicType;
+import org.hibernate.type.descriptor.jdbc.AggregateJdbcType;
+
+import org.checkerframework.checker.nullness.qual.Nullable;
+import org.hibernate.type.spi.TypeConfiguration;
+
+/**
+ * H2 unnest function.
+ * <p>
+ * H2 does not support "lateral" i.e. the use of a from node within another,
+ * but we can apply the same trick that we already applied everywhere else for H2,
+ * which is to join a sequence table to emulate array element rows
+ * and eliminate non-existing array elements by checking the index against array length.
+ * Finally, we rewrite the selection expressions to access the array by joined sequence index.
+ */
+public class H2UnnestFunction extends UnnestFunction {
+
+	private final int maximumArraySize;
+
+	public H2UnnestFunction(int maximumArraySize) {
+		super( new H2UnnestSetReturningFunctionTypeResolver() );
+		this.maximumArraySize = maximumArraySize;
+	}
+
+	@Override
+	protected <T> SelfRenderingSqmSetReturningFunction<T> generateSqmSetReturningFunctionExpression(
+			List<? extends SqmTypedNode<?>> arguments,
+			QueryEngine queryEngine) {
+		//noinspection unchecked
+		return new SelfRenderingSqmSetReturningFunction<>(
+				this,
+				this,
+				arguments,
+				getArgumentsValidator(),
+				getSetReturningTypeResolver(),
+				(AnonymousTupleType<T>) getSetReturningTypeResolver().resolveTupleType( arguments, queryEngine.getTypeConfiguration() ),
+				queryEngine.getCriteriaBuilder(),
+				getName()
+		) {
+			@Override
+			public TableGroup convertToSqlAst(
+					NavigablePath navigablePath,
+					String identifierVariable,
+					boolean lateral,
+					boolean canUseInnerJoins,
+					boolean withOrdinality,
+					SqmToSqlAstConverter walker) {
+				// Register a transformer that adds a join predicate "array_length(array) <= index"
+				final FunctionTableGroup functionTableGroup = (FunctionTableGroup) super.convertToSqlAst(
+						navigablePath,
+						identifierVariable,
+						lateral,
+						canUseInnerJoins,
+						withOrdinality,
+						walker
+				);
+				//noinspection unchecked
+				final List<SqlAstNode> sqlArguments = (List<SqlAstNode>) functionTableGroup.getPrimaryTableReference()
+						.getFunctionExpression()
+						.getArguments();
+				// Can only do this transformation if the argument is a column reference
+				final ColumnReference columnReference = ( (Expression) sqlArguments.get( 0 ) ).getColumnReference();
+				if ( columnReference != null ) {
+					final String tableQualifier = columnReference.getQualifier();
+					// Find the table group which the unnest argument refers to
+					final FromClauseAccess fromClauseAccess = walker.getFromClauseAccess();
+					final TableGroup sourceTableGroup =
+							fromClauseAccess.findTableGroupByIdentificationVariable( tableQualifier );
+					if ( sourceTableGroup != null ) {
+						// Register a query transformer to register a join predicate
+						walker.registerQueryTransformer( (cteContainer, querySpec, converter) -> {
+							final TableGroup parentTableGroup = querySpec.getFromClause().queryTableGroups(
+									tg -> tg.findTableGroupJoin( functionTableGroup ) == null ? null : tg
+							);
+							final TableGroupJoin join = parentTableGroup.findTableGroupJoin( functionTableGroup );
+							final BasicType<Integer> integerType = walker.getCreationContext()
+									.getSessionFactory()
+									.getNodeBuilder()
+									.getIntegerType();
+							final Expression lhs = new SelfRenderingExpression() {
+								@Override
+								public void renderToSql(
+										SqlAppender sqlAppender,
+										SqlAstTranslator<?> walker,
+										SessionFactoryImplementor sessionFactory) {
+									sqlAppender.append( "coalesce(array_length(" );
+									columnReference.accept( walker );
+									sqlAppender.append( "),0)" );
+								}
+
+								@Override
+								public JdbcMappingContainer getExpressionType() {
+									return integerType;
+								}
+							};
+							final Expression rhs = new ColumnReference(
+									functionTableGroup.getPrimaryTableReference().getIdentificationVariable(),
+									// The default column name for the system_range function
+									"x",
+									false,
+									null,
+									integerType
+							);
+							join.applyPredicate( new ComparisonPredicate( lhs, ComparisonOperator.GREATER_THAN_OR_EQUAL, rhs ) );
+							return querySpec;
+						} );
+					}
+				}
+				return functionTableGroup;
+			}
+		};
+	}
+
+	@Override
+	protected void renderJsonTable(
+			SqlAppender sqlAppender,
+			Expression array,
+			BasicPluralType<?, ?> pluralType,
+			@Nullable SqlTypedMapping sqlTypedMapping,
+			AnonymousTupleTableGroupProducer tupleType,
+			String tableIdentifierVariable,
+			SqlAstTranslator<?> walker) {
+		renderUnnest( sqlAppender, array, pluralType, sqlTypedMapping, tupleType, tableIdentifierVariable, walker );
+	}
+
+	@Override
+	protected void renderUnnest(
+			SqlAppender sqlAppender,
+			Expression array,
+			BasicPluralType<?, ?> pluralType,
+			@Nullable SqlTypedMapping sqlTypedMapping,
+			AnonymousTupleTableGroupProducer tupleType,
+			String tableIdentifierVariable,
+			SqlAstTranslator<?> walker) {
+		final ColumnReference columnReference = array.getColumnReference();
+		if ( columnReference != null ) {
+			sqlAppender.append( "system_range(1," );
+			sqlAppender.append( Integer.toString( maximumArraySize ) );
+			sqlAppender.append( ")" );
+		}
+		else {
+			super.renderUnnest( sqlAppender, array, pluralType, sqlTypedMapping, tupleType, tableIdentifierVariable, walker );
+		}
+	}
+
+	private static class H2UnnestSetReturningFunctionTypeResolver extends UnnestSetReturningFunctionTypeResolver {
+
+		public H2UnnestSetReturningFunctionTypeResolver() {
+			// c1 is the default column name for the "unnest()" function
+			super( "c1", "nord" );
+		}
+
+		@Override
+		public SelectableMapping[] resolveFunctionReturnType(
+				List<? extends SqlAstNode> arguments,
+				String tableIdentifierVariable,
+				boolean withOrdinality,
+				TypeConfiguration typeConfiguration) {
+			final Expression expression = (Expression) arguments.get( 0 );
+			final JdbcMappingContainer expressionType = expression.getExpressionType();
+			if ( expressionType == null ) {
+				throw new IllegalArgumentException( "Couldn't determine array type of argument to function 'unnest'" );
+			}
+			if ( !( expressionType.getSingleJdbcMapping() instanceof BasicPluralType<?,?> pluralType ) ) {
+				throw new IllegalArgumentException( "Argument passed to function 'unnest' is not a BasicPluralType. Found: " + expressionType );
+			}
+
+			final SelectableMapping indexMapping = withOrdinality ? new SelectableMappingImpl(
+					"",
+					expression.getColumnReference() != null ? "x" : defaultIndexSelectionExpression,
+					new SelectablePath( CollectionPart.Nature.INDEX.getName() ),
+					null,
+					null,
+					null,
+					null,
+					null,
+					null,
+					null,
+					false,
+					false,
+					false,
+					false,
+					false,
+					false,
+					typeConfiguration.getBasicTypeForJavaType( Long.class )
+			) : null;
+
+			final BasicType<?> elementType = pluralType.getElementType();
+			final SelectableMapping[] returnType;
+			if ( elementType.getJdbcType() instanceof AggregateJdbcType aggregateJdbcType
+					&& aggregateJdbcType.getEmbeddableMappingType() != null ) {
+				final ColumnReference arrayColumnReference = expression.getColumnReference();
+				if ( arrayColumnReference == null ) {
+					throw new IllegalArgumentException( "Argument passed to function 'unnest' is not a column reference, but an aggregate type, which is not yet supported." );
+				}
+				// For column references we render an emulation through system_range(),
+				// so we need to render an array access to get to the element
+				final String elementReadExpression = "array_get(" + arrayColumnReference.getExpressionText() + "," + Template.TEMPLATE + ".x)";
+				final String arrayReadExpression = NullnessUtil.castNonNull( arrayColumnReference.getReadExpression() );
+				final EmbeddableMappingType embeddableMappingType = aggregateJdbcType.getEmbeddableMappingType();
+				final int jdbcValueCount = embeddableMappingType.getJdbcValueCount();
+				returnType = new SelectableMapping[jdbcValueCount + (indexMapping == null ? 0 : 1)];
+				for ( int i = 0; i < jdbcValueCount; i++ ) {
+					final SelectableMapping selectableMapping = embeddableMappingType.getJdbcValueSelectable( i );
+					// The array expression has to be replaced with the actual array_get read expression in this emulation
+					final String customReadExpression = selectableMapping.getCustomReadExpression()
+							.replace( arrayReadExpression, elementReadExpression );
+					returnType[i] = new SelectableMappingImpl(
+							selectableMapping.getContainingTableExpression(),
+							selectableMapping.getSelectablePath().getSelectableName(),
+							new SelectablePath( selectableMapping.getSelectablePath().getSelectableName() ),
+							customReadExpression,
+							selectableMapping.getCustomWriteExpression(),
+							selectableMapping.getColumnDefinition(),
+							selectableMapping.getLength(),
+							selectableMapping.getPrecision(),
+							selectableMapping.getScale(),
+							selectableMapping.getTemporalPrecision(),
+							selectableMapping.isLob(),
+							true,
+							false,
+							false,
+							false,
+							selectableMapping.isFormula(),
+							selectableMapping.getJdbcMapping()
+					);
+				}
+				if ( indexMapping != null ) {
+					returnType[jdbcValueCount] = indexMapping;
+				}
+			}
+			else {
+				final String elementSelectionExpression;
+				final String elementReadExpression;
+				final ColumnReference columnReference = expression.getColumnReference();
+				if ( columnReference != null ) {
+					// For column references we render an emulation through system_range(),
+					// so we need to render an array access to get to the element
+					elementSelectionExpression = columnReference.getColumnExpression();
+					elementReadExpression = "array_get(" + columnReference.getExpressionText() + "," + Template.TEMPLATE + ".x)";
+				}
+				else {
+					elementSelectionExpression = defaultBasicArrayColumnName;
+					elementReadExpression = null;
+				}
+				final SelectableMapping elementMapping;
+				if ( expressionType instanceof SqlTypedMapping typedMapping ) {
+					elementMapping = new SelectableMappingImpl(
+							"",
+							elementSelectionExpression,
+							new SelectablePath( CollectionPart.Nature.ELEMENT.getName() ),
+							elementReadExpression,
+							null,
+							typedMapping.getColumnDefinition(),
+							typedMapping.getLength(),
+							typedMapping.getPrecision(),
+							typedMapping.getScale(),
+							typedMapping.getTemporalPrecision(),
+							typedMapping.isLob(),
+							true,
+							false,
+							false,
+							false,
+							false,
+							elementType
+					);
+				}
+				else {
+					elementMapping = new SelectableMappingImpl(
+							"",
+							elementSelectionExpression,
+							new SelectablePath( CollectionPart.Nature.ELEMENT.getName() ),
+							elementReadExpression,
+							null,
+							null,
+							null,
+							null,
+							null,
+							null,
+							false,
+							true,
+							false,
+							false,
+							false,
+							false,
+							elementType
+					);
+				}
+				if ( indexMapping == null ) {
+					returnType = new SelectableMapping[]{ elementMapping };
+				}
+				else {
+					returnType = new SelectableMapping[] {elementMapping, indexMapping};
+				}
+			}
+			return returnType;
+		}
+	}
+}

hibernate-core/src/main/java/org/hibernate/dialect/function/array/HANAUnnestFunction.java

@@ -0,0 +1,533 @@
+/*
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.dialect.function.array;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Set;
+
+import org.hibernate.QueryException;
+import org.hibernate.dialect.XmlHelper;
+import org.hibernate.dialect.function.json.ExpressionTypeHelper;
+import org.hibernate.engine.jdbc.Size;
+import org.hibernate.engine.spi.SessionFactoryImplementor;
+import org.hibernate.metamodel.mapping.CollectionPart;
+import org.hibernate.metamodel.mapping.EmbeddableValuedModelPart;
+import org.hibernate.metamodel.mapping.EntityMappingType;
+import org.hibernate.metamodel.mapping.EntityValuedModelPart;
+import org.hibernate.metamodel.mapping.JdbcMapping;
+import org.hibernate.metamodel.mapping.JdbcMappingContainer;
+import org.hibernate.metamodel.mapping.ModelPartContainer;
+import org.hibernate.metamodel.mapping.PluralAttributeMapping;
+import org.hibernate.metamodel.mapping.SqlTypedMapping;
+import org.hibernate.metamodel.mapping.ValuedModelPart;
+import org.hibernate.metamodel.mapping.internal.EmbeddedCollectionPart;
+import org.hibernate.query.derived.AnonymousTupleTableGroupProducer;
+import org.hibernate.query.derived.AnonymousTupleType;
+import org.hibernate.query.spi.QueryEngine;
+import org.hibernate.query.sqm.ComparisonOperator;
+import org.hibernate.query.sqm.function.SelfRenderingSqmSetReturningFunction;
+import org.hibernate.query.sqm.sql.SqmToSqlAstConverter;
+import org.hibernate.query.sqm.tree.SqmTypedNode;
+import org.hibernate.spi.NavigablePath;
+import org.hibernate.sql.ast.SqlAstTranslator;
+import org.hibernate.sql.ast.internal.ColumnQualifierCollectorSqlAstWalker;
+import org.hibernate.sql.ast.spi.FromClauseAccess;
+import org.hibernate.sql.ast.spi.SqlAppender;
+import org.hibernate.sql.ast.tree.SqlAstNode;
+import org.hibernate.sql.ast.tree.cte.CteColumn;
+import org.hibernate.sql.ast.tree.cte.CteStatement;
+import org.hibernate.sql.ast.tree.cte.CteTable;
+import org.hibernate.sql.ast.tree.expression.ColumnReference;
+import org.hibernate.sql.ast.tree.expression.Expression;
+import org.hibernate.sql.ast.tree.expression.SelfRenderingExpression;
+import org.hibernate.sql.ast.tree.expression.SqlTuple;
+import org.hibernate.sql.ast.tree.from.FunctionTableGroup;
+import org.hibernate.sql.ast.tree.from.StandardTableGroup;
+import org.hibernate.sql.ast.tree.from.TableGroup;
+import org.hibernate.sql.ast.tree.from.TableGroupJoin;
+import org.hibernate.sql.ast.tree.from.TableGroupProducer;
+import org.hibernate.sql.ast.tree.predicate.ComparisonPredicate;
+import org.hibernate.sql.ast.tree.predicate.NullnessPredicate;
+import org.hibernate.sql.ast.tree.select.QuerySpec;
+import org.hibernate.sql.ast.tree.select.SelectStatement;
+import org.hibernate.sql.results.internal.SqlSelectionImpl;
+import org.hibernate.type.BasicPluralType;
+import org.hibernate.type.BasicType;
+import org.hibernate.type.Type;
+import org.hibernate.type.descriptor.java.BasicPluralJavaType;
+import org.hibernate.type.descriptor.sql.spi.DdlTypeRegistry;
+
+import org.checkerframework.checker.nullness.qual.Nullable;
+
+/**
+ * HANA unnest function.
+ */
+public class HANAUnnestFunction extends UnnestFunction {
+
+	public HANAUnnestFunction() {
+		super( "v", "i" );
+	}
+
+	@Override
+	protected <T> SelfRenderingSqmSetReturningFunction<T> generateSqmSetReturningFunctionExpression(
+			List<? extends SqmTypedNode<?>> arguments,
+			QueryEngine queryEngine) {
+		//noinspection unchecked
+		return new SelfRenderingSqmSetReturningFunction<>(
+				this,
+				this,
+				arguments,
+				getArgumentsValidator(),
+				getSetReturningTypeResolver(),
+				(AnonymousTupleType<T>) getSetReturningTypeResolver().resolveTupleType( arguments, queryEngine.getTypeConfiguration() ),
+				queryEngine.getCriteriaBuilder(),
+				getName()
+		) {
+			@Override
+			public TableGroup convertToSqlAst(
+					NavigablePath navigablePath,
+					String identifierVariable,
+					boolean lateral,
+					boolean canUseInnerJoins,
+					boolean withOrdinality,
+					SqmToSqlAstConverter walker) {
+				// SAP HANA only supports table column references i.e. `TABLE_NAME.COLUMN_NAME`
+				// or constants as arguments to xmltable/json_table, so it's impossible to do lateral joins.
+				// There is a nice trick we can apply to make this work though, which is to figure out
+				// the table group an expression belongs to and render a special CTE returning xml/json that can be joined.
+				// The xml/json of that CTE needs to be extended by table group primary key data,
+				// so we can join it later.
+				final FunctionTableGroup functionTableGroup = (FunctionTableGroup) super.convertToSqlAst(
+						navigablePath,
+						identifierVariable,
+						lateral,
+						canUseInnerJoins,
+						withOrdinality,
+						walker
+				);
+				//noinspection unchecked
+				final List<SqlAstNode> sqlArguments = (List<SqlAstNode>) functionTableGroup.getPrimaryTableReference()
+						.getFunctionExpression()
+						.getArguments();
+				final Expression argument = (Expression) sqlArguments.get( 0 );
+				final Set<String> qualifiers = ColumnQualifierCollectorSqlAstWalker.determineColumnQualifiers( argument );
+				// Can only do this transformation if the argument contains a single column reference qualifier
+				if ( qualifiers.size() == 1 ) {
+					final String tableQualifier = qualifiers.iterator().next();
+					// Find the table group which the unnest argument refers to
+					final FromClauseAccess fromClauseAccess = walker.getFromClauseAccess();
+					final TableGroup sourceTableGroup =
+							fromClauseAccess.findTableGroupByIdentificationVariable( tableQualifier );
+					if ( sourceTableGroup != null ) {
+						final List<ColumnInfo> idColumns = new ArrayList<>();
+						addIdColumns( sourceTableGroup.getModelPart(), idColumns );
+
+						// Register a query transformer to register the CTE and rewrite the array argument
+						walker.registerQueryTransformer( (cteContainer, querySpec, converter) -> {
+							// Determine a CTE name that is available
+							final String baseName = "_data";
+							String cteName;
+							int index = 0;
+							do {
+								cteName = baseName + ( index++ );
+							} while ( cteContainer.getCteStatement( cteName ) != null );
+
+							final TableGroup parentTableGroup = querySpec.getFromClause().queryTableGroups(
+									tg -> tg.findTableGroupJoin( functionTableGroup ) == null ? null : tg
+							);
+							final TableGroupJoin join = parentTableGroup.findTableGroupJoin( functionTableGroup );
+							final Expression lhs = createExpression( tableQualifier, idColumns );
+							final Expression rhs = createExpression(
+									functionTableGroup.getPrimaryTableReference().getIdentificationVariable(),
+									idColumns
+							);
+							join.applyPredicate( new ComparisonPredicate( lhs, ComparisonOperator.EQUAL, rhs ) );
+
+							final String tableName = cteName;
+							final List<CteColumn> cteColumns = List.of(
+									new CteColumn( "v", argument.getExpressionType().getSingleJdbcMapping() )
+							);
+							final QuerySpec cteQuery = new QuerySpec( false );
+							cteQuery.getFromClause().addRoot(
+									new StandardTableGroup(
+											true,
+											sourceTableGroup.getNavigablePath(),
+											(TableGroupProducer) sourceTableGroup.getModelPart(),
+											false,
+											null,
+											sourceTableGroup.findTableReference( tableQualifier ),
+											false,
+											null,
+											joinTableName -> false,
+											(joinTableName, tg) -> null,
+											null
+									)
+							);
+							final Expression wrapperExpression;
+							if ( ExpressionTypeHelper.isXml( argument ) ) {
+								wrapperExpression = new XmlWrapperExpression( idColumns, tableQualifier, argument );
+								// xmltable is allergic to null values and produces no result if one occurs,
+								// so we must filter them out
+								cteQuery.applyPredicate( new NullnessPredicate( argument, true ) );
+							}
+							else {
+								wrapperExpression = new JsonWrapperExpression( idColumns, tableQualifier, argument );
+							}
+							cteQuery.getSelectClause().addSqlSelection( new SqlSelectionImpl( wrapperExpression ) );
+							cteContainer.addCteStatement( new CteStatement(
+									new CteTable( tableName, cteColumns ),
+									new SelectStatement( cteQuery )
+							) );
+							sqlArguments.set( 0, new TableColumnReferenceExpression( argument, tableName, idColumns ) );
+							return querySpec;
+						} );
+					}
+				}
+				return functionTableGroup;
+			}
+
+			private Expression createExpression(String qualifier, List<ColumnInfo> idColumns) {
+				if ( idColumns.size() == 1 ) {
+					final ColumnInfo columnInfo = idColumns.get( 0 );
+					return new ColumnReference( qualifier, columnInfo.name(), false, null, columnInfo.jdbcMapping() );
+				}
+				else {
+					final ArrayList<Expression> expressions = new ArrayList<>( idColumns.size() );
+					for ( ColumnInfo columnInfo : idColumns ) {
+						expressions.add(
+								new ColumnReference(
+										qualifier,
+										columnInfo.name(),
+										false,
+										null,
+										columnInfo.jdbcMapping()
+								)
+						);
+					}
+					return new SqlTuple( expressions, null );
+				}
+			}
+
+			private void addIdColumns(ModelPartContainer modelPartContainer, List<ColumnInfo> idColumns) {
+				if ( modelPartContainer instanceof EntityValuedModelPart entityValuedModelPart ) {
+					addIdColumns( entityValuedModelPart.getEntityMappingType(), idColumns );
+				}
+				else if ( modelPartContainer instanceof PluralAttributeMapping pluralAttributeMapping ) {
+					addIdColumns( pluralAttributeMapping, idColumns );
+				}
+				else if ( modelPartContainer instanceof EmbeddableValuedModelPart embeddableModelPart ) {
+					addIdColumns( embeddableModelPart, idColumns );
+				}
+				else {
+					throw new QueryException( "Unsupported model part container: " + modelPartContainer );
+				}
+			}
+
+			private void addIdColumns(EmbeddableValuedModelPart embeddableModelPart, List<ColumnInfo> idColumns) {
+				if ( embeddableModelPart instanceof EmbeddedCollectionPart collectionPart ) {
+					addIdColumns( collectionPart.getCollectionAttribute(), idColumns );
+				}
+				else {
+					addIdColumns( embeddableModelPart.asAttributeMapping().getDeclaringType(), idColumns );
+				}
+			}
+
+			private void addIdColumns(PluralAttributeMapping pluralAttributeMapping, List<ColumnInfo> idColumns) {
+				final DdlTypeRegistry ddlTypeRegistry = pluralAttributeMapping.getCollectionDescriptor()
+						.getFactory()
+						.getTypeConfiguration()
+						.getDdlTypeRegistry();
+				addIdColumns( pluralAttributeMapping.getKeyDescriptor().getKeyPart(), ddlTypeRegistry, idColumns );
+			}
+
+			private void addIdColumns(EntityMappingType entityMappingType, List<ColumnInfo> idColumns) {
+				final DdlTypeRegistry ddlTypeRegistry = entityMappingType.getEntityPersister()
+						.getFactory()
+						.getTypeConfiguration()
+						.getDdlTypeRegistry();
+				addIdColumns( entityMappingType.getIdentifierMapping(), ddlTypeRegistry, idColumns );
+			}
+
+			private void addIdColumns(
+					ValuedModelPart modelPart,
+					DdlTypeRegistry ddlTypeRegistry,
+					List<ColumnInfo> idColumns) {
+				modelPart.forEachSelectable( (selectionIndex, selectableMapping) -> {
+					final JdbcMapping jdbcMapping = selectableMapping.getJdbcMapping().getSingleJdbcMapping();
+					idColumns.add( new ColumnInfo(
+							selectableMapping.getSelectionExpression(),
+							jdbcMapping,
+							ddlTypeRegistry.getTypeName(
+									jdbcMapping.getJdbcType().getDefaultSqlTypeCode(),
+									selectableMapping.toSize(),
+									(Type) jdbcMapping
+							)
+					) );
+				} );
+			}
+
+		};
+	}
+
+	record ColumnInfo(String name, JdbcMapping jdbcMapping, String ddlType) {}
+
+	static class TableColumnReferenceExpression implements SelfRenderingExpression {
+
+		private final Expression argument;
+		private final String tableName;
+		private final List<ColumnInfo> idColumns;
+
+		public TableColumnReferenceExpression(Expression argument, String tableName, List<ColumnInfo> idColumns) {
+			this.argument = argument;
+			this.tableName = tableName;
+			this.idColumns = idColumns;
+		}
+
+		@Override
+		public void renderToSql(
+				SqlAppender sqlAppender,
+				SqlAstTranslator<?> walker,
+				SessionFactoryImplementor sessionFactory) {
+			sqlAppender.appendSql( tableName );
+			sqlAppender.appendSql( ".v" );
+		}
+
+		@Override
+		public JdbcMappingContainer getExpressionType() {
+			return argument.getExpressionType();
+		}
+
+		public List<ColumnInfo> getIdColumns() {
+			return idColumns;
+		}
+	}
+
+	@Override
+	protected void renderXmlTable(
+			SqlAppender sqlAppender,
+			Expression array,
+			BasicPluralType<?, ?> pluralType,
+			@Nullable SqlTypedMapping sqlTypedMapping,
+			AnonymousTupleTableGroupProducer tupleType,
+			String tableIdentifierVariable,
+			SqlAstTranslator<?> walker) {
+		final XmlHelper.CollectionTags collectionTags = XmlHelper.determineCollectionTags(
+				(BasicPluralJavaType<?>) pluralType.getJavaTypeDescriptor(), walker.getSessionFactory()
+		);
+
+		sqlAppender.appendSql( "xmltable('/" );
+		sqlAppender.appendSql( collectionTags.rootName() );
+		sqlAppender.appendSql( '/' );
+		sqlAppender.appendSql( collectionTags.elementName() );
+		sqlAppender.appendSql( "' passing " );
+		array.accept( walker );
+		sqlAppender.appendSql( " columns" );
+		char separator = ' ';
+		final int offset;
+		if ( array instanceof TableColumnReferenceExpression expression ) {
+			offset = expression.getIdColumns().size();
+			for ( ColumnInfo columnInfo : expression.getIdColumns() ) {
+				sqlAppender.appendSql( separator );
+				sqlAppender.appendSql( columnInfo.name() );
+				sqlAppender.appendSql( ' ' );
+				sqlAppender.appendSql( columnInfo.ddlType() );
+				sqlAppender.appendSql( " path 'ancestor::" );
+				sqlAppender.appendSql( collectionTags.rootName() );
+				sqlAppender.appendSql( "/@" );
+				sqlAppender.appendSql( columnInfo.name() );
+				sqlAppender.appendSql( '\'' );
+				separator = ',';
+			}
+		}
+		else {
+			offset = 0;
+		}
+		if ( tupleType.findSubPart( CollectionPart.Nature.ELEMENT.getName(), null ) == null ) {
+			tupleType.forEachSelectable( offset, (selectionIndex, selectableMapping) -> {
+				if ( selectionIndex == 0 ) {
+					sqlAppender.append( ' ' );
+				}
+				else {
+					sqlAppender.append( ',' );
+				}
+				sqlAppender.append( selectableMapping.getSelectionExpression() );
+				if ( CollectionPart.Nature.INDEX.getName().equals( selectableMapping.getSelectableName() ) ) {
+					sqlAppender.append( " for ordinality" );
+				}
+				else {
+					sqlAppender.append( ' ' );
+					sqlAppender.append( getDdlType( selectableMapping, walker ) );
+					sqlAppender.appendSql( " path '" );
+					sqlAppender.appendSql( selectableMapping.getSelectableName() );
+					sqlAppender.appendSql( "'" );
+				}
+			} );
+		}
+		else {
+			tupleType.forEachSelectable( offset, (selectionIndex, selectableMapping) -> {
+				if ( selectionIndex == 0 ) {
+					sqlAppender.append( ' ' );
+				}
+				else {
+					sqlAppender.append( ',' );
+				}
+				sqlAppender.append( selectableMapping.getSelectionExpression() );
+				if ( CollectionPart.Nature.INDEX.getName().equals( selectableMapping.getSelectableName() ) ) {
+					sqlAppender.append( " for ordinality" );
+				}
+				else {
+					sqlAppender.append( ' ' );
+					sqlAppender.append( getDdlType( selectableMapping, walker ) );
+					sqlAppender.appendSql( " path '" );
+					sqlAppender.appendSql( "." );
+					sqlAppender.appendSql( "'" );
+				}
+			} );
+		}
+
+		sqlAppender.appendSql( ')' );
+	}
+
+	static class XmlWrapperExpression implements SelfRenderingExpression {
+		private final List<ColumnInfo> idColumns;
+		private final String tableQualifier;
+		private final Expression argument;
+
+		public XmlWrapperExpression(List<ColumnInfo> idColumns, String tableQualifier, Expression argument) {
+			this.idColumns = idColumns;
+			this.tableQualifier = tableQualifier;
+			this.argument = argument;
+		}
+
+		@Override
+		public void renderToSql(
+				SqlAppender sqlAppender,
+				SqlAstTranslator<?> walker,
+				SessionFactoryImplementor sessionFactory) {
+			final BasicPluralType<?, ?> pluralType = (BasicPluralType<?, ?>) argument.getExpressionType().getSingleJdbcMapping();
+			final XmlHelper.CollectionTags collectionTags = XmlHelper.determineCollectionTags(
+					(BasicPluralJavaType<?>) pluralType.getJavaTypeDescriptor(),
+					sessionFactory
+			);
+
+			// Produce a XML string e.g. <root id="1">...</root>
+			// which will contain the original XML as well as id column information for correlation
+			sqlAppender.appendSql( "trim('/>' from (select" );
+			char separator = ' ';
+			for ( ColumnInfo columnInfo : idColumns ) {
+				sqlAppender.appendSql( separator );
+				sqlAppender.appendSql( tableQualifier );
+				sqlAppender.appendSql( '.' );
+				sqlAppender.appendSql( columnInfo.name() );
+				sqlAppender.appendSql( ' ' );
+				sqlAppender.appendDoubleQuoteEscapedString( columnInfo.name() );
+				separator = ',';
+			}
+			sqlAppender.appendSql( " from sys.dummy for xml('root'='no','columnstyle'='attribute','rowname'='Strings','format'='no')))||" );
+			sqlAppender.appendSql( "substring(" );
+			argument.accept( walker );
+			sqlAppender.appendSql( ",locate('<" );
+			sqlAppender.appendSql( collectionTags.rootName() );
+			sqlAppender.appendSql( ">'," );
+			argument.accept( walker );
+			sqlAppender.appendSql( ")+" );
+			sqlAppender.appendSql( collectionTags.rootName().length() + 2 );
+			sqlAppender.appendSql( ",length(" );
+			argument.accept( walker );
+			sqlAppender.appendSql( "))" );
+		}
+
+		@Override
+		public JdbcMappingContainer getExpressionType() {
+			return argument.getExpressionType();
+		}
+	}
+
+	@Override
+	protected void renderJsonTable(
+			SqlAppender sqlAppender,
+			Expression array,
+			BasicPluralType<?, ?> pluralType,
+			@Nullable SqlTypedMapping sqlTypedMapping,
+			AnonymousTupleTableGroupProducer tupleType,
+			String tableIdentifierVariable,
+			SqlAstTranslator<?> walker) {
+		final BasicType<?> elementType = pluralType.getElementType();
+		final String columnType = walker.getSessionFactory().getTypeConfiguration().getDdlTypeRegistry().getTypeName(
+				elementType.getJdbcType().getDdlTypeCode(),
+				sqlTypedMapping == null ? Size.nil() : sqlTypedMapping.toSize(),
+				elementType
+		);
+		sqlAppender.appendSql( "json_table(" );
+		array.accept( walker );
+
+		if ( array instanceof TableColumnReferenceExpression expression ) {
+			sqlAppender.appendSql( ",'$' columns(" );
+			for ( ColumnInfo columnInfo : expression.getIdColumns() ) {
+				sqlAppender.appendSql( columnInfo.name() );
+				sqlAppender.appendSql( ' ' );
+				sqlAppender.appendSql( columnInfo.ddlType() );
+				sqlAppender.appendSql( " path '$." );
+				sqlAppender.appendSql( columnInfo.name() );
+				sqlAppender.appendSql( "'," );
+			}
+
+			sqlAppender.appendSql( "nested path '$.v' columns (" );
+			sqlAppender.append( tupleType.getColumnNames().get( 0 ) );
+			sqlAppender.appendSql( ' ' );
+			sqlAppender.append( columnType );
+			sqlAppender.appendSql( " path '$')))" );
+		}
+		else {
+			sqlAppender.appendSql( ",'$[*]' columns(" );
+			sqlAppender.append( tupleType.getColumnNames().get( 0 ) );
+			sqlAppender.appendSql( ' ' );
+			sqlAppender.append( columnType );
+			sqlAppender.appendSql( " path '$'))" );
+		}
+	}
+
+	static class JsonWrapperExpression implements SelfRenderingExpression {
+		private final List<ColumnInfo> idColumns;
+		private final String tableQualifier;
+		private final Expression argument;
+
+		public JsonWrapperExpression(List<ColumnInfo> idColumns, String tableQualifier, Expression argument) {
+			this.idColumns = idColumns;
+			this.tableQualifier = tableQualifier;
+			this.argument = argument;
+		}
+
+		@Override
+		public void renderToSql(
+				SqlAppender sqlAppender,
+				SqlAstTranslator<?> walker,
+				SessionFactoryImplementor sessionFactory) {
+			// Produce a JSON string e.g. {"id":1,"v":[...]}
+			// which will contain the original JSON as well as id column information for correlation
+			sqlAppender.appendSql( "'{'||trim('{}' from (select" );
+			char separator = ' ';
+			for ( ColumnInfo columnInfo : idColumns ) {
+				sqlAppender.appendSql( separator );
+				sqlAppender.appendSql( tableQualifier );
+				sqlAppender.appendSql( '.' );
+				sqlAppender.appendSql( columnInfo.name() );
+				sqlAppender.appendSql( ' ' );
+				sqlAppender.appendDoubleQuoteEscapedString( columnInfo.name() );
+				separator = ',';
+			}
+			sqlAppender.appendSql( " from sys.dummy for json('arraywrap'='no')))||" );
+			sqlAppender.appendSql( "'\"v\":'||" );
+			argument.accept( walker );
+			sqlAppender.appendSql( "||'}'" );
+		}
+
+		@Override
+		public JdbcMappingContainer getExpressionType() {
+			return argument.getExpressionType();
+		}
+	}
+}

hibernate-core/src/main/java/org/hibernate/dialect/function/array/OracleUnnestFunction.java

@@ -0,0 +1,50 @@
+/*
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.dialect.function.array;
+
+import org.hibernate.metamodel.mapping.CollectionPart;
+import org.hibernate.metamodel.mapping.ModelPart;
+import org.hibernate.metamodel.mapping.SqlTypedMapping;
+import org.hibernate.query.derived.AnonymousTupleTableGroupProducer;
+import org.hibernate.sql.ast.SqlAstTranslator;
+import org.hibernate.sql.ast.spi.SqlAppender;
+import org.hibernate.sql.ast.tree.expression.Expression;
+import org.hibernate.type.BasicPluralType;
+
+import org.checkerframework.checker.nullness.qual.Nullable;
+
+/**
+ * Oracle unnest function.
+ */
+public class OracleUnnestFunction extends UnnestFunction {
+
+	public OracleUnnestFunction() {
+		super( "column_value", "i" );
+	}
+
+	@Override
+	protected void renderUnnest(
+			SqlAppender sqlAppender,
+			Expression array,
+			BasicPluralType<?, ?> pluralType,
+			@Nullable SqlTypedMapping sqlTypedMapping,
+			AnonymousTupleTableGroupProducer tupleType,
+			String tableIdentifierVariable,
+			SqlAstTranslator<?> walker) {
+		final ModelPart ordinalitySubPart = tupleType.findSubPart( CollectionPart.Nature.INDEX.getName(), null );
+		final boolean withOrdinality = ordinalitySubPart != null;
+		if ( withOrdinality ) {
+			sqlAppender.appendSql( "lateral (select t.*, rownum " );
+			sqlAppender.appendSql( ordinalitySubPart.asBasicValuedModelPart().getSelectionExpression() );
+			sqlAppender.appendSql( " from " );
+		}
+		sqlAppender.appendSql( "table(" );
+		array.accept( walker );
+		sqlAppender.appendSql( ")" );
+		if ( withOrdinality ) {
+			sqlAppender.appendSql( " t)" );
+		}
+	}
+}

hibernate-core/src/main/java/org/hibernate/dialect/function/array/PostgreSQLUnnestFunction.java

@@ -0,0 +1,71 @@
+/*
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.dialect.function.array;
+
+import org.checkerframework.checker.nullness.qual.Nullable;
+import org.hibernate.dialect.aggregate.AggregateSupport;
+import org.hibernate.metamodel.mapping.CollectionPart;
+import org.hibernate.metamodel.mapping.SqlTypedMapping;
+import org.hibernate.query.derived.AnonymousTupleTableGroupProducer;
+import org.hibernate.sql.ast.SqlAstTranslator;
+import org.hibernate.sql.ast.spi.SqlAppender;
+import org.hibernate.sql.ast.tree.expression.Expression;
+import org.hibernate.type.BasicPluralType;
+import org.hibernate.type.SqlTypes;
+
+
+/**
+ * PostgreSQL unnest function.
+ */
+public class PostgreSQLUnnestFunction extends UnnestFunction {
+
+	public PostgreSQLUnnestFunction() {
+		super( null, "ordinality" );
+	}
+
+	@Override
+	protected void renderJsonTable(
+			SqlAppender sqlAppender,
+			Expression array,
+			BasicPluralType<?, ?> pluralType,
+			@Nullable SqlTypedMapping sqlTypedMapping,
+			AnonymousTupleTableGroupProducer tupleType,
+			String tableIdentifierVariable,
+			SqlAstTranslator<?> walker) {
+		final AggregateSupport aggregateSupport = walker.getSessionFactory().getJdbcServices().getDialect()
+				.getAggregateSupport();
+		sqlAppender.appendSql( "(select" );
+		tupleType.forEachSelectable( 0, (selectionIndex, selectableMapping) -> {
+			if ( selectionIndex == 0 ) {
+				sqlAppender.append( ' ' );
+			}
+			else {
+				sqlAppender.append( ',' );
+			}
+			if ( CollectionPart.Nature.INDEX.getName().equals( selectableMapping.getSelectableName() ) ) {
+				sqlAppender.appendSql( "t.ordinality" );
+			}
+			else {
+				sqlAppender.append( aggregateSupport.aggregateComponentCustomReadExpression(
+						"",
+						"",
+						"t.value",
+						selectableMapping.getSelectableName(),
+						SqlTypes.JSON,
+						selectableMapping
+				) );
+			}
+			sqlAppender.append( ' ' );
+			sqlAppender.append( selectableMapping.getSelectionExpression() );
+		} );
+		sqlAppender.appendSql( " from jsonb_array_elements(" );
+		array.accept( walker );
+		sqlAppender.appendSql( ')' );
+		if ( tupleType.findSubPart( CollectionPart.Nature.INDEX.getName(), null ) != null ) {
+			sqlAppender.appendSql( " with ordinality" );
+		}
+		sqlAppender.appendSql( " t)" );
+	}
+}

hibernate-core/src/main/java/org/hibernate/dialect/function/array/SQLServerUnnestFunction.java

@@ -0,0 +1,162 @@
+/*
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.dialect.function.array;
+
+
+import org.hibernate.dialect.XmlHelper;
+import org.hibernate.metamodel.mapping.CollectionPart;
+import org.hibernate.metamodel.mapping.SqlTypedMapping;
+import org.hibernate.query.derived.AnonymousTupleTableGroupProducer;
+import org.hibernate.sql.ast.SqlAstTranslator;
+import org.hibernate.sql.ast.spi.SqlAppender;
+import org.hibernate.sql.ast.tree.expression.Expression;
+import org.hibernate.type.BasicPluralType;
+import org.hibernate.type.descriptor.java.BasicPluralJavaType;
+
+import org.checkerframework.checker.nullness.qual.Nullable;
+
+/**
+ * SQL Server unnest function.
+ */
+public class SQLServerUnnestFunction extends UnnestFunction {
+
+	public SQLServerUnnestFunction() {
+		super( "v", "i" );
+	}
+
+	@Override
+	protected void renderJsonTable(
+			SqlAppender sqlAppender,
+			Expression array,
+			BasicPluralType<?, ?> pluralType,
+			@Nullable SqlTypedMapping sqlTypedMapping,
+			AnonymousTupleTableGroupProducer tupleType,
+			String tableIdentifierVariable,
+			SqlAstTranslator<?> walker) {
+		sqlAppender.appendSql( "openjson(" );
+		array.accept( walker );
+		sqlAppender.appendSql( ",'$[*]') with (" );
+
+		if ( tupleType.findSubPart( CollectionPart.Nature.ELEMENT.getName(), null ) == null ) {
+			tupleType.forEachSelectable( 0, (selectionIndex, selectableMapping) -> {
+				if ( selectionIndex == 0 ) {
+					sqlAppender.append( ' ' );
+				}
+				else {
+					sqlAppender.append( ',' );
+				}
+				if ( CollectionPart.Nature.INDEX.getName().equals( selectableMapping.getSelectableName() ) ) {
+					sqlAppender.append( selectableMapping.getSelectionExpression() );
+					sqlAppender.append( " for ordinality" );
+				}
+				else {
+					sqlAppender.append( selectableMapping.getSelectionExpression() );
+					sqlAppender.append( ' ' );
+					sqlAppender.append( getDdlType( selectableMapping, walker ) );
+					sqlAppender.appendSql( " path '$." );
+					sqlAppender.append( selectableMapping.getSelectableName() );
+					sqlAppender.appendSql( '\'' );
+				}
+			} );
+		}
+		else {
+			tupleType.forEachSelectable( 0, (selectionIndex, selectableMapping) -> {
+				if ( selectionIndex == 0 ) {
+					sqlAppender.append( ' ' );
+				}
+				else {
+					sqlAppender.append( ',' );
+				}
+				if ( CollectionPart.Nature.INDEX.getName().equals( selectableMapping.getSelectableName() ) ) {
+					sqlAppender.append( selectableMapping.getSelectionExpression() );
+					sqlAppender.append( " for ordinality" );
+				}
+				else {
+					sqlAppender.append( selectableMapping.getSelectionExpression() );
+					sqlAppender.append( ' ' );
+					sqlAppender.append( getDdlType( selectableMapping, walker ) );
+					sqlAppender.appendSql( " path '$'" );
+				}
+			} );
+		}
+
+		sqlAppender.appendSql( ')' );
+	}
+
+	@Override
+	protected void renderXmlTable(
+			SqlAppender sqlAppender,
+			Expression array,
+			BasicPluralType<?, ?> pluralType,
+			@Nullable SqlTypedMapping sqlTypedMapping,
+			AnonymousTupleTableGroupProducer tupleType,
+			String tableIdentifierVariable,
+			SqlAstTranslator<?> walker) {
+		final XmlHelper.CollectionTags collectionTags = XmlHelper.determineCollectionTags(
+				(BasicPluralJavaType<?>) pluralType.getJavaTypeDescriptor(), walker.getSessionFactory()
+		);
+
+		sqlAppender.appendSql( "(select" );
+
+		if ( tupleType.findSubPart( CollectionPart.Nature.ELEMENT.getName(), null ) == null ) {
+			tupleType.forEachSelectable( 0, (selectionIndex, selectableMapping) -> {
+				if ( selectionIndex == 0 ) {
+					sqlAppender.append( ' ' );
+				}
+				else {
+					sqlAppender.append( ',' );
+				}
+				if ( CollectionPart.Nature.INDEX.getName().equals( selectableMapping.getSelectableName() ) ) {
+					sqlAppender.appendSql( "t.v.value('count(for $a in . return $a/../" );
+					sqlAppender.appendSql( collectionTags.elementName() );
+					sqlAppender.appendSql( "[.<<$a])+1','" );
+					sqlAppender.append( getDdlType( selectableMapping, walker ) );
+					sqlAppender.appendSql( "') " );
+					sqlAppender.appendSql( selectableMapping.getSelectionExpression() );
+				}
+				else {
+					sqlAppender.appendSql( "t.v.value('");
+					sqlAppender.appendSql( selectableMapping.getSelectableName() );
+					sqlAppender.appendSql( "/text()[1]','" );
+					sqlAppender.append( getDdlType( selectableMapping, walker ) );
+					sqlAppender.appendSql( "') " );
+					sqlAppender.appendSql( selectableMapping.getSelectionExpression() );
+				}
+			} );
+		}
+		else {
+			tupleType.forEachSelectable( 0, (selectionIndex, selectableMapping) -> {
+				if ( selectionIndex == 0 ) {
+					sqlAppender.append( ' ' );
+				}
+				else {
+					sqlAppender.append( ',' );
+				}
+				if ( CollectionPart.Nature.INDEX.getName().equals( selectableMapping.getSelectableName() ) ) {
+					sqlAppender.appendSql( "t.v.value('count(for $a in . return $a/../" );
+					sqlAppender.appendSql( collectionTags.elementName() );
+					sqlAppender.appendSql( "[.<<$a])+1','" );
+					sqlAppender.append( getDdlType( selectableMapping, walker ) );
+					sqlAppender.appendSql( "') " );
+					sqlAppender.appendSql( selectableMapping.getSelectionExpression() );
+				}
+				else {
+					sqlAppender.appendSql( "t.v.value('text()[1]','" );
+					sqlAppender.append( getDdlType( selectableMapping, walker ) );
+					sqlAppender.appendSql( "') " );
+					sqlAppender.appendSql( selectableMapping.getSelectionExpression() );
+				}
+			} );
+		}
+
+		sqlAppender.appendSql( " from " );
+		array.accept( walker );
+		sqlAppender.appendSql( ".nodes('/" );
+		sqlAppender.appendSql( collectionTags.rootName() );
+		sqlAppender.appendSql( '/' );
+		sqlAppender.appendSql( collectionTags.elementName() );
+		sqlAppender.appendSql( "') t(v))" );
+	}
+}

hibernate-core/src/main/java/org/hibernate/dialect/function/array/SybaseASEUnnestFunction.java

@@ -0,0 +1,93 @@
+/*
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.dialect.function.array;
+
+import org.hibernate.dialect.XmlHelper;
+import org.hibernate.metamodel.mapping.CollectionPart;
+import org.hibernate.metamodel.mapping.SqlTypedMapping;
+import org.hibernate.query.derived.AnonymousTupleTableGroupProducer;
+import org.hibernate.sql.ast.SqlAstTranslator;
+import org.hibernate.sql.ast.spi.SqlAppender;
+import org.hibernate.sql.ast.tree.expression.Expression;
+import org.hibernate.type.BasicPluralType;
+import org.hibernate.type.descriptor.java.BasicPluralJavaType;
+
+import org.checkerframework.checker.nullness.qual.Nullable;
+
+/**
+ * Sybase ASE unnest function.
+ */
+public class SybaseASEUnnestFunction extends UnnestFunction {
+
+	public SybaseASEUnnestFunction() {
+		super( "v", "i" );
+	}
+
+	@Override
+	protected void renderXmlTable(
+			SqlAppender sqlAppender,
+			Expression array,
+			BasicPluralType<?, ?> pluralType,
+			@Nullable SqlTypedMapping sqlTypedMapping,
+			AnonymousTupleTableGroupProducer tupleType,
+			String tableIdentifierVariable,
+			SqlAstTranslator<?> walker) {
+		final XmlHelper.CollectionTags collectionTags = XmlHelper.determineCollectionTags(
+				(BasicPluralJavaType<?>) pluralType.getJavaTypeDescriptor(), walker.getSessionFactory()
+		);
+		sqlAppender.appendSql( "xmltable('/" );
+		sqlAppender.appendSql( collectionTags.rootName() );
+		sqlAppender.appendSql( '/' );
+		sqlAppender.appendSql( collectionTags.elementName() );
+		sqlAppender.appendSql( "' passing " );
+		array.accept( walker );
+		sqlAppender.appendSql( " columns" );
+
+		if ( tupleType.findSubPart( CollectionPart.Nature.ELEMENT.getName(), null ) == null ) {
+			tupleType.forEachSelectable( 0, (selectionIndex, selectableMapping) -> {
+				if ( selectionIndex == 0 ) {
+					sqlAppender.append( ' ' );
+				}
+				else {
+					sqlAppender.append( ',' );
+				}
+				sqlAppender.append( selectableMapping.getSelectionExpression() );
+				if ( CollectionPart.Nature.INDEX.getName().equals( selectableMapping.getSelectableName() ) ) {
+					sqlAppender.append( " bigint for ordinality" );
+				}
+				else {
+					sqlAppender.append( ' ' );
+					sqlAppender.append( getDdlType( selectableMapping, walker ) );
+					sqlAppender.appendSql( " path '" );
+					sqlAppender.appendSql( selectableMapping.getSelectableName() );
+					sqlAppender.appendSql( "'" );
+				}
+			} );
+		}
+		else {
+			tupleType.forEachSelectable( 0, (selectionIndex, selectableMapping) -> {
+				if ( selectionIndex == 0 ) {
+					sqlAppender.append( ' ' );
+				}
+				else {
+					sqlAppender.append( ',' );
+				}
+				sqlAppender.append( selectableMapping.getSelectionExpression() );
+				if ( CollectionPart.Nature.INDEX.getName().equals( selectableMapping.getSelectableName() ) ) {
+					sqlAppender.append( " bigint for ordinality" );
+				}
+				else {
+					sqlAppender.append( ' ' );
+					sqlAppender.append( getDdlType( selectableMapping, walker ) );
+					sqlAppender.appendSql( " path '" );
+					sqlAppender.appendSql( "." );
+					sqlAppender.appendSql( "'" );
+				}
+			} );
+		}
+
+		sqlAppender.appendSql( ')' );
+	}
+}

hibernate-core/src/main/java/org/hibernate/dialect/function/array/UnnestFunction.java

@@ -0,0 +1,216 @@
+/*
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.dialect.function.array;
+
+import java.util.List;
+
+import org.hibernate.dialect.XmlHelper;
+import org.hibernate.dialect.function.UnnestSetReturningFunctionTypeResolver;
+import org.hibernate.metamodel.mapping.CollectionPart;
+import org.hibernate.metamodel.mapping.SqlTypedMapping;
+import org.hibernate.query.derived.AnonymousTupleTableGroupProducer;
+import org.hibernate.query.sqm.function.AbstractSqmSelfRenderingSetReturningFunctionDescriptor;
+import org.hibernate.query.sqm.produce.function.SetReturningFunctionTypeResolver;
+import org.hibernate.sql.ast.SqlAstTranslator;
+import org.hibernate.sql.ast.spi.SqlAppender;
+import org.hibernate.sql.ast.tree.SqlAstNode;
+import org.hibernate.sql.ast.tree.expression.Expression;
+import org.hibernate.type.BasicPluralType;
+import org.hibernate.type.SqlTypes;
+import org.hibernate.type.Type;
+import org.hibernate.type.descriptor.java.BasicPluralJavaType;
+
+import org.checkerframework.checker.nullness.qual.Nullable;
+
+/**
+ * Standard unnest function.
+ */
+public class UnnestFunction extends AbstractSqmSelfRenderingSetReturningFunctionDescriptor {
+
+	public UnnestFunction(@Nullable String defaultBasicArrayColumnName, String defaultIndexSelectionExpression) {
+		this( new UnnestSetReturningFunctionTypeResolver( defaultBasicArrayColumnName, defaultIndexSelectionExpression ) );
+	}
+
+	protected UnnestFunction(SetReturningFunctionTypeResolver setReturningFunctionTypeResolver) {
+		super(
+				"unnest",
+				null,
+				setReturningFunctionTypeResolver,
+				null
+		);
+	}
+
+	@Override
+	public void render(
+			SqlAppender sqlAppender,
+			List<? extends SqlAstNode> sqlAstArguments,
+			AnonymousTupleTableGroupProducer tupleType,
+			String tableIdentifierVariable,
+			SqlAstTranslator<?> walker) {
+		final Expression array = (Expression) sqlAstArguments.get( 0 );
+		final @Nullable SqlTypedMapping sqlTypedMapping = array.getExpressionType() instanceof SqlTypedMapping
+				? (SqlTypedMapping) array.getExpressionType()
+				: null;
+		final BasicPluralType<?, ?> pluralType = (BasicPluralType<?, ?>) array.getExpressionType().getSingleJdbcMapping();
+		final int ddlTypeCode = pluralType.getJdbcType().getDefaultSqlTypeCode();
+		if ( ddlTypeCode == SqlTypes.JSON_ARRAY ) {
+			renderJsonTable( sqlAppender, array, pluralType, sqlTypedMapping, tupleType, tableIdentifierVariable, walker );
+		}
+		else if ( ddlTypeCode == SqlTypes.XML_ARRAY ) {
+			renderXmlTable( sqlAppender, array, pluralType, sqlTypedMapping, tupleType, tableIdentifierVariable, walker );
+		}
+		else {
+			renderUnnest( sqlAppender, array, pluralType, sqlTypedMapping, tupleType, tableIdentifierVariable, walker );
+		}
+	}
+
+	protected String getDdlType(SqlTypedMapping sqlTypedMapping, SqlAstTranslator<?> translator) {
+		final String columnDefinition = sqlTypedMapping.getColumnDefinition();
+		if ( columnDefinition != null ) {
+			return columnDefinition;
+		}
+		return translator.getSessionFactory().getTypeConfiguration().getDdlTypeRegistry().getTypeName(
+				sqlTypedMapping.getJdbcMapping().getJdbcType().getDdlTypeCode(),
+				sqlTypedMapping.toSize(),
+				(Type) sqlTypedMapping.getJdbcMapping()
+		);
+	}
+
+	protected void renderJsonTable(
+			SqlAppender sqlAppender,
+			Expression array,
+			BasicPluralType<?, ?> pluralType,
+			@Nullable SqlTypedMapping sqlTypedMapping,
+			AnonymousTupleTableGroupProducer tupleType,
+			String tableIdentifierVariable,
+			SqlAstTranslator<?> walker) {
+		sqlAppender.appendSql( "json_table(" );
+		array.accept( walker );
+		sqlAppender.appendSql( ",'$[*]' columns(" );
+		if ( tupleType.findSubPart( CollectionPart.Nature.ELEMENT.getName(), null ) == null ) {
+			tupleType.forEachSelectable( 0, (selectionIndex, selectableMapping) -> {
+				if ( selectionIndex == 0 ) {
+					sqlAppender.append( ' ' );
+				}
+				else {
+					sqlAppender.append( ',' );
+				}
+				sqlAppender.append( selectableMapping.getSelectionExpression() );
+				sqlAppender.append( ' ' );
+				if ( CollectionPart.Nature.INDEX.getName().equals( selectableMapping.getSelectableName() ) ) {
+					sqlAppender.append( " for ordinality" );
+				}
+				else {
+					sqlAppender.append( getDdlType( selectableMapping, walker ) );
+					sqlAppender.appendSql( " path '$." );
+					sqlAppender.append( selectableMapping.getSelectableName() );
+					sqlAppender.appendSql( '\'' );
+				}
+			} );
+		}
+		else {
+			tupleType.forEachSelectable( 0, (selectionIndex, selectableMapping) -> {
+				if ( selectionIndex == 0 ) {
+					sqlAppender.append( ' ' );
+				}
+				else {
+					sqlAppender.append( ',' );
+				}
+				sqlAppender.append( selectableMapping.getSelectionExpression() );
+				if ( CollectionPart.Nature.INDEX.getName().equals( selectableMapping.getSelectableName() ) ) {
+					sqlAppender.append( " for ordinality" );
+				}
+				else {
+					sqlAppender.append( ' ' );
+					sqlAppender.append( getDdlType( selectableMapping, walker ) );
+					sqlAppender.appendSql( " path '$'" );
+				}
+			} );
+		}
+		sqlAppender.appendSql( "))" );
+	}
+
+	protected void renderXmlTable(
+			SqlAppender sqlAppender,
+			Expression array,
+			BasicPluralType<?, ?> pluralType,
+			@Nullable SqlTypedMapping sqlTypedMapping,
+			AnonymousTupleTableGroupProducer tupleType,
+			String tableIdentifierVariable,
+			SqlAstTranslator<?> walker) {
+		final XmlHelper.CollectionTags collectionTags = XmlHelper.determineCollectionTags(
+				(BasicPluralJavaType<?>) pluralType.getJavaTypeDescriptor(), walker.getSessionFactory()
+		);
+
+		sqlAppender.appendSql( "xmltable('$d/" );
+		sqlAppender.appendSql( collectionTags.rootName() );
+		sqlAppender.appendSql( '/' );
+		sqlAppender.appendSql( collectionTags.elementName() );
+		sqlAppender.appendSql( "' passing " );
+		array.accept( walker );
+		sqlAppender.appendSql( " as \"d\" columns" );
+		if ( tupleType.findSubPart( CollectionPart.Nature.ELEMENT.getName(), null ) == null ) {
+			tupleType.forEachSelectable( 0, (selectionIndex, selectableMapping) -> {
+				if ( selectionIndex == 0 ) {
+					sqlAppender.append( ' ' );
+				}
+				else {
+					sqlAppender.append( ',' );
+				}
+				sqlAppender.append( selectableMapping.getSelectionExpression() );
+				if ( CollectionPart.Nature.INDEX.getName().equals( selectableMapping.getSelectableName() ) ) {
+					sqlAppender.append( " for ordinality" );
+				}
+				else {
+					sqlAppender.append( ' ' );
+					sqlAppender.append( getDdlType( selectableMapping, walker ) );
+					sqlAppender.appendSql( " path '" );
+					sqlAppender.appendSql( selectableMapping.getSelectableName() );
+					sqlAppender.appendSql( "/text()" );
+					sqlAppender.appendSql( "'" );
+				}
+			} );
+		}
+		else {
+			tupleType.forEachSelectable( 0, (selectionIndex, selectableMapping) -> {
+				if ( selectionIndex == 0 ) {
+					sqlAppender.append( ' ' );
+				}
+				else {
+					sqlAppender.append( ',' );
+				}
+				sqlAppender.append( selectableMapping.getSelectionExpression() );
+				if ( CollectionPart.Nature.INDEX.getName().equals( selectableMapping.getSelectableName() ) ) {
+					sqlAppender.append( " for ordinality" );
+				}
+				else {
+					sqlAppender.append( ' ' );
+					sqlAppender.append( getDdlType( selectableMapping, walker ) );
+					sqlAppender.appendSql( " path '" );
+					sqlAppender.appendSql( "text()" );
+					sqlAppender.appendSql( "'" );
+				}
+			} );
+		}
+
+		sqlAppender.appendSql( ')' );
+	}
+
+	protected void renderUnnest(
+			SqlAppender sqlAppender,
+			Expression array,
+			BasicPluralType<?, ?> pluralType,
+			@Nullable SqlTypedMapping sqlTypedMapping,
+			AnonymousTupleTableGroupProducer tupleType,
+			String tableIdentifierVariable,
+			SqlAstTranslator<?> walker) {
+		sqlAppender.appendSql( "unnest(" );
+		array.accept( walker );
+		sqlAppender.appendSql( ')' );
+		if ( tupleType.findSubPart( CollectionPart.Nature.INDEX.getName(), null ) != null ) {
+			sqlAppender.append( " with ordinality" );
+		}
+	}
+}

hibernate-core/src/main/java/org/hibernate/dialect/function/json/JsonArrayAggFunction.java

@@ -38,7 +38,7 @@ public class JsonArrayAggFunction extends AbstractSqmSelfRenderingFunctionDescri
 				FunctionKind.ORDERED_SET_AGGREGATE,
 				StandardArgumentsValidators.between( 1, 2 ),
 				StandardFunctionReturnTypeResolvers.invariant(
-						typeConfiguration.getBasicTypeRegistry().resolve( String.class, SqlTypes.JSON_ARRAY )
+						typeConfiguration.getBasicTypeRegistry().resolve( String.class, SqlTypes.JSON )
 				),
 				null
 		);

hibernate-core/src/main/java/org/hibernate/dialect/function/json/JsonArrayFunction.java

@@ -28,7 +28,7 @@ public class JsonArrayFunction extends AbstractSqmSelfRenderingFunctionDescripto
 				FunctionKind.NORMAL,
 				null,
 				StandardFunctionReturnTypeResolvers.invariant(
-						typeConfiguration.getBasicTypeRegistry().resolve( String.class, SqlTypes.JSON_ARRAY )
+						typeConfiguration.getBasicTypeRegistry().resolve( String.class, SqlTypes.JSON )
 				),
 				null
 		);

hibernate-core/src/main/java/org/hibernate/dialect/function/xml/SQLServerXmlAggFunction.java

@@ -119,8 +119,10 @@ public class SQLServerXmlAggFunction extends XmlAggFunction {
 									),
 									alias,
 									List.of("v"),
+									Set.of(),
 									true,
 									true,
+									false,
 									null
 							);
 							tableGroup.addTableGroupJoin(

hibernate-core/src/main/java/org/hibernate/dialect/function/xml/XmlElementFunction.java

@@ -7,6 +7,7 @@ package org.hibernate.dialect.function.xml;
 import java.util.List;
 import java.util.Map;
 
+import org.hibernate.dialect.XmlHelper;
 import org.hibernate.query.ReturnableType;
 import org.hibernate.query.spi.QueryEngine;
 import org.hibernate.query.sqm.function.AbstractSqmSelfRenderingFunctionDescriptor;
@@ -33,8 +34,6 @@ import org.hibernate.type.spi.TypeConfiguration;
 
 import org.checkerframework.checker.nullness.qual.Nullable;
 
-import static java.lang.Character.isLetter;
-import static java.lang.Character.isLetterOrDigit;
 import static org.hibernate.query.sqm.produce.function.FunctionParameterType.STRING;
 
 /**
@@ -56,7 +55,7 @@ public class XmlElementFunction extends AbstractSqmSelfRenderingFunctionDescript
 									TypeConfiguration typeConfiguration) {
 								//noinspection unchecked
 								final String elementName = ( (SqmLiteral<String>) arguments.get( 0 ) ).getLiteralValue();
-								if ( !isValidXmlName( elementName ) ) {
+								if ( !XmlHelper.isValidXmlName( elementName ) ) {
 									throw new FunctionArgumentException(
 											String.format(
 													"Invalid XML element name passed to 'xmlelement()': %s",
@@ -68,7 +67,7 @@ public class XmlElementFunction extends AbstractSqmSelfRenderingFunctionDescript
 										&& arguments.get( 1 ) instanceof SqmXmlAttributesExpression attributesExpression ) {
 									final Map<String, SqmExpression<?>> attributes = attributesExpression.getAttributes();
 									for ( Map.Entry<String, SqmExpression<?>> entry : attributes.entrySet() ) {
-										if ( !isValidXmlName( entry.getKey() ) ) {
+										if ( !XmlHelper.isValidXmlName( entry.getKey() ) ) {
 											throw new FunctionArgumentException(
 													String.format(
 															"Invalid XML attribute name passed to 'xmlattributes()': %s",
@@ -79,29 +78,6 @@ public class XmlElementFunction extends AbstractSqmSelfRenderingFunctionDescript
 									}
 								}
 							}
-
-							private static boolean isValidXmlName(String name) {
-								if ( name.isEmpty()
-										|| !isValidXmlNameStart( name.charAt( 0 ) )
-										|| name.regionMatches( true, 0, "xml", 0, 3 ) ) {
-									return false;
-								}
-								for ( int i = 1; i < name.length(); i++ ) {
-									if ( !isValidXmlNameChar( name.charAt( i ) ) ) {
-										return false;
-									}
-								}
-								return true;
-							}
-
-							private static boolean isValidXmlNameStart(char c) {
-								return isLetter( c ) || c == '_' || c == ':';
-							}
-
-							private static boolean isValidXmlNameChar(char c) {
-								return isLetterOrDigit( c ) || c == '_' || c == ':' || c == '-' || c == '.';
-							}
-
 						}
 				),
 				StandardFunctionReturnTypeResolvers.invariant(

hibernate-core/src/main/java/org/hibernate/dialect/function/xml/XmlForestFunction.java

@@ -6,6 +6,7 @@ package org.hibernate.dialect.function.xml;
 
 import java.util.List;
 
+import org.hibernate.dialect.XmlHelper;
 import org.hibernate.query.ReturnableType;
 import org.hibernate.query.sqm.function.AbstractSqmSelfRenderingFunctionDescriptor;
 import org.hibernate.query.sqm.function.FunctionKind;
@@ -22,9 +23,6 @@ import org.hibernate.sql.ast.tree.expression.AliasedExpression;
 import org.hibernate.type.SqlTypes;
 import org.hibernate.type.spi.TypeConfiguration;
 
-import static java.lang.Character.isLetter;
-import static java.lang.Character.isLetterOrDigit;
-
 /**
  * Standard xmlforest function.
  */
@@ -52,7 +50,7 @@ public class XmlForestFunction extends AbstractSqmSelfRenderingFunctionDescripto
 												)
 										);
 									}
-									if ( !isValidXmlName( namedExpression.getName() ) ) {
+									if ( !XmlHelper.isValidXmlName( namedExpression.getName() ) ) {
 										throw new FunctionArgumentException(
 												String.format(
 														"Invalid XML element name passed to 'xmlforest()': %s",
@@ -63,28 +61,6 @@ public class XmlForestFunction extends AbstractSqmSelfRenderingFunctionDescripto
 								}
 							}
 
-							private static boolean isValidXmlName(String name) {
-								if ( name.isEmpty()
-										|| !isValidXmlNameStart( name.charAt( 0 ) )
-										|| name.regionMatches( true, 0, "xml", 0, 3 ) ) {
-									return false;
-								}
-								for ( int i = 1; i < name.length(); i++ ) {
-									if ( !isValidXmlNameChar( name.charAt( i ) ) ) {
-										return false;
-									}
-								}
-								return true;
-							}
-
-							private static boolean isValidXmlNameStart(char c) {
-								return isLetter( c ) || c == '_' || c == ':';
-							}
-
-							private static boolean isValidXmlNameChar(char c) {
-								return isLetterOrDigit( c ) || c == '_' || c == ':' || c == '-' || c == '.';
-							}
-
 						}
 				),
 				StandardFunctionReturnTypeResolvers.invariant(

hibernate-core/src/main/java/org/hibernate/engine/spi/LazySessionWrapperOptions.java

@@ -0,0 +1,68 @@
+/*
+ * SPDX-License-Identifier: LGPL-2.1-or-later
+ * Copyright Red Hat Inc. and Hibernate Authors
+ */
+package org.hibernate.engine.spi;
+
+import java.util.TimeZone;
+
+import org.hibernate.Internal;
+import org.hibernate.type.descriptor.WrapperOptions;
+
+import org.checkerframework.checker.nullness.qual.Nullable;
+
+/**
+ * A lazy session implementation that is needed for rendering literals.
+ * Usually, only the {@link WrapperOptions} interface is needed,
+ * but for creating LOBs, it might be to have a full-blown session.
+ */
+@Internal
+public class LazySessionWrapperOptions extends AbstractDelegatingWrapperOptions {
+
+	private final SessionFactoryImplementor sessionFactory;
+	private @Nullable SessionImplementor session;
+
+	public LazySessionWrapperOptions(SessionFactoryImplementor sessionFactory) {
+		this.sessionFactory = sessionFactory;
+	}
+
+	public void cleanup() {
+		if ( session != null ) {
+			session.close();
+			session = null;
+		}
+	}
+
+	@Override
+	protected SessionImplementor delegate() {
+		if ( session == null ) {
+			session = sessionFactory.openTemporarySession();
+		}
+		return session;
+	}
+
+	@Override
+	public SharedSessionContractImplementor getSession() {
+		return delegate();
+	}
+
+	@Override
+	public SessionFactoryImplementor getSessionFactory() {
+		return sessionFactory;
+	}
+
+	@Override
+	public boolean useStreamForLobBinding() {
+		return sessionFactory.getFastSessionServices().useStreamForLobBinding();
+	}
+
+	@Override
+	public int getPreferredSqlTypeCodeForBoolean() {
+		return sessionFactory.getFastSessionServices().getPreferredSqlTypeCodeForBoolean();
+	}
+
+	@Override
+	public TimeZone getJdbcTimeZone() {
+		return sessionFactory.getSessionFactoryOptions().getJdbcTimeZone();
+	}
+}

hibernate-core/src/main/java/org/hibernate/mapping/BasicValue.java

@@ -1160,7 +1160,6 @@ public class BasicValue extends SimpleValue implements JdbcTypeIndicators, Resol
 		this.jdbcTypeCode = jdbcTypeCode;
 	}
 
-	@Override
 	public Integer getExplicitJdbcTypeCode() {
 		return jdbcTypeCode == null ? getPreferredSqlTypeCodeForArray() : jdbcTypeCode;
 	}

hibernate-core/src/main/java/org/hibernate/mapping/Column.java

@@ -32,6 +32,8 @@ import org.hibernate.type.EntityType;
 import org.hibernate.type.Type;
 import org.hibernate.type.descriptor.JdbcTypeNameMapper;
 import org.hibernate.type.descriptor.jdbc.JdbcType;
+import org.hibernate.type.descriptor.jdbc.JdbcTypeConstructor;
+import org.hibernate.type.descriptor.jdbc.spi.JdbcTypeRegistry;
 import org.hibernate.type.descriptor.sql.DdlType;
 import org.hibernate.type.descriptor.sql.spi.DdlTypeRegistry;
 import org.hibernate.type.MappingContext;
@@ -116,6 +118,10 @@ public class Column implements Selectable, Serializable, Cloneable, ColumnTypeIn
 		this.value = value;
 	}
 
+	public JdbcMapping getType() {
+		return getValue().getSelectableType( getValue().getBuildingContext().getMetadataCollector(), getTypeIndex() );
+	}
+
 	public String getName() {
 		return name;
 	}
@@ -316,10 +322,22 @@ public class Column implements Selectable, Serializable, Cloneable, ColumnTypeIn
 		return sqlTypeCode;
 	}
 
-	private String getSqlTypeName(DdlTypeRegistry ddlTypeRegistry, Dialect dialect, MappingContext mapping) {
+	private String getSqlTypeName(TypeConfiguration typeConfiguration, Dialect dialect, MappingContext mapping) {
 		if ( sqlTypeName == null ) {
-			final int typeCode = getSqlTypeCode( mapping );
+			final DdlTypeRegistry ddlTypeRegistry = typeConfiguration.getDdlTypeRegistry();
-			final DdlType descriptor = ddlTypeRegistry.getDescriptor( typeCode );
+			final JdbcTypeRegistry jdbcTypeRegistry = typeConfiguration.getJdbcTypeRegistry();
+			final int sqlTypeCode = getSqlTypeCode( mapping );
+			final JdbcTypeConstructor constructor = jdbcTypeRegistry.getConstructor( sqlTypeCode );
+			final JdbcType jdbcType;
+			if ( constructor == null ) {
+				jdbcType = jdbcTypeRegistry.findDescriptor( sqlTypeCode );
+			}
+			else {
+				jdbcType = ( (BasicType<?>) getUnderlyingType( mapping, getValue().getType(), typeIndex ) ).getJdbcType();
+			}
+			final DdlType descriptor = jdbcType == null
+					? null
+					: ddlTypeRegistry.getDescriptor( jdbcType.getDdlTypeCode() );
 			if ( descriptor == null ) {
 				throw new MappingException(
 						String.format(
@@ -327,8 +345,8 @@ public class Column implements Selectable, Serializable, Cloneable, ColumnTypeIn
 								"Unable to determine SQL type name for column '%s' of table '%s' because there is no type mapping for org.hibernate.type.SqlTypes code: %s (%s)",
 								getName(),
 								getValue().getTable().getName(),
-								typeCode,
+								sqlTypeCode,
-								JdbcTypeNameMapper.getTypeName( typeCode )
+								JdbcTypeNameMapper.getTypeName( sqlTypeCode )
 						)
 				);
 			}
@@ -400,7 +418,7 @@ public class Column implements Selectable, Serializable, Cloneable, ColumnTypeIn
 
 	public String getSqlType(Metadata mapping) {
 		final Database database = mapping.getDatabase();
-		return getSqlTypeName( database.getTypeConfiguration().getDdlTypeRegistry(), database.getDialect(), mapping );
+		return getSqlTypeName( database.getTypeConfiguration(), database.getDialect(), mapping );
 	}
 
 	/**
@@ -408,7 +426,7 @@ public class Column implements Selectable, Serializable, Cloneable, ColumnTypeIn
 	 */
 	@Deprecated(since = "6.2")
 	public String getSqlType(TypeConfiguration typeConfiguration, Dialect dialect, Mapping mapping) {
-		return getSqlTypeName( typeConfiguration.getDdlTypeRegistry(), dialect, mapping );
+		return getSqlTypeName( typeConfiguration, dialect, mapping );
 	}
 
 	@Override

hibernate-core/src/main/java/org/hibernate/metamodel/mapping/SqlTypedMapping.java

@@ -6,17 +6,19 @@ package org.hibernate.metamodel.mapping;
 
 import org.hibernate.engine.jdbc.Size;
 
+import org.checkerframework.checker.nullness.qual.Nullable;
+
 /**
  * Models the type of a thing that can be used as an expression in a SQL query
  *
  * @author Christian Beikov
  */
 public interface SqlTypedMapping {
-	String getColumnDefinition();
+	@Nullable String getColumnDefinition();
-	Long getLength();
+	@Nullable Long getLength();
-	Integer getPrecision();
+	@Nullable Integer getPrecision();
-	Integer getScale();
+	@Nullable Integer getScale();
-	Integer getTemporalPrecision();
+	@Nullable Integer getTemporalPrecision();
 	default boolean isLob() {
 		return getJdbcMapping().getJdbcType().isLob();
 	}

hibernate-core/src/main/java/org/hibernate/metamodel/mapping/internal/EmbeddableMappingTypeImpl.java

@@ -77,6 +77,7 @@ import org.hibernate.type.descriptor.jdbc.spi.JdbcTypeRegistry;
 import org.hibernate.type.spi.CompositeTypeImplementor;
 import org.hibernate.type.spi.TypeConfiguration;
 
+import static org.hibernate.type.SqlTypes.ARRAY;
 import static org.hibernate.type.SqlTypes.JSON;
 import static org.hibernate.type.SqlTypes.JSON_ARRAY;
 import static org.hibernate.type.SqlTypes.SQLXML;
@@ -263,13 +264,18 @@ public class EmbeddableMappingTypeImpl extends AbstractEmbeddableMapping impleme
 		final TypeConfiguration typeConfiguration = creationContext.getTypeConfiguration();
 		final BasicTypeRegistry basicTypeRegistry = typeConfiguration.getBasicTypeRegistry();
 		final Column aggregateColumn = bootDescriptor.getAggregateColumn();
-		Integer aggregateSqlTypeCode = aggregateColumn.getSqlTypeCode();
+		final BasicValue basicValue = (BasicValue) aggregateColumn.getValue();
+		final BasicValue.Resolution<?> resolution = basicValue.getResolution();
+		final int aggregateColumnSqlTypeCode = resolution.getJdbcType().getDefaultSqlTypeCode();
+		final int aggregateSqlTypeCode;
 		boolean isArray = false;
 		String structTypeName = null;
-		switch ( aggregateSqlTypeCode ) {
+		switch ( aggregateColumnSqlTypeCode ) {
 			case STRUCT:
+				aggregateSqlTypeCode = STRUCT;
 				structTypeName = aggregateColumn.getSqlType( creationContext.getMetadata() );
 				break;
+			case ARRAY:
 			case STRUCT_ARRAY:
 			case STRUCT_TABLE:
 				isArray = true;
@@ -290,6 +296,9 @@ public class EmbeddableMappingTypeImpl extends AbstractEmbeddableMapping impleme
 				isArray = true;
 				aggregateSqlTypeCode = SQLXML;
 				break;
+			default:
+				aggregateSqlTypeCode = aggregateColumnSqlTypeCode;
+				break;
 		}
 		final JdbcTypeRegistry jdbcTypeRegistry = typeConfiguration.getJdbcTypeRegistry();
 		final AggregateJdbcType aggregateJdbcType = jdbcTypeRegistry.resolveAggregateDescriptor(
@@ -307,7 +316,6 @@ public class EmbeddableMappingTypeImpl extends AbstractEmbeddableMapping impleme
 			basicTypeRegistry.register( basicType, bootDescriptor.getStructName().render() );
 			basicTypeRegistry.register( basicType, getMappedJavaType().getJavaTypeClass().getName() );
 		}
-		final BasicValue basicValue = (BasicValue) aggregateColumn.getValue();
 		final BasicType<?> resolvedJdbcMapping;
 		if ( isArray ) {
 			final JdbcTypeConstructor arrayConstructor = jdbcTypeRegistry.getConstructor( SqlTypes.ARRAY );
@@ -315,7 +323,7 @@ public class EmbeddableMappingTypeImpl extends AbstractEmbeddableMapping impleme
 				throw new IllegalArgumentException( "No JdbcTypeConstructor registered for SqlTypes.ARRAY" );
 			}
 			//noinspection rawtypes,unchecked
-			final BasicType<?> arrayType = ( (BasicPluralJavaType) basicValue.getResolution().getDomainJavaType() ).resolveType(
+			final BasicType<?> arrayType = ( (BasicPluralJavaType) resolution.getDomainJavaType() ).resolveType(
 					typeConfiguration,
 					creationContext.getDialect(),
 					basicType,
@@ -328,7 +336,7 @@ public class EmbeddableMappingTypeImpl extends AbstractEmbeddableMapping impleme
 		else {
 			resolvedJdbcMapping = basicType;
 		}
-		basicValue.getResolution().updateResolution( resolvedJdbcMapping );
+		resolution.updateResolution( resolvedJdbcMapping );
 		return resolvedJdbcMapping;
 	}
 

hibernate-core/src/main/java/org/hibernate/metamodel/mapping/internal/SqlTypedMappingImpl.java

@@ -7,24 +7,30 @@ package org.hibernate.metamodel.mapping.internal;
 import org.hibernate.metamodel.mapping.JdbcMapping;
 import org.hibernate.metamodel.mapping.SqlTypedMapping;
 
+import org.checkerframework.checker.nullness.qual.Nullable;
+
 /**
  * @author Christian Beikov
  */
 public class SqlTypedMappingImpl implements SqlTypedMapping {
 
-	private final String columnDefinition;
+	private final @Nullable String columnDefinition;
-	private final Long length;
+	private final @Nullable Long length;
-	private final Integer precision;
+	private final @Nullable Integer precision;
-	private final Integer scale;
+	private final @Nullable Integer scale;
-	private final Integer temporalPrecision;
+	private final @Nullable Integer temporalPrecision;
 	private final JdbcMapping jdbcMapping;
 
+	public SqlTypedMappingImpl(JdbcMapping jdbcMapping) {
+		this( null, null, null, null, null, jdbcMapping );
+	}
+
 	public SqlTypedMappingImpl(
-			String columnDefinition,
+			@Nullable String columnDefinition,
-			Long length,
+			@Nullable Long length,
-			Integer precision,
+			@Nullable Integer precision,
-			Integer scale,
+			@Nullable Integer scale,
-			Integer temporalPrecision,
+			@Nullable Integer temporalPrecision,
 			JdbcMapping jdbcMapping) {
 		// Save memory by using interned strings. Probability is high that we have multiple duplicate strings
 		this.columnDefinition = columnDefinition == null ? null : columnDefinition.intern();
@@ -36,27 +42,27 @@ public class SqlTypedMappingImpl implements SqlTypedMapping {
 	}
 
 	@Override
-	public String getColumnDefinition() {
+	public @Nullable String getColumnDefinition() {
 		return columnDefinition;
 	}
 
 	@Override
-	public Long getLength() {
+	public @Nullable Long getLength() {
 		return length;
 	}
 
 	@Override
-	public Integer getPrecision() {
+	public @Nullable Integer getPrecision() {
 		return precision;
 	}
 
 	@Override
-	public Integer getTemporalPrecision() {
+	public @Nullable Integer getTemporalPrecision() {
 		return temporalPrecision;
 	}
 
 	@Override
-	public Integer getScale() {
+	public @Nullable Integer getScale() {
 		return scale;
 	}
 

hibernate-core/src/main/java/org/hibernate/metamodel/model/domain/internal/MappingMetamodelImpl.java

@@ -60,6 +60,7 @@ import org.hibernate.persister.collection.CollectionPersister;
 import org.hibernate.persister.entity.EntityPersister;
 import org.hibernate.persister.spi.PersisterFactory;
 import org.hibernate.query.BindableType;
+import org.hibernate.query.derived.AnonymousTupleSimpleSqmPathSource;
 import org.hibernate.query.derived.AnonymousTupleSqmPathSource;
 import org.hibernate.query.sqm.SqmExpressible;
 import org.hibernate.query.sqm.tree.domain.SqmPath;
@@ -742,7 +743,8 @@ public class MappingMetamodelImpl extends QueryParameterBindingTypeResolverImpl
 			return getTypeConfiguration().getBasicTypeForJavaType( sqmExpressible.getRelationalJavaType().getJavaType() );
 		}
 
-		if ( sqmExpressible instanceof BasicSqmPathSource<?> ) {
+		if ( sqmExpressible instanceof BasicSqmPathSource<?>
+				|| sqmExpressible instanceof AnonymousTupleSimpleSqmPathSource<?> ) {
 			return resolveMappingExpressible( sqmExpressible.getSqmType(), tableGroupLocator );
 		}
 

hibernate-core/src/main/java/org/hibernate/metamodel/model/domain/internal/SingularAttributeImpl.java

@@ -27,10 +27,14 @@ import org.hibernate.query.sqm.spi.SqmCreationHelper;
 import org.hibernate.query.sqm.tree.SqmJoinType;
 import org.hibernate.query.sqm.tree.domain.SqmPath;
 import org.hibernate.query.sqm.tree.domain.SqmSingularJoin;
-import org.hibernate.query.sqm.tree.from.SqmAttributeJoin;
+import org.hibernate.query.sqm.tree.expression.SqmSetReturningFunction;
 import org.hibernate.query.sqm.tree.from.SqmFrom;
+import org.hibernate.query.sqm.tree.from.SqmFunctionJoin;
+import org.hibernate.query.sqm.tree.from.SqmJoin;
+import org.hibernate.query.sqm.tree.from.SqmRoot;
 import org.hibernate.spi.EntityIdentifierNavigablePath;
 import org.hibernate.spi.NavigablePath;
+import org.hibernate.type.BasicPluralType;
 import org.hibernate.type.descriptor.java.JavaType;
 
 import static jakarta.persistence.metamodel.Bindable.BindableType.SINGULAR_ATTRIBUTE;
@@ -143,7 +147,7 @@ public class SingularAttributeImpl<D,J>
 	}
 
 	@Override
-	public SqmAttributeJoin<D,J> createSqmJoin(
+	public SqmJoin<D,J> createSqmJoin(
 			SqmFrom<?,D> lhs,
 			SqmJoinType joinType,
 			String alias,
@@ -152,6 +156,21 @@ public class SingularAttributeImpl<D,J>
 		if ( getType() instanceof AnyMappingDomainType ) {
 			throw new SemanticException( "An @Any attribute cannot be join fetched" );
 		}
+		else if ( sqmPathSource.getSqmPathType() instanceof BasicPluralType<?,?> ) {
+			final SqmSetReturningFunction<J> setReturningFunction = creationState.getCreationContext()
+					.getNodeBuilder()
+					.unnestArray( lhs.get( getName() ) );
+			//noinspection unchecked
+			return (SqmJoin<D, J>) new SqmFunctionJoin<>(
+					createNavigablePath( lhs, alias ),
+					setReturningFunction,
+					true,
+					setReturningFunction.getType(),
+					alias,
+					joinType,
+					(SqmRoot<Object>) lhs
+			);
+		}
 		else {
 			return new SqmSingularJoin<>(
 					lhs,

hibernate-core/src/main/java/org/hibernate/query/criteria/CriteriaDefinition.java

@@ -469,6 +469,11 @@ public abstract class CriteriaDefinition<R>
 		return query.from(cte);
 	}
 
+	@Override
+	public <X> JpaFunctionRoot<X> from(JpaSetReturningFunction<X> function) {
+		return query.from( function );
+	}
+
 	@Override
 	public JpaCriteriaQuery<Long> createCountQuery() {
 		return query.createCountQuery();

hibernate-core/src/main/java/org/hibernate/query/criteria/HibernateCriteriaBuilder.java

@@ -4193,6 +4193,37 @@ public interface HibernateCriteriaBuilder extends CriteriaBuilder {
 	@Incubating
 	<T> JpaExpression<T> named(Expression<T> expression, String name);
 
+	// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+	// Set-Returning functions
+
+	/**
+	 * Create a new set-returning function expression.
+	 *
+	 * @since 7.0
+	 * @see JpaSelectCriteria#from(JpaSetReturningFunction)
+	 * @see JpaFrom#join(JpaSetReturningFunction)
+	 */
+	@Incubating
+	<E> JpaSetReturningFunction<E> setReturningFunction(String name, Expression<?>... args);
+
+	/**
+	 * Creates an unnest function expression to turn an array into a set of rows.
+	 *
+	 * @since 7.0
+	 * @see JpaFrom#join(JpaSetReturningFunction)
+	 */
+	@Incubating
+	<E> JpaSetReturningFunction<E> unnestArray(Expression<E[]> array);
+
+	/**
+	 * Creates an unnest function expression to turn an array into a set of rows.
+	 *
+	 * @since 7.0
+	 * @see JpaFrom#join(JpaSetReturningFunction)
+	 */
+	@Incubating
+	<E> JpaSetReturningFunction<E> unnestCollection(Expression<? extends Collection<E>> collection);
+
 	@Override
 	JpaPredicate and(List<Predicate> restrictions);
 

hibernate-core/src/main/java/org/hibernate/query/criteria/JpaFrom.java

@@ -4,10 +4,13 @@
  */
 package org.hibernate.query.criteria;
 
+import java.util.Collection;
+
 import org.hibernate.Incubating;
 import org.hibernate.metamodel.model.domain.EntityDomainType;
 import org.hibernate.query.sqm.tree.SqmJoinType;
 
+import jakarta.persistence.criteria.Expression;
 import jakarta.persistence.criteria.From;
 import jakarta.persistence.criteria.JoinType;
 import jakarta.persistence.criteria.Subquery;
@@ -62,6 +65,130 @@ public interface JpaFrom<O,T> extends JpaPath<T>, JpaFetchParent<O,T>, From<O,T>
 	@Incubating
 	<X> JpaDerivedJoin<X> join(Subquery<X> subquery, SqmJoinType joinType, boolean lateral);
 
+	/**
+	 * Like calling the overload {@link #join(JpaSetReturningFunction, SqmJoinType)} with {@link SqmJoinType#INNER}.
+	 *
+	 * @see #join(JpaSetReturningFunction, SqmJoinType)
+	 * @since 7.0
+	 */
+	@Incubating
+	<X> JpaFunctionJoin<X> join(JpaSetReturningFunction<X> function);
+
+	/**
+	 * Like calling the overload {@link #join(JpaSetReturningFunction, SqmJoinType, boolean)} passing {@code false}
+	 * for the {@code lateral} parameter.
+	 *
+	 * @see #join(JpaSetReturningFunction, SqmJoinType, boolean)
+	 * @since 7.0
+	 */
+	@Incubating
+	<X> JpaFunctionJoin<X> join(JpaSetReturningFunction<X> function, SqmJoinType joinType);
+
+	/**
+	 * Like calling the overload {@link #joinLateral(JpaSetReturningFunction, SqmJoinType)} with {@link SqmJoinType#INNER}.
+	 *
+	 * @see #joinLateral(JpaSetReturningFunction, SqmJoinType)
+	 * @since 7.0
+	 */
+	@Incubating
+	<X> JpaFunctionJoin<X> joinLateral(JpaSetReturningFunction<X> function);
+
+	/**
+	 * Like calling the overload {@link #join(JpaSetReturningFunction, SqmJoinType, boolean)} passing {@code true}
+	 * for the {@code lateral} parameter.
+	 *
+	 * @see #join(JpaSetReturningFunction, SqmJoinType, boolean)
+	 * @since 7.0
+	 */
+	@Incubating
+	<X> JpaFunctionJoin<X> joinLateral(JpaSetReturningFunction<X> function, SqmJoinType joinType);
+
+	/**
+	 * Creates and returns a join node for the given set returning function.
+	 * If function arguments refer to correlated paths, the {@code lateral} argument must be set to {@code true}.
+	 * Failing to do so when necessary may lead to an error during query compilation or execution.
+	 *
+	 * @since 7.0
+	 */
+	@Incubating
+	<X> JpaFunctionJoin<X> join(JpaSetReturningFunction<X> function, SqmJoinType joinType, boolean lateral);
+
+	/**
+	 * Like calling the overload {@link #joinArray(String, SqmJoinType)} with {@link SqmJoinType#INNER}.
+	 *
+	 * @see #joinArray(String, SqmJoinType)
+	 * @since 7.0
+	 */
+	@Incubating
+	<X> JpaFunctionJoin<X> joinArray(String arrayAttributeName);
+
+	/**
+	 * Like calling the overload {@link #join(JpaSetReturningFunction, SqmJoinType)} with {@link HibernateCriteriaBuilder#unnestArray(Expression)}
+	 * with the result of {@link #get(String)} passing the given attribute name.
+	 *
+	 * @see #joinLateral(JpaSetReturningFunction, SqmJoinType)
+	 * @since 7.0
+	 */
+	@Incubating
+	<X> JpaFunctionJoin<X> joinArray(String arrayAttributeName, SqmJoinType joinType);
+
+	/**
+	 * Like calling the overload {@link #joinArray(SingularAttribute, SqmJoinType)} with {@link SqmJoinType#INNER}.
+	 *
+	 * @see #joinArray(SingularAttribute, SqmJoinType)
+	 * @since 7.0
+	 */
+	@Incubating
+	<X> JpaFunctionJoin<X> joinArray(SingularAttribute<? super T, X[]> arrayAttribute);
+
+	/**
+	 * Like calling the overload {@link #join(JpaSetReturningFunction, SqmJoinType)} with {@link HibernateCriteriaBuilder#unnestArray(Expression)}
+	 * with the given attribute.
+	 *
+	 * @see #joinLateral(JpaSetReturningFunction, SqmJoinType)
+	 * @since 7.0
+	 */
+	@Incubating
+	<X> JpaFunctionJoin<X> joinArray(SingularAttribute<? super T, X[]> arrayAttribute, SqmJoinType joinType);
+
+	/**
+	 * Like calling the overload {@link #joinArrayCollection(String, SqmJoinType)} with {@link SqmJoinType#INNER}.
+	 *
+	 * @see #joinArrayCollection(String, SqmJoinType)
+	 * @since 7.0
+	 */
+	@Incubating
+	<X> JpaFunctionJoin<X> joinArrayCollection(String collectionAttributeName);
+
+	/**
+	 * Like calling the overload {@link #join(JpaSetReturningFunction, SqmJoinType)} with {@link HibernateCriteriaBuilder#unnestCollection(Expression)}
+	 * with the result of {@link #get(String)} passing the given attribute name.
+	 *
+	 * @see #joinLateral(JpaSetReturningFunction, SqmJoinType)
+	 * @since 7.0
+	 */
+	@Incubating
+	<X> JpaFunctionJoin<X> joinArrayCollection(String collectionAttributeName, SqmJoinType joinType);
+
+	/**
+	 * Like calling the overload {@link #joinArrayCollection(SingularAttribute, SqmJoinType)} with {@link SqmJoinType#INNER}.
+	 *
+	 * @see #joinArrayCollection(SingularAttribute, SqmJoinType)
+	 * @since 7.0
+	 */
+	@Incubating
+	<X> JpaFunctionJoin<X> joinArrayCollection(SingularAttribute<? super T, ? extends Collection<X>> collectionAttribute);
+
+	/**
+	 * Like calling the overload {@link #join(JpaSetReturningFunction, SqmJoinType)} with {@link HibernateCriteriaBuilder#unnestCollection(Expression)}
+	 * with the given attribute.
+	 *
+	 * @see #joinLateral(JpaSetReturningFunction, SqmJoinType)
+	 * @since 7.0
+	 */
+	@Incubating
+	<X> JpaFunctionJoin<X> joinArrayCollection(SingularAttribute<? super T, ? extends Collection<X>> collectionAttribute, SqmJoinType joinType);
+
 	@Incubating
 	<X> JpaJoin<?, X> join(JpaCteCriteria<X> cte);