HHH-14642, HHH-13717 Various JPA Criteria related fixes

* Get rid of unnecessary whitespace and optional keywords in generated SQL
* Handle some type inference related issues with some databases requiring to render casted parameters in some situations
* Ensure SQM model is fully serializable
* Ensure JPA Criteria throws expected exceptions
* Make sure JPA Criteria implementations work properly
* Move jpa.test.callback and jpa.test.criteria packages
* Improve the reuse of SqmPath instances
* Get rid of many raw-types related warnings
* Make Predicate extend Expression and handle SQL rendering/emulation
* Support fetching SqmTuple as array
* Implement treat operator support

docker_db.sh

@@ -2,7 +2,7 @@
 
 mysql_5_7() {
     docker rm -f mysql || true
-    docker run --name mysql -e MYSQL_USER=hibernate_orm_test -e MYSQL_PASSWORD=hibernate_orm_test -e MYSQL_DATABASE=hibernate_orm_test -e MYSQL_ROOT_PASSWORD=hibernate_orm_test -p3306:3306 -d mysql:5.7 --character-set-server=utf8mb4 --collation-server=utf8mb4_general_cs
+    docker run --name mysql -e MYSQL_USER=hibernate_orm_test -e MYSQL_PASSWORD=hibernate_orm_test -e MYSQL_DATABASE=hibernate_orm_test -e MYSQL_ROOT_PASSWORD=hibernate_orm_test -p3306:3306 -d mysql:5.7 --character-set-server=utf8mb4 --collation-server=utf8mb4_bin
     # Give the container some time to start
     OUTPUT=
     n=0

documentation/src/test/java/org/hibernate/userguide/hql/HQLTest.java

@@ -27,8 +27,8 @@ import org.hibernate.Session;
 import org.hibernate.dialect.CockroachDialect;
 import org.hibernate.dialect.DerbyDialect;
 import org.hibernate.dialect.H2Dialect;
-import org.hibernate.dialect.MySQL5Dialect;
+import org.hibernate.dialect.MySQLDialect;
-import org.hibernate.dialect.Oracle8iDialect;
+import org.hibernate.dialect.OracleDialect;
 import org.hibernate.dialect.PostgreSQLDialect;
 import org.hibernate.dialect.SQLServerDialect;
 import org.hibernate.jpa.test.BaseEntityManagerFunctionalTestCase;
@@ -1355,7 +1355,8 @@ public class HQLTest extends BaseEntityManagerFunctionalTestCase {
 		});
 	}
 
-	@Test @RequiresDialect(H2Dialect.class)
+	@Test
+	@RequiresDialect(H2Dialect.class)
 	public void test_hql_current_time_function_example() {
 		doInJPA( this::entityManagerFactory, entityManager -> {
 			//tag::hql-current-time-function-example[]
@@ -1385,8 +1386,8 @@ public class HQLTest extends BaseEntityManagerFunctionalTestCase {
 
 	@Test
 	@RequiresDialect(H2Dialect.class)
-	@RequiresDialect(Oracle8iDialect.class)
+	@RequiresDialect(OracleDialect.class)
-	@RequiresDialect(MySQL5Dialect.class)
+	@RequiresDialect(MySQLDialect.class)
 	public void test_hql_bit_length_function_example() {
 		doInJPA( this::entityManagerFactory, entityManager -> {
 			//tag::hql-bit-length-function-example[]
@@ -1940,7 +1941,7 @@ public class HQLTest extends BaseEntityManagerFunctionalTestCase {
 	@Test
 	@RequiresDialect(H2Dialect.class)
 	@RequiresDialect(PostgreSQLDialect.class)
-	@RequiresDialect(MySQL5Dialect.class)
+	@RequiresDialect(MySQLDialect.class)
 	public void test_hql_relational_comparisons_example_3() {
 
 		doInJPA( this::entityManagerFactory, entityManager -> {
@@ -2145,7 +2146,7 @@ public class HQLTest extends BaseEntityManagerFunctionalTestCase {
 	@Test
 	@RequiresDialect(H2Dialect.class)
 	@RequiresDialect(PostgreSQLDialect.class)
-	@RequiresDialect(MySQL5Dialect.class)
+	@RequiresDialect(MySQLDialect.class)
 	public void test_hql_between_predicate_example_2() {
 
 		doInJPA( this::entityManagerFactory, entityManager -> {
@@ -2399,9 +2400,6 @@ public class HQLTest extends BaseEntityManagerFunctionalTestCase {
 	}
 
 	@Test
-	@RequiresDialect(H2Dialect.class)
-	@RequiresDialect(PostgreSQLDialect.class)
-	@RequiresDialect(MySQL5Dialect.class)
 	public void test_hql_group_by_example_3() {
 
 		doInJPA( this::entityManagerFactory, entityManager -> {
@@ -2421,9 +2419,6 @@ public class HQLTest extends BaseEntityManagerFunctionalTestCase {
 	}
 
 	@Test
-	@RequiresDialect(H2Dialect.class)
-	@RequiresDialect(PostgreSQLDialect.class)
-	@RequiresDialect(MySQL5Dialect.class)
 	public void test_hql_group_by_example_4() {
 
 		doInJPA( this::entityManagerFactory, entityManager -> {

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

@@ -167,6 +167,7 @@ public class CUBRIDDialect extends Dialect {
 		CommonFunctionFactory.lastDay( queryEngine );
 		CommonFunctionFactory.weekQuarter( queryEngine );
 		CommonFunctionFactory.octetLength( queryEngine );
+		CommonFunctionFactory.bitLength( queryEngine );
 		CommonFunctionFactory.md5( queryEngine );
 		CommonFunctionFactory.trunc( queryEngine );
 		CommonFunctionFactory.truncate( queryEngine );
@@ -386,11 +387,11 @@ public class CUBRIDDialect extends Dialect {
 	public String timestampaddPattern(TemporalUnit unit, TemporalType temporalType) {
 		switch (unit) {
 			case NANOSECOND:
-				return "adddate(?3, interval (?2)/1e6 millisecond)";
+				return "adddate(?3,interval (?2)/1e6 millisecond)";
 			case NATIVE:
-				return "adddate(?3, interval ?2 millisecond)";
+				return "adddate(?3,interval ?2 millisecond)";
 			default:
-				return "adddate(?3, interval ?2 ?1)";
+				return "adddate(?3,interval ?2 ?1)";
 		}
 	}
 

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

@@ -146,9 +146,10 @@ public class CacheDialect extends Dialect {
 		queryEngine.getSqmFunctionRegistry().registerBinaryTernaryPattern(
 				"locate",
 				StandardBasicTypes.INTEGER,
-				"$find(?2, ?1)",
+				"$find(?2,?1)",
-				"$find(?2, ?1, ?3)"
+				"$find(?2,?1,?3)"
 		).setArgumentListSignature("(pattern, string[, start])");
+		CommonFunctionFactory.bitLength_pattern( queryEngine, "($length(?1)*8)" );
 
 		useJdbcEscape(queryEngine, "sin");
 		useJdbcEscape(queryEngine, "cos");
@@ -181,7 +182,7 @@ public class CacheDialect extends Dialect {
 
 	@Override
 	public String extractPattern(TemporalUnit unit) {
-		return "datepart(?1, ?2)";
+		return "datepart(?1,?2)";
 	}
 
 	@Override
@@ -189,9 +190,9 @@ public class CacheDialect extends Dialect {
 		switch (unit) {
 			case NANOSECOND:
 			case NATIVE:
-				return "dateadd(millisecond, (?2)/1e6, ?3)";
+				return "dateadd(millisecond,(?2)/1e6,?3)";
 			default:
-				return "dateadd(?1, ?2, ?3)";
+				return "dateadd(?1,?2,?3)";
 		}
 	}
 
@@ -200,9 +201,9 @@ public class CacheDialect extends Dialect {
 		switch (unit) {
 			case NANOSECOND:
 			case NATIVE:
-				return "datediff(millisecond, ?2, ?3)*1e6";
+				return "datediff(millisecond,?2,?3)*1e6";
 			default:
-				return "datediff(?1, ?2, ?3)";
+				return "datediff(?1,?2,?3)";
 		}
 	}
 

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

@@ -248,7 +248,7 @@ public class FirebirdDialect extends Dialect {
 				"locate",
 				StandardBasicTypes.INTEGER,
 				"position(?1 in ?2)",
-				"position(?1, ?2, ?3)"
+				"position(?1,?2,?3)"
 		).setArgumentListSignature( "(pattern, string[, start])" );
 		functionRegistry.namedDescriptorBuilder( "ascii_val" )
 				.setExactArgumentCount( 1 )
@@ -593,7 +593,7 @@ public class FirebirdDialect extends Dialect {
 				? "select rdb$generator_name from rdb$generators"
 				// Note: Firebird 3 has an 'off by increment' bug (fixed in Firebird 4), see
 				// http://tracker.firebirdsql.org/browse/CORE-6084
-				: "select rdb$generator_name, rdb$initial_value, rdb$generator_increment from rdb$generators where coalesce(rdb$system_flag, 0) = 0";
+				: "select rdb$generator_name,rdb$initial_value,rdb$generator_increment from rdb$generators where coalesce(rdb$system_flag,0)=0";
 	}
 
 	@Override

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

@@ -30,6 +30,7 @@ import org.hibernate.sql.ast.tree.expression.QueryLiteral;
 import org.hibernate.sql.ast.tree.expression.SelfRenderingExpression;
 import org.hibernate.sql.ast.tree.expression.SqlTuple;
 import org.hibernate.sql.ast.tree.expression.Summarization;
+import org.hibernate.sql.ast.tree.predicate.BooleanExpressionPredicate;
 import org.hibernate.sql.ast.tree.predicate.SelfRenderingPredicate;
 import org.hibernate.sql.ast.tree.select.QueryGroup;
 import org.hibernate.sql.ast.tree.select.QueryPart;
@@ -50,6 +51,16 @@ public class FirebirdSqlAstTranslator<T extends JdbcOperation> extends AbstractS
 		super( sessionFactory, statement );
 	}
 
+	@Override
+	public void visitBooleanExpressionPredicate(BooleanExpressionPredicate booleanExpressionPredicate) {
+		if ( getDialect().getVersion() >= 300 ) {
+			booleanExpressionPredicate.getExpression().accept( this );
+		}
+		else {
+			super.visitBooleanExpressionPredicate( booleanExpressionPredicate );
+		}
+	}
+
 	@Override
 	protected String getForUpdate() {
 		return " with lock";

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

@@ -168,8 +168,8 @@ public class InformixDialect extends Dialect {
 		queryEngine.getSqmFunctionRegistry().registerBinaryTernaryPattern(
 				"locate",
 				StandardBasicTypes.INTEGER,
-				"instr(?2, ?1)",
+				"instr(?2,?1)",
-				"instr(?2, ?1, ?3)"
+				"instr(?2,?1,?3)"
 		).setArgumentListSignature("(pattern, string[, start])");
 
 		//coalesce() and nullif() both supported since Informix 12
@@ -307,7 +307,7 @@ public class InformixDialect extends Dialect {
 
 	@Override
 	public String getQuerySequencesString() {
-		return "select systables.tabname as sequence_name, syssequences.* from syssequences join systables on syssequences.tabid = systables.tabid where tabtype = 'Q'";
+		return "select systables.tabname as sequence_name,syssequences.* from syssequences join systables on syssequences.tabid=systables.tabid where tabtype='Q'";
 	}
 
 	@Override
@@ -322,7 +322,7 @@ public class InformixDialect extends Dialect {
 
 	@Override
 	public String getFromDual() {
-		return "from (select 0 from systables where tabid = 1) as dual";
+		return "from (select 0 from systables where tabid=1) as dual";
 	}
 
 	@Override

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

@@ -145,7 +145,7 @@ public class InformixSqlAstTranslator<T extends JdbcOperation> extends AbstractS
 
 	@Override
 	protected String getFromDual() {
-		return " from (select 0 from systables where tabid = 1) as dual";
+		return " from (select 0 from systables where tabid=1) dual";
 	}
 
 	@Override

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

@@ -235,15 +235,16 @@ public class IngresDialect extends Dialect {
 		CommonFunctionFactory.position( queryEngine );
 		CommonFunctionFactory.format_dateFormat( queryEngine );
 		CommonFunctionFactory.dateTrunc( queryEngine );
+		CommonFunctionFactory.bitLength_pattern( queryEngine, "octet_length(hex(?1))*4" );
 
 		queryEngine.getSqmFunctionRegistry().registerBinaryTernaryPattern(
 				"locate",
 				StandardBasicTypes.INTEGER,
 				"position(?1 in ?2)",
-				"(position(?1 in substring(?2 from ?3)) + (?3) - 1)"
+				"(position(?1 in substring(?2 from ?3))+(?3)-1)"
 		).setArgumentListSignature("(pattern, string[, start])");
 
-		queryEngine.getSqmFunctionRegistry().registerPattern( "extract", "date_part('?1', ?2)", StandardBasicTypes.INTEGER );
+		queryEngine.getSqmFunctionRegistry().registerPattern( "extract", "date_part('?1',?2)", StandardBasicTypes.INTEGER );
 
 		CommonFunctionFactory.bitandorxornot_bitAndOrXorNot(queryEngine);
 
@@ -290,13 +291,13 @@ public class IngresDialect extends Dialect {
 
 	@Override
 	public String timestampaddPattern(TemporalUnit unit, TemporalType temporalType) {
-		return "timestampadd(?1, ?2, ?3)";
+		return "timestampadd(?1,?2,?3)";
 
 	}
 
 	@Override
 	public String timestampdiffPattern(TemporalUnit unit, TemporalType fromTemporalType, TemporalType toTemporalType) {
-		return "timestampdiff(?1, ?2, ?3)";
+		return "timestampdiff(?1,?2,?3)";
 	}
 
 	@Override

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

@@ -151,7 +151,7 @@ public class IngresSqlAstTranslator<T extends JdbcOperation> extends AbstractSql
 	@Override
 	protected String getFromDual() {
 		//this is only necessary if the query has a where clause
-		return " from (select 0) as dual";
+		return " from (select 0) dual";
 	}
 
 	@Override

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

@@ -139,7 +139,7 @@ public class MaxDBDialect extends Dialect {
 
 		queryEngine.getSqmFunctionRegistry().registerBinaryTernaryPattern(
 				"locate",
-				StandardBasicTypes.INTEGER, "index(?2, ?1)", "index(?2, ?1, ?3)"
+				StandardBasicTypes.INTEGER, "index(?2,?1)", "index(?2,?1,?3)"
 		).setArgumentListSignature("(pattern, string[, start])");
 	}
 

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

@@ -68,7 +68,7 @@ public class MaxDBSqlAstTranslator<T extends JdbcOperation> extends AbstractSqlA
 			visitDecodeCaseSearchedExpression( caseSearchedExpression );
 		}
 		else {
-			visitAnsiCaseSearchedExpression( caseSearchedExpression );
+			super.visitCaseSearchedExpression( caseSearchedExpression, inSelect );
 		}
 	}
 

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

@@ -101,6 +101,7 @@ public class MimerSQLDialect extends Dialect {
 
 		CommonFunctionFactory.soundex( queryEngine );
 		CommonFunctionFactory.octetLength( queryEngine );
+		CommonFunctionFactory.bitLength( queryEngine );
 		CommonFunctionFactory.truncate( queryEngine );
 		CommonFunctionFactory.repeat( queryEngine );
 		CommonFunctionFactory.pad_repeat( queryEngine );
@@ -161,7 +162,7 @@ public class MimerSQLDialect extends Dialect {
 
 	public String timestampdiffPattern(TemporalUnit unit, TemporalType fromTemporalType, TemporalType toTemporalType) {
 		StringBuilder pattern = new StringBuilder();
-		pattern.append("cast((?3 - ?2) ");
+		pattern.append("cast((?3-?2) ");
 		switch (unit) {
 			case NATIVE:
 			case NANOSECOND:
@@ -209,13 +210,13 @@ public class MimerSQLDialect extends Dialect {
 		switch ( unit ) {
 			case NATIVE:
 			case NANOSECOND:
-				return "(?3 + (?2)/1e9 * interval '1' second)";
+				return "(?3+(?2)/1e9*interval '1' second)";
 			case QUARTER:
-				return "(?3 + (?2) * interval '3' month)";
+				return "(?3+(?2)*interval '3' month)";
 			case WEEK:
-				return "(?3 + (?2) * interval '7' day)";
+				return "(?3+(?2)*interval '7' day)";
 			default:
-				return "(?3 + (?2) * interval '1' ?1)";
+				return "(?3+(?2)*interval '1' ?1)";
 		}
 	}
 

hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/RDMSOS2200Dialect.java

@@ -223,11 +223,11 @@ public class RDMSOS2200Dialect extends Dialect {
 	public String timestampaddPattern(TemporalUnit unit, TemporalType temporalType) {
 		switch (unit) {
 			case NANOSECOND:
-				return "timestampadd('SQL_TSI_FRAC_SECOND', (?2)/1e3, ?3)";
+				return "timestampadd('SQL_TSI_FRAC_SECOND',(?2)/1e3,?3)";
 			case NATIVE:
-				return "timestampadd('SQL_TSI_FRAC_SECOND', ?2, ?3)";
+				return "timestampadd('SQL_TSI_FRAC_SECOND',?2,?3)";
 			default:
-				return "dateadd('?1', ?2, ?3)";
+				return "dateadd('?1',?2,?3)";
 		}
 	}
 
@@ -235,11 +235,11 @@ public class RDMSOS2200Dialect extends Dialect {
 	public String timestampdiffPattern(TemporalUnit unit, TemporalType fromTemporalType, TemporalType toTemporalType) {
 		switch (unit) {
 			case NANOSECOND:
-				return "timestampdiff('SQL_TSI_FRAC_SECOND', ?2, ?3)*1e3";
+				return "timestampdiff('SQL_TSI_FRAC_SECOND',?2,?3)*1e3";
 			case NATIVE:
-				return "timestampdiff('SQL_TSI_FRAC_SECOND', ?2, ?3)";
+				return "timestampdiff('SQL_TSI_FRAC_SECOND',?2,?3)";
 			default:
-				return "dateadd('?1', ?2, ?3)";
+				return "dateadd('?1',?2,?3)";
 		}
 	}
 
@@ -325,7 +325,7 @@ public class RDMSOS2200Dialect extends Dialect {
 
 	@Override
 	public String getFromDual() {
-		return "from rdms.rdms_dummy where key_col = 1";
+		return "from rdms.rdms_dummy where key_col=1";
 	}
 
 	@Override

hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/RDMSOS2200SqlAstTranslator.java

@@ -138,7 +138,7 @@ public class RDMSOS2200SqlAstTranslator<T extends JdbcOperation> extends Abstrac
 
 	@Override
 	protected String getFromDual() {
-		return " from rdms.rdms_dummy where key_col = 1";
+		return " from rdms.rdms_dummy where key_col=1";
 	}
 
 	@Override

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

@@ -126,27 +126,27 @@ public class SQLiteDialect extends Dialect {
 	public String extractPattern(TemporalUnit unit) {
 		switch ( unit ) {
 			case SECOND:
-				return "cast(strftime('%S.%f', ?2) as double)";
+				return "cast(strftime('%S.%f',?2) as double)";
 			case MINUTE:
-				return "strftime('%M', ?2)";
+				return "strftime('%M',?2)";
 			case HOUR:
-				return "strftime('%H', ?2)";
+				return "strftime('%H',?2)";
 			case DAY:
 			case DAY_OF_MONTH:
-				return "(strftime('%d', ?2)+1)";
+				return "(strftime('%d',?2)+1)";
 			case MONTH:
-				return "strftime('%m', ?2)";
+				return "strftime('%m',?2)";
 			case YEAR:
-				return "strftime('%Y', ?2)";
+				return "strftime('%Y',?2)";
 			case DAY_OF_WEEK:
-				return "(strftime('%w', ?2)+1)";
+				return "(strftime('%w',?2)+1)";
 			case DAY_OF_YEAR:
-				return "strftime('%j', ?2)";
+				return "strftime('%j',?2)";
 			case EPOCH:
-				return "strftime('%s', ?2)";
+				return "strftime('%s',?2)";
 			case WEEK:
 				// Thanks https://stackoverflow.com/questions/15082584/sqlite-return-wrong-week-number-for-2013
-				return "((strftime('%j', date(?2, '-3 days', 'weekday 4'))-1)/7+1)";
+				return "((strftime('%j',date(?2,'-3 days','weekday 4'))-1)/7+1)";
 			default:
 				return super.extractPattern(unit);
 		}
@@ -158,13 +158,13 @@ public class SQLiteDialect extends Dialect {
 		switch ( unit ) {
 			case NANOSECOND:
 			case NATIVE:
-				return "datetime(?3, '+?2 seconds')";
+				return "datetime(?3,'+?2 seconds')";
 			case QUARTER: //quarter is not supported in interval literals
-				return function + "(?3, '+'||(?2*3)||' months')";
+				return function + "(?3,'+'||(?2*3)||' months')";
 			case WEEK: //week is not supported in interval literals
-				return function + "(?3, '+'||(?2*7)||' days')";
+				return function + "(?3,'+'||(?2*7)||' days')";
 			default:
-				return function + "(?3, '+?2 ?1s')";
+				return function + "(?3,'+?2 ?1s')";
 		}
 	}
 
@@ -244,20 +244,20 @@ public class SQLiteDialect extends Dialect {
 		queryEngine.getSqmFunctionRegistry().registerBinaryTernaryPattern(
 				"locate",
 				StandardBasicTypes.INTEGER,
-				"instr(?2, ?1)",
+				"instr(?2,?1)",
-				"instr(?2, ?1, ?3)"
+				"instr(?2,?1,?3)"
 		).setArgumentListSignature("(pattern, string[, start])");
 		queryEngine.getSqmFunctionRegistry().registerBinaryTernaryPattern(
 				"lpad",
 				StandardBasicTypes.STRING,
-				"(substr(replace(hex(zeroblob(?2)), '00', ' '), 1, ?2 - length(?1))||?1)",
+				"(substr(replace(hex(zeroblob(?2)),'00',' '),1,?2-length(?1))||?1)",
-				"(substr(replace(hex(zeroblob(?2)), '00', ?3), 1, ?2 - length(?1))||?1)"
+				"(substr(replace(hex(zeroblob(?2)),'00',?3),1,?2-length(?1))||?1)"
 		).setArgumentListSignature("(string, length[, padding])");
 		queryEngine.getSqmFunctionRegistry().registerBinaryTernaryPattern(
 				"rpad",
 				StandardBasicTypes.STRING,
-				"(?1||substr(replace(hex(zeroblob(?2)), '00', ' '), 1, ?2 - length(?1)))",
+				"(?1||substr(replace(hex(zeroblob(?2)),'00',' '),1,?2-length(?1)))",
-				"(?1||substr(replace(hex(zeroblob(?2)), '00', ?3), 1, ?2 - length(?1)))"
+				"(?1||substr(replace(hex(zeroblob(?2)),'00',?3),1,?2-length(?1)))"
 		).setArgumentListSignature("(string, length[, padding])");
 
 		queryEngine.getSqmFunctionRegistry().namedDescriptorBuilder("format", "strftime")
@@ -269,13 +269,13 @@ public class SQLiteDialect extends Dialect {
 		if (!supportsMathFunctions() ) {
 			queryEngine.getSqmFunctionRegistry().patternDescriptorBuilder(
 					"floor",
-					"(cast(?1 as int) - (?1 < cast(?1 as int)))"
+					"(cast(?1 as int)-(?1<cast(?1 as int)))"
 			).setReturnTypeResolver( StandardFunctionReturnTypeResolvers.useArgType( 1 ) )
 					.setExactArgumentCount( 1 )
 					.register();
 			queryEngine.getSqmFunctionRegistry().patternDescriptorBuilder(
 					"ceiling",
-					"(cast(?1 as int) + (?1 > cast(?1 as int)))"
+					"(cast(?1 as int)+(?1>cast(?1 as int)))"
 			).setReturnTypeResolver( StandardFunctionReturnTypeResolvers.useArgType( 1 ) )
 					.setExactArgumentCount( 1 )
 					.register();
@@ -288,15 +288,15 @@ public class SQLiteDialect extends Dialect {
 			case BOTH:
 				return character == ' '
 						? "trim(?1)"
-						: "trim(?1, '" + character + "')";
+						: "trim(?1,'" + character + "')";
 			case LEADING:
 				return character == ' '
 						? "ltrim(?1)"
-						: "ltrim(?1, '" + character + "')";
+						: "ltrim(?1,'" + character + "')";
 			case TRAILING:
 				return character == ' '
 						? "rtrim(?1)"
-						: "rtrim(?1, '" + character + "')";
+						: "rtrim(?1,'" + character + "')";
 		}
 		throw new UnsupportedOperationException( "Unsupported specification: " + specification );
 	}

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

@@ -7,14 +7,18 @@
 package org.hibernate.community.dialect;
 
 import java.util.List;
+import java.util.function.Consumer;
 
 import org.hibernate.LockMode;
 import org.hibernate.engine.spi.SessionFactoryImplementor;
 import org.hibernate.query.ComparisonOperator;
+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.Statement;
 import org.hibernate.sql.ast.tree.cte.CteStatement;
+import org.hibernate.sql.ast.tree.expression.CaseSearchedExpression;
+import org.hibernate.sql.ast.tree.expression.CaseSimpleExpression;
 import org.hibernate.sql.ast.tree.expression.Expression;
 import org.hibernate.sql.ast.tree.expression.Literal;
 import org.hibernate.sql.ast.tree.expression.SqlTuple;
@@ -36,6 +40,58 @@ public class SybaseAnywhereSqlAstTranslator<T extends JdbcOperation> extends Abs
 		super( sessionFactory, statement );
 	}
 
+	// Sybase Anywhere does not allow CASE expressions where all result arms contain plain parameters.
+	// At least one result arm must provide some type context for inference,
+	// so we cast the first result arm if we encounter this condition
+
+	@Override
+	protected void visitAnsiCaseSearchedExpression(
+			CaseSearchedExpression caseSearchedExpression,
+			Consumer<Expression> resultRenderer) {
+		if ( getParameterRenderingMode() == SqlAstNodeRenderingMode.DEFAULT && areAllResultsParameters( caseSearchedExpression ) ) {
+			final List<CaseSearchedExpression.WhenFragment> whenFragments = caseSearchedExpression.getWhenFragments();
+			final Expression firstResult = whenFragments.get( 0 ).getResult();
+			super.visitAnsiCaseSearchedExpression(
+					caseSearchedExpression,
+					e -> {
+						if ( e == firstResult ) {
+							renderCasted( e );
+						}
+						else {
+							resultRenderer.accept( e );
+						}
+					}
+			);
+		}
+		else {
+			super.visitAnsiCaseSearchedExpression( caseSearchedExpression, resultRenderer );
+		}
+	}
+
+	@Override
+	protected void visitAnsiCaseSimpleExpression(
+			CaseSimpleExpression caseSimpleExpression,
+			Consumer<Expression> resultRenderer) {
+		if ( getParameterRenderingMode() == SqlAstNodeRenderingMode.DEFAULT && areAllResultsParameters( caseSimpleExpression ) ) {
+			final List<CaseSimpleExpression.WhenFragment> whenFragments = caseSimpleExpression.getWhenFragments();
+			final Expression firstResult = whenFragments.get( 0 ).getResult();
+			super.visitAnsiCaseSimpleExpression(
+					caseSimpleExpression,
+					e -> {
+						if ( e == firstResult ) {
+							renderCasted( e );
+						}
+						else {
+							resultRenderer.accept( e );
+						}
+					}
+			);
+		}
+		else {
+			super.visitAnsiCaseSimpleExpression( caseSimpleExpression, resultRenderer );
+		}
+	}
+
 	@Override
 	protected boolean renderTableReference(TableReference tableReference, LockMode lockMode) {
 		super.renderTableReference( tableReference, lockMode );

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

@@ -178,7 +178,7 @@ public class TeradataDialect extends Dialect {
 	public String timestampdiffPattern(TemporalUnit unit, TemporalType fromTemporalType, TemporalType toTemporalType) {
 		StringBuilder pattern = new StringBuilder();
 		//TODO: TOTALLY UNTESTED CODE!
-		pattern.append("cast((?3 - ?2) ");
+		pattern.append("cast((?3-?2) ");
 		switch (unit) {
 			case NANOSECOND:
 			case NATIVE:
@@ -214,15 +214,15 @@ public class TeradataDialect extends Dialect {
 		//TODO: TOTALLY UNTESTED CODE!
 		switch ( unit ) {
 			case NANOSECOND:
-				return "(?3 + (?2)/1e9 * interval '1' second)";
+				return "(?3+(?2)/1e9*interval '1' second)";
 			case NATIVE:
-				return "(?3 + (?2) * interval '1' second)";
+				return "(?3+(?2)*interval '1' second)";
 			case QUARTER:
-				return "(?3 + (?2) * interval '3' month)";
+				return "(?3+(?2)*interval '3' month)";
 			case WEEK:
-				return "(?3 + (?2) * interval '7' day)";
+				return "(?3+(?2)*interval '7' day)";
 			default:
-				return "(?3 + (?2) * interval '1' ?1)";
+				return "(?3+(?2)*interval '1' ?1)";
 		}
 	}
 
@@ -238,6 +238,7 @@ public class TeradataDialect extends Dialect {
 		CommonFunctionFactory.substring_substr( queryEngine );
 		//also natively supports ANSI-style substring()
 		CommonFunctionFactory.position( queryEngine );
+		CommonFunctionFactory.bitLength_pattern( queryEngine, "octet_length(cast(?1 as char))*4" );
 
 		queryEngine.getSqmFunctionRegistry().patternDescriptorBuilder( "mod", "(?1 mod ?2)" )
 				.setInvariantType( StandardBasicTypes.STRING )

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

@@ -145,8 +145,8 @@ public class TimesTenDialect extends Dialect {
 		queryEngine.getSqmFunctionRegistry().registerBinaryTernaryPattern(
 				"locate",
 				StandardBasicTypes.INTEGER,
-				"instr(?2, ?1)",
+				"instr(?2,?1)",
-				"instr(?2, ?1, ?3)"
+				"instr(?2,?1,?3)"
 		).setArgumentListSignature("(pattern, string[, start])");
 	}
 
@@ -166,9 +166,9 @@ public class TimesTenDialect extends Dialect {
 		switch (unit) {
 			case NANOSECOND:
 			case NATIVE:
-				return "timestampadd(sql_tsi_frac_second, ?2, ?3)";
+				return "timestampadd(sql_tsi_frac_second,?2,?3)";
 			default:
-				return "timestampadd(sql_tsi_?1, ?2, ?3)";
+				return "timestampadd(sql_tsi_?1,?2,?3)";
 		}
 	}
 
@@ -177,9 +177,9 @@ public class TimesTenDialect extends Dialect {
 		switch (unit) {
 			case NANOSECOND:
 			case NATIVE:
-				return "timestampdiff(sql_tsi_frac_second, ?2, ?3)";
+				return "timestampdiff(sql_tsi_frac_second,?2,?3)";
 			default:
-				return "timestampdiff(sql_tsi_?1, ?2, ?3)";
+				return "timestampdiff(sql_tsi_?1,?2,?3)";
 		}
 	}
 

hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/sequence/RDMSSequenceSupport.java

@@ -30,7 +30,7 @@ public final class RDMSSequenceSupport implements SequenceSupport {
 	@Override
 	public String getFromDual() {
 		// The where clause was added to eliminate this statement from Brute Force Searches.
-		return " from rdms.rdms_dummy where key_col = 1";
+		return " from rdms.rdms_dummy where key_col=1";
 	}
 
 	@Override

hibernate-community-dialects/src/test/java/org/hibernate/community/dialect/InformixDialectTestCase.java

@@ -46,6 +46,8 @@ public class InformixDialectTestCase extends BaseUnitTestCase {
 
 		ssr = new StandardServiceRegistryBuilder().build();
 		queryEngine = new QueryEngine(
+				null,
+				null,
 				jpaMetamodel,
 				ValueHandlingMode.BIND,
 				dialect.getPreferredSqlTypeCodeForBoolean(),

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

@@ -819,8 +819,8 @@ public abstract class AbstractHANADialect extends Dialect {
 		queryEngine.getSqmFunctionRegistry().registerBinaryTernaryPattern(
 				"locate",
 				StandardBasicTypes.INTEGER,
-				"locate(?2, ?1)",
+				"locate(?2,?1)",
-				"locate(?2, ?1, ?3)"
+				"locate(?2,?1,?3)"
 		).setArgumentListSignature("(pattern, string[, start])");
 
 		CommonFunctionFactory.ceiling_ceil( queryEngine );
@@ -846,6 +846,7 @@ public abstract class AbstractHANADialect extends Dialect {
 		CommonFunctionFactory.format_toVarchar( queryEngine );
 		CommonFunctionFactory.currentUtcdatetimetimestamp( queryEngine );
 		CommonFunctionFactory.everyAny_sumCaseCase( queryEngine );
+		CommonFunctionFactory.bitLength_pattern( queryEngine, "length(to_binary(?1))*8" );
 	}
 
 	@Override
@@ -1421,7 +1422,7 @@ public abstract class AbstractHANADialect extends Dialect {
 				conn = connectionProvider.getConnection();
 				try ( Statement statement = conn.createStatement() ) {
 					try ( ResultSet rs = statement.executeQuery(
-							"SELECT TOP 1 VALUE, MAP(LAYER_NAME, 'DEFAULT', 1, 'SYSTEM', 2, 'DATABASE', 3, 4) AS LAYER FROM SYS.M_INIFILE_CONTENTS WHERE FILE_NAME='indexserver.ini' AND SECTION='session' AND KEY='max_lob_prefetch_size' ORDER BY LAYER DESC" ) ) {
+							"SELECT TOP 1 VALUE,MAP(LAYER_NAME,'DEFAULT',1,'SYSTEM',2,'DATABASE',3,4) AS LAYER FROM SYS.M_INIFILE_CONTENTS WHERE FILE_NAME='indexserver.ini' AND SECTION='session' AND KEY='max_lob_prefetch_size' ORDER BY LAYER DESC" ) ) {
 						// This only works if the current user has the privilege INIFILE ADMIN
 						if ( rs.next() ) {
 							maxLobPrefetchSizeDefault = rs.getInt( 1 );
@@ -1645,21 +1646,21 @@ public abstract class AbstractHANADialect extends Dialect {
 			case NANOSECOND:
 			case NATIVE:
 				if ( temporalType == TemporalType.TIME ) {
-					return "cast(add_nano100('1970-01-01 '||(?3), ?2) as time)";
+					return "cast(add_nano100('1970-01-01 '||(?3),?2) as time)";
 				}
 				else {
-					return "add_nano100(?3, ?2)";
+					return "add_nano100(?3,?2)";
 				}
 			case QUARTER:
-				return "add_months(?3, 3*?2)";
+				return "add_months(?3,3*?2)";
 			case WEEK:
-				return "add_days(?3, 7*?2)";
+				return "add_days(?3,7*?2)";
 			case MINUTE:
-				return "add_seconds(?3, 60*?2)";
+				return "add_seconds(?3,60*?2)";
 			case HOUR:
-				return "add_seconds(?3, 3600*?2)";
+				return "add_seconds(?3,3600*?2)";
 			default:
-				return "add_?1s(?3, ?2)";
+				return "add_?1s(?3,?2)";
 		}
 	}
 
@@ -1672,18 +1673,18 @@ public abstract class AbstractHANADialect extends Dialect {
 //					return "nano100_between(cast(?3 as timestamp), cast(?2 as timestamp))";
 //				}
 //				else {
-				return "nano100_between(?2, ?3)";
+				return "nano100_between(?2,?3)";
 //				}
 			case QUARTER:
-				return "months_between(?2, ?3)/3";
+				return "months_between(?2,?3)/3";
 			case WEEK:
-				return "days_between(?2, ?3)/7";
+				return "days_between(?2,?3)/7";
 			case MINUTE:
-				return "seconds_between(?2, ?3)/60";
+				return "seconds_between(?2,?3)/60";
 			case HOUR:
-				return "seconds_between(?2, ?3)/3600";
+				return "seconds_between(?2,?3)/3600";
 			default:
-				return "?1s_between(?2, ?3)";
+				return "?1s_between(?2,?3)";
 		}
 	}
 

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

@@ -229,7 +229,7 @@ public class CockroachDialect extends Dialect {
 
 	@Override
 	public String getQuerySequencesString() {
-		return "select sequence_name, sequence_schema, sequence_catalog, start_value, minimum_value, maximum_value, increment from information_schema.sequences";
+		return "select sequence_name,sequence_schema,sequence_catalog,start_value,minimum_value,maximum_value,increment from information_schema.sequences";
 	}
 
 	@Override
@@ -305,15 +305,15 @@ public class CockroachDialect extends Dialect {
 	public String timestampaddPattern(TemporalUnit unit, TemporalType temporalType) {
 		switch ( unit ) {
 			case NANOSECOND:
-				return "(?3 + (?2)/1e3 * interval '1 microsecond')";
+				return "(?3+(?2)/1e3*interval '1 microsecond')";
 			case NATIVE:
-				return "(?3 + (?2) * interval '1 microsecond')";
+				return "(?3+(?2)*interval '1 microsecond')";
 			case QUARTER: //quarter is not supported in interval literals
-				return "(?3 + (?2) * interval '3 month')";
+				return "(?3+(?2)*interval '3 month')";
 			case WEEK: //week is not supported in interval literals
-				return "(?3 + (?2) * interval '7 day')";
+				return "(?3+(?2)*interval '7 day')";
 			default:
-				return "(?3 + (?2) * interval '1 ?1')";
+				return "(?3+(?2)*interval '1 ?1')";
 		}
 	}
 

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

@@ -13,6 +13,7 @@ import org.hibernate.sql.ast.tree.cte.CteStatement;
 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.predicate.BooleanExpressionPredicate;
 import org.hibernate.sql.ast.tree.select.QueryGroup;
 import org.hibernate.sql.ast.tree.select.QueryPart;
 import org.hibernate.sql.ast.tree.select.QuerySpec;
@@ -29,6 +30,16 @@ public class CockroachSqlAstTranslator<T extends JdbcOperation> extends Abstract
 		super( sessionFactory, statement );
 	}
 
+	@Override
+	protected void renderExpressionAsClauseItem(Expression expression) {
+		expression.accept( this );
+	}
+
+	@Override
+	public void visitBooleanExpressionPredicate(BooleanExpressionPredicate booleanExpressionPredicate) {
+		booleanExpressionPredicate.getExpression().accept( this );
+	}
+
 	@Override
 	protected String getForShare() {
 		return " for share";

hibernate-core/src/main/java/org/hibernate/dialect/DB2400V7R3Dialect.java

@@ -42,8 +42,8 @@ public class DB2400V7R3Dialect extends DB2400Dialect {
 	@Override
 	public String getQuerySequencesString() {
 		return "select distinct sequence_name from qsys2.syssequences " +
-				"where ( current_schema = '*LIBL' and sequence_schema in ( select schema_name from qsys2.library_list_info ) ) " +
+				"where current_schema='*LIBL' and sequence_schema in (select schema_name from qsys2.library_list_info) " +
-				"or sequence_schema = current_schema";
+				"or sequence_schema=current_schema";
 	}
 
 	@Override
@@ -53,8 +53,8 @@ public class DB2400V7R3Dialect extends DB2400Dialect {
 			return sql + " fetch first " + limit + " rows only";
 		}
 		//nest the main query in an outer select
-		return "select * from ( select inner2_.*, rownumber() over(order by order of inner2_) as rownumber_ from ( "
+		return "select * from (select inner2_.*,rownumber() over(order by order of inner2_) as rownumber_ from ("
-				+ sql + " fetch first " + limit + " rows only ) as inner2_ ) as inner1_ where rownumber_ > "
+				+ sql + " fetch first " + limit + " rows only) as inner2_) as inner1_ where rownumber_>"
 				+ offset + " order by rownumber_";
 	}
 

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

@@ -190,6 +190,7 @@ public class DB2Dialect extends Dialect {
 		CommonFunctionFactory.addYearsMonthsDaysHoursMinutesSeconds( queryEngine );
 		CommonFunctionFactory.yearsMonthsDaysHoursMinutesSecondsBetween( queryEngine );
 		CommonFunctionFactory.dateTrunc( queryEngine );
+		CommonFunctionFactory.bitLength_pattern( queryEngine, "length(?1)*8" );
 
 		queryEngine.getSqmFunctionRegistry().register( "format", new DB2FormatEmulation() );
 
@@ -417,7 +418,7 @@ public class DB2Dialect extends Dialect {
 			default:
 				literal = "0";
 		}
-		return "nullif(" + literal + ", " + literal + ')';
+		return "nullif(" + literal + "," + literal + ')';
 	}
 
 	@Override
@@ -657,7 +658,7 @@ public class DB2Dialect extends Dialect {
 
 		return String.format(
 				Locale.ENGLISH,
-				"case when %s is null then %s else %s end, %s %s",
+				"case when %s is null then %s else %s end,%s %s",
 				expression,
 				nullPrecedence == NullPrecedence.FIRST ? "0" : "1",
 				nullPrecedence == NullPrecedence.FIRST ? "1" : "0",

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

@@ -7,16 +7,20 @@
 package org.hibernate.dialect;
 
 import java.util.List;
+import java.util.function.Consumer;
 
 import org.hibernate.query.FetchClauseType;
 import org.hibernate.engine.spi.SessionFactoryImplementor;
 import org.hibernate.query.ComparisonOperator;
 import org.hibernate.query.sqm.sql.internal.SqmParameterInterpretation;
+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.Statement;
 import org.hibernate.sql.ast.tree.delete.DeleteStatement;
+import org.hibernate.sql.ast.tree.expression.CaseSearchedExpression;
+import org.hibernate.sql.ast.tree.expression.CaseSimpleExpression;
 import org.hibernate.sql.ast.tree.expression.ColumnReference;
 import org.hibernate.sql.ast.tree.expression.Expression;
 import org.hibernate.sql.ast.tree.expression.JdbcParameter;
@@ -25,6 +29,7 @@ import org.hibernate.sql.ast.tree.expression.NullnessLiteral;
 import org.hibernate.sql.ast.tree.expression.SqlTuple;
 import org.hibernate.sql.ast.tree.expression.Summarization;
 import org.hibernate.sql.ast.tree.insert.InsertStatement;
+import org.hibernate.sql.ast.tree.predicate.BooleanExpressionPredicate;
 import org.hibernate.sql.ast.tree.select.QueryGroup;
 import org.hibernate.sql.ast.tree.select.QueryPart;
 import org.hibernate.sql.ast.tree.select.QuerySpec;
@@ -42,6 +47,73 @@ public class DB2SqlAstTranslator<T extends JdbcOperation> extends AbstractSqlAst
 		super( sessionFactory, statement );
 	}
 
+	@Override
+	protected void renderExpressionAsClauseItem(Expression expression) {
+		expression.accept( this );
+	}
+
+	@Override
+	public void visitBooleanExpressionPredicate(BooleanExpressionPredicate booleanExpressionPredicate) {
+		if ( getDialect().getVersion() >= 1100 ) {
+			booleanExpressionPredicate.getExpression().accept( this );
+		}
+		else {
+			super.visitBooleanExpressionPredicate( booleanExpressionPredicate );
+		}
+	}
+
+	// DB2 does not allow CASE expressions where all result arms contain plain parameters.
+	// At least one result arm must provide some type context for inference,
+	// so we cast the first result arm if we encounter this condition
+
+	@Override
+	protected void visitAnsiCaseSearchedExpression(
+			CaseSearchedExpression caseSearchedExpression,
+			Consumer<Expression> resultRenderer) {
+		if ( getParameterRenderingMode() == SqlAstNodeRenderingMode.DEFAULT && areAllResultsParameters( caseSearchedExpression ) ) {
+			final List<CaseSearchedExpression.WhenFragment> whenFragments = caseSearchedExpression.getWhenFragments();
+			final Expression firstResult = whenFragments.get( 0 ).getResult();
+			super.visitAnsiCaseSearchedExpression(
+					caseSearchedExpression,
+					e -> {
+						if ( e == firstResult ) {
+							renderCasted( e );
+						}
+						else {
+							resultRenderer.accept( e );
+						}
+					}
+			);
+		}
+		else {
+			super.visitAnsiCaseSearchedExpression( caseSearchedExpression, resultRenderer );
+		}
+	}
+
+	@Override
+	protected void visitAnsiCaseSimpleExpression(
+			CaseSimpleExpression caseSimpleExpression,
+			Consumer<Expression> resultRenderer) {
+		if ( getParameterRenderingMode() == SqlAstNodeRenderingMode.DEFAULT && areAllResultsParameters( caseSimpleExpression ) ) {
+			final List<CaseSimpleExpression.WhenFragment> whenFragments = caseSimpleExpression.getWhenFragments();
+			final Expression firstResult = whenFragments.get( 0 ).getResult();
+			super.visitAnsiCaseSimpleExpression(
+					caseSimpleExpression,
+					e -> {
+						if ( e == firstResult ) {
+							renderCasted( e );
+						}
+						else {
+							resultRenderer.accept( e );
+						}
+					}
+			);
+		}
+		else {
+			super.visitAnsiCaseSimpleExpression( caseSimpleExpression, resultRenderer );
+		}
+	}
+
 	@Override
 	protected String getForUpdate() {
 		return " for read only with rs use and keep update locks";
@@ -146,7 +218,7 @@ public class DB2SqlAstTranslator<T extends JdbcOperation> extends AbstractSqlAst
 		for ( int i = 0; i < size; i++ ) {
 			appendSql( separator );
 			appendSql( returningColumns.get( i ).getColumnExpression() );
-			separator = ", ";
+			separator = ",";
 		}
 		if ( statement instanceof DeleteStatement ) {
 			appendSql( " from old table (" );

hibernate-core/src/main/java/org/hibernate/dialect/DB2iDialect.java

@@ -79,8 +79,8 @@ public class DB2iDialect extends DB2Dialect {
 	public String getQuerySequencesString() {
 		if ( getIVersion() >= 730 ) {
 			return "select distinct sequence_name from qsys2.syssequences " +
-					"where ( current_schema = '*LIBL' and sequence_schema in ( select schema_name from qsys2.library_list_info ) ) " +
+					"where current_schema='*LIBL' and sequence_schema in (select schema_name from qsys2.library_list_info) " +
-					"or sequence_schema = current_schema";
+					"or sequence_schema=current_schema";
 		}
 		else {
 			return null;

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

@@ -11,6 +11,7 @@ import org.hibernate.NotYetImplementedFor6Exception;
 import org.hibernate.boot.TempTableDdlTransactionHandling;
 import org.hibernate.cfg.Environment;
 import org.hibernate.dialect.function.CommonFunctionFactory;
+import org.hibernate.dialect.function.DerbyConcatFunction;
 import org.hibernate.dialect.function.DerbyLpadEmulation;
 import org.hibernate.dialect.function.DerbyRpadEmulation;
 import org.hibernate.dialect.function.CaseLeastGreatestEmulation;
@@ -183,6 +184,9 @@ public class DerbyDialect extends Dialect {
 	public void initializeFunctionRegistry(QueryEngine queryEngine) {
 		super.initializeFunctionRegistry( queryEngine );
 
+		// Derby needs an actual argument type for aggregates like SUM, AVG, MIN, MAX to determine the result type
+		CommonFunctionFactory.aggregates( queryEngine, SqlAstNodeRenderingMode.NO_PLAIN_PARAMETER );
+
 		CommonFunctionFactory.concat_pipeOperator( queryEngine );
 		CommonFunctionFactory.cot( queryEngine );
 		CommonFunctionFactory.chr_char( queryEngine );
@@ -209,6 +213,8 @@ public class DerbyDialect extends Dialect {
 				.setExactArgumentCount( 2 )
 				.register();
 
+		queryEngine.getSqmFunctionRegistry().register( "concat", new DerbyConcatFunction() );
+
 		//no way I can see to pad with anything other than spaces
 		queryEngine.getSqmFunctionRegistry().register( "lpad", new DerbyLpadEmulation() );
 		queryEngine.getSqmFunctionRegistry().register( "rpad", new DerbyRpadEmulation() );
@@ -252,14 +258,14 @@ public class DerbyDialect extends Dialect {
 			case DAY_OF_MONTH:
 				return "day(?2)";
 			case DAY_OF_YEAR:
-				return "({fn timestampdiff(sql_tsi_day, date(char(year(?2),4)||'-01-01'),?2)}+1)";
+				return "({fn timestampdiff(sql_tsi_day,date(char(year(?2),4)||'-01-01'),?2)}+1)";
 			case DAY_OF_WEEK:
 				// Use the approach as outlined here: https://stackoverflow.com/questions/36357013/day-of-week-from-seconds-since-epoch
-				return "(mod(mod({fn timestampdiff(sql_tsi_day, {d '1970-01-01'}, ?2)}+4,7)+7,7)+1)";
+				return "(mod(mod({fn timestampdiff(sql_tsi_day,{d '1970-01-01'},?2)}+4,7)+7,7)+1)";
 			case WEEK:
 				// Use the approach as outlined here: https://www.sqlservercentral.com/articles/a-simple-formula-to-calculate-the-iso-week-number
 				// In SQL Server terms this is (DATEPART(dy,DATEADD(dd,DATEDIFF(dd,'17530101',@SomeDate)/7*7,'17530104'))+6)/7
-				return "(({fn timestampdiff(sql_tsi_day, date(char(year(?2),4)||'-01-01'),{fn timestampadd(sql_tsi_day, {fn timestampdiff(sql_tsi_day, {d '1753-01-01'}, ?2)}/7*7, {d '1753-01-04'})})}+7)/7)";
+				return "(({fn timestampdiff(sql_tsi_day,date(char(year(?2),4)||'-01-01'),{fn timestampadd(sql_tsi_day,{fn timestampdiff(sql_tsi_day,{d '1753-01-01'},?2)}/7*7,{d '1753-01-04'})})}+7)/7)";
 			case QUARTER:
 				return "((month(?2)+2)/3)";
 			default:
@@ -320,9 +326,9 @@ public class DerbyDialect extends Dialect {
 		switch (unit) {
 			case NANOSECOND:
 			case NATIVE:
-				return "{fn timestampadd(sql_tsi_frac_second, mod(bigint(?2),1000000000), {fn timestampadd(sql_tsi_second, bigint((?2)/1000000000), ?3)})}";
+				return "{fn timestampadd(sql_tsi_frac_second,mod(bigint(?2),1000000000),{fn timestampadd(sql_tsi_second,bigint((?2)/1000000000),?3)})}";
 			default:
-				return "{fn timestampadd(sql_tsi_?1, bigint(?2), ?3)}";
+				return "{fn timestampadd(sql_tsi_?1,bigint(?2),?3)}";
 		}
 	}
 
@@ -331,9 +337,9 @@ public class DerbyDialect extends Dialect {
 		switch (unit) {
 			case NANOSECOND:
 			case NATIVE:
-				return "{fn timestampdiff(sql_tsi_frac_second, ?2, ?3)}";
+				return "{fn timestampdiff(sql_tsi_frac_second,?2,?3)}";
 			default:
-				return "{fn timestampdiff(sql_tsi_?1, ?2, ?3)}";
+				return "{fn timestampdiff(sql_tsi_?1,?2,?3)}";
 		}
 	}
 
@@ -368,7 +374,7 @@ public class DerbyDialect extends Dialect {
 	public String getQuerySequencesString() {
 		return getVersion() < 1060
 				? null
-				: "select sys.sysschemas.schemaname as sequence_schema, sys.syssequences.* from sys.syssequences left join sys.sysschemas on sys.syssequences.schemaid = sys.sysschemas.schemaid";
+				: "select sys.sysschemas.schemaname as sequence_schema,sys.syssequences.* from sys.syssequences left join sys.sysschemas on sys.syssequences.schemaid=sys.sysschemas.schemaid";
 	}
 
 	@Override

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

@@ -7,24 +7,24 @@
 package org.hibernate.dialect;
 
 import java.util.List;
+import java.util.function.Consumer;
 
 import org.hibernate.engine.spi.SessionFactoryImplementor;
 import org.hibernate.query.ComparisonOperator;
-import org.hibernate.query.sqm.sql.internal.SqmParameterInterpretation;
+import org.hibernate.sql.ast.SqlAstNodeRenderingMode;
-import org.hibernate.sql.ast.SqlAstWalker;
 import org.hibernate.sql.ast.spi.AbstractSqlAstTranslator;
 import org.hibernate.sql.ast.spi.SqlSelection;
 import org.hibernate.sql.ast.tree.Statement;
 import org.hibernate.sql.ast.tree.cte.CteContainer;
 import org.hibernate.sql.ast.tree.cte.CteStatement;
 import org.hibernate.sql.ast.tree.expression.CaseSearchedExpression;
+import org.hibernate.sql.ast.tree.expression.CaseSimpleExpression;
 import org.hibernate.sql.ast.tree.expression.Expression;
-import org.hibernate.sql.ast.tree.expression.JdbcParameter;
 import org.hibernate.sql.ast.tree.expression.Literal;
-import org.hibernate.sql.ast.tree.expression.NullnessLiteral;
-import org.hibernate.sql.ast.tree.expression.QueryLiteral;
 import org.hibernate.sql.ast.tree.expression.SqlTuple;
 import org.hibernate.sql.ast.tree.expression.Summarization;
+import org.hibernate.sql.ast.tree.predicate.BooleanExpressionPredicate;
+import org.hibernate.sql.ast.tree.predicate.InListPredicate;
 import org.hibernate.sql.ast.tree.select.QueryPart;
 import org.hibernate.sql.exec.spi.JdbcOperation;
 
@@ -39,6 +39,68 @@ public class DerbySqlAstTranslator<T extends JdbcOperation> extends AbstractSqlA
 		super( sessionFactory, statement );
 	}
 
+	@Override
+	protected void renderExpressionAsClauseItem(Expression expression) {
+		expression.accept( this );
+	}
+
+	@Override
+	public void visitBooleanExpressionPredicate(BooleanExpressionPredicate booleanExpressionPredicate) {
+		booleanExpressionPredicate.getExpression().accept( this );
+	}
+
+	// Derby does not allow CASE expressions where all result arms contain plain parameters.
+	// At least one result arm must provide some type context for inference,
+	// so we cast the first result arm if we encounter this condition
+
+	@Override
+	protected void visitAnsiCaseSearchedExpression(
+			CaseSearchedExpression caseSearchedExpression,
+			Consumer<Expression> resultRenderer) {
+		if ( getParameterRenderingMode() == SqlAstNodeRenderingMode.DEFAULT && areAllResultsParameters( caseSearchedExpression ) ) {
+			final List<CaseSearchedExpression.WhenFragment> whenFragments = caseSearchedExpression.getWhenFragments();
+			final Expression firstResult = whenFragments.get( 0 ).getResult();
+			super.visitAnsiCaseSearchedExpression(
+					caseSearchedExpression,
+					e -> {
+						if ( e == firstResult ) {
+							renderCasted( e );
+						}
+						else {
+							resultRenderer.accept( e );
+						}
+					}
+			);
+		}
+		else {
+			super.visitAnsiCaseSearchedExpression( caseSearchedExpression, resultRenderer );
+		}
+	}
+
+	@Override
+	protected void visitAnsiCaseSimpleExpression(
+			CaseSimpleExpression caseSimpleExpression,
+			Consumer<Expression> resultRenderer) {
+		if ( getParameterRenderingMode() == SqlAstNodeRenderingMode.DEFAULT && areAllResultsParameters( caseSimpleExpression ) ) {
+			final List<CaseSimpleExpression.WhenFragment> whenFragments = caseSimpleExpression.getWhenFragments();
+			final Expression firstResult = whenFragments.get( 0 ).getResult();
+			super.visitAnsiCaseSimpleExpression(
+					caseSimpleExpression,
+					e -> {
+						if ( e == firstResult ) {
+							renderCasted( e );
+						}
+						else {
+							resultRenderer.accept( e );
+						}
+					}
+			);
+		}
+		else {
+			super.visitAnsiCaseSimpleExpression( caseSimpleExpression, resultRenderer );
+		}
+	}
+
 	@Override
 	protected String getForUpdate() {
 		return " for update";
@@ -139,6 +201,28 @@ public class DerbySqlAstTranslator<T extends JdbcOperation> extends AbstractSqlA
 		}
 	}
 
+	@Override
+	public void visitInListPredicate(InListPredicate inListPredicate) {
+		final List<Expression> listExpressions = inListPredicate.getListExpressions();
+		if ( listExpressions.isEmpty() ) {
+			appendSql( "1=0" );
+			return;
+		}
+		final Expression testExpression = inListPredicate.getTestExpression();
+		if ( isParameter( testExpression ) ) {
+			renderCasted( testExpression );
+			if ( inListPredicate.isNegated() ) {
+				appendSql( " not" );
+			}
+			appendSql( " in(" );
+			renderCommaSeparated( listExpressions );
+			appendSql( CLOSE_PARENTHESIS );
+		}
+		else {
+			super.visitInListPredicate( inListPredicate );
+		}
+	}
+
 	@Override
 	protected boolean supportsRowValueConstructorSyntax() {
 		return false;
@@ -156,7 +240,7 @@ public class DerbySqlAstTranslator<T extends JdbcOperation> extends AbstractSqlA
 
 	@Override
 	protected String getFromDual() {
-		return " from (values 0) as dual";
+		return " from (values 0) dual";
 	}
 
 	@Override

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

@@ -70,6 +70,7 @@ import org.hibernate.query.sqm.mutation.spi.SqmMultiTableMutationStrategy;
 import org.hibernate.query.sqm.sql.SqmTranslatorFactory;
 import org.hibernate.service.ServiceRegistry;
 import org.hibernate.sql.*;
+import org.hibernate.sql.ast.SqlAstNodeRenderingMode;
 import org.hibernate.sql.ast.SqlAstTranslatorFactory;
 import org.hibernate.sql.ast.spi.AbstractSqlAstTranslator;
 import org.hibernate.sql.ast.spi.StandardSqlAstTranslatorFactory;
@@ -475,7 +476,7 @@ public abstract class Dialect implements ConversionContext {
 
 		//aggregate functions, supported on every database
 
-		CommonFunctionFactory.aggregates( queryEngine );
+		CommonFunctionFactory.aggregates( queryEngine, SqlAstNodeRenderingMode.DEFAULT );
 
 		//the ANSI SQL-defined aggregate functions any() and every() are only
 		//supported on one database, but can be emulated using sum() and case,

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

@@ -41,6 +41,7 @@ import org.hibernate.query.sqm.mutation.internal.idtable.AfterUseAction;
 import org.hibernate.query.sqm.mutation.internal.idtable.IdTable;
 import org.hibernate.query.sqm.mutation.internal.idtable.LocalTemporaryTableStrategy;
 import org.hibernate.query.sqm.mutation.spi.SqmMultiTableMutationStrategy;
+import org.hibernate.sql.ast.SqlAstNodeRenderingMode;
 import org.hibernate.sql.ast.SqlAstTranslator;
 import org.hibernate.sql.ast.SqlAstTranslatorFactory;
 import org.hibernate.sql.ast.spi.StandardSqlAstTranslatorFactory;
@@ -155,6 +156,9 @@ public class H2Dialect extends Dialect {
 	public void initializeFunctionRegistry(QueryEngine queryEngine) {
 		super.initializeFunctionRegistry( queryEngine );
 
+		// H2 needs an actual argument type for aggregates like SUM, AVG, MIN, MAX to determine the result type
+		CommonFunctionFactory.aggregates( queryEngine, SqlAstNodeRenderingMode.NO_PLAIN_PARAMETER );
+
 		CommonFunctionFactory.pi( queryEngine );
 		CommonFunctionFactory.cot( queryEngine );
 		CommonFunctionFactory.radians( queryEngine );
@@ -246,13 +250,13 @@ public class H2Dialect extends Dialect {
 
 	@Override
 	public String timestampaddPattern(TemporalUnit unit, TemporalType temporalType) {
-		return "dateadd(?1, ?2, ?3)";
+		return "dateadd(?1,?2,?3)";
 
 	}
 
 	@Override
 	public String timestampdiffPattern(TemporalUnit unit, TemporalType fromTemporalType, TemporalType toTemporalType) {
-		return "datediff(?1, ?2, ?3)";
+		return "datediff(?1,?2,?3)";
 	}
 
 	@Override

hibernate-core/src/main/java/org/hibernate/dialect/H2SqlAstTranslator.java

@@ -18,6 +18,7 @@ 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.predicate.BooleanExpressionPredicate;
 import org.hibernate.sql.ast.tree.select.QueryPart;
 import org.hibernate.sql.exec.spi.JdbcOperation;
 
@@ -32,6 +33,16 @@ public class H2SqlAstTranslator<T extends JdbcOperation> extends AbstractSqlAstT
 		super( sessionFactory, statement );
 	}
 
+	@Override
+	protected void renderExpressionAsClauseItem(Expression expression) {
+		expression.accept( this );
+	}
+
+	@Override
+	public void visitBooleanExpressionPredicate(BooleanExpressionPredicate booleanExpressionPredicate) {
+		booleanExpressionPredicate.getExpression().accept( this );
+	}
+
 	@Override
 	public void visitOffsetFetchClause(QueryPart queryPart) {
 		if ( isRowsOnlyFetchClauseType( queryPart ) ) {

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

@@ -284,13 +284,13 @@ public class HSQLDialect extends Dialect {
 		switch (unit) {
 			case NANOSECOND:
 			case NATIVE:
-				pattern.append("timestampadd(sql_tsi_frac_second, ?2, "); //nanos
+				pattern.append("timestampadd(sql_tsi_frac_second,?2,"); //nanos
 				break;
 			case WEEK:
-				pattern.append("dateadd('day', ?2*7, ");
+				pattern.append("dateadd('day',?2*7,");
 				break;
 			default:
-				pattern.append("dateadd('?1', ?2, ");
+				pattern.append("dateadd('?1',?2,");
 		}
 		if (castTo) {
 			pattern.append("cast(?3 as timestamp)");
@@ -317,14 +317,14 @@ public class HSQLDialect extends Dialect {
 			default:
 				pattern.append("datediff('?1'");
 		}
-		pattern.append(", ");
+		pattern.append(',');
 		if (castFrom) {
 			pattern.append("cast(?2 as timestamp)");
 		}
 		else {
 			pattern.append("?2");
 		}
-		pattern.append(", ");
+		pattern.append(',');
 		if (castTo) {
 			pattern.append("cast(?3 as timestamp)");
 		}

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

@@ -7,6 +7,7 @@
 package org.hibernate.dialect;
 
 import java.util.List;
+import java.util.function.Consumer;
 
 import org.hibernate.engine.spi.SessionFactoryImplementor;
 import org.hibernate.query.ComparisonOperator;
@@ -15,10 +16,13 @@ import org.hibernate.sql.ast.spi.AbstractSqlAstTranslator;
 import org.hibernate.sql.ast.spi.SqlSelection;
 import org.hibernate.sql.ast.tree.Statement;
 import org.hibernate.sql.ast.tree.cte.CteStatement;
+import org.hibernate.sql.ast.tree.expression.CaseSearchedExpression;
+import org.hibernate.sql.ast.tree.expression.CaseSimpleExpression;
 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.predicate.BooleanExpressionPredicate;
 import org.hibernate.sql.ast.tree.select.QueryPart;
 import org.hibernate.sql.ast.tree.select.QuerySpec;
 import org.hibernate.sql.exec.spi.JdbcOperation;
@@ -34,6 +38,68 @@ public class HSQLSqlAstTranslator<T extends JdbcOperation> extends AbstractSqlAs
 		super( sessionFactory, statement );
 	}
 
+	@Override
+	protected void renderExpressionAsClauseItem(Expression expression) {
+		expression.accept( this );
+	}
+
+	@Override
+	public void visitBooleanExpressionPredicate(BooleanExpressionPredicate booleanExpressionPredicate) {
+		booleanExpressionPredicate.getExpression().accept( this );
+	}
+
+	// HSQL does not allow CASE expressions where all result arms contain plain parameters.
+	// At least one result arm must provide some type context for inference,
+	// so we cast the first result arm if we encounter this condition
+
+	@Override
+	protected void visitAnsiCaseSearchedExpression(
+			CaseSearchedExpression caseSearchedExpression,
+			Consumer<Expression> resultRenderer) {
+		if ( getParameterRenderingMode() == SqlAstNodeRenderingMode.DEFAULT && areAllResultsParameters( caseSearchedExpression ) ) {
+			final List<CaseSearchedExpression.WhenFragment> whenFragments = caseSearchedExpression.getWhenFragments();
+			final Expression firstResult = whenFragments.get( 0 ).getResult();
+			super.visitAnsiCaseSearchedExpression(
+					caseSearchedExpression,
+					e -> {
+						if ( e == firstResult ) {
+							renderCasted( e );
+						}
+						else {
+							resultRenderer.accept( e );
+						}
+					}
+			);
+		}
+		else {
+			super.visitAnsiCaseSearchedExpression( caseSearchedExpression, resultRenderer );
+		}
+	}
+
+	@Override
+	protected void visitAnsiCaseSimpleExpression(
+			CaseSimpleExpression caseSimpleExpression,
+			Consumer<Expression> resultRenderer) {
+		if ( getParameterRenderingMode() == SqlAstNodeRenderingMode.DEFAULT && areAllResultsParameters( caseSimpleExpression ) ) {
+			final List<CaseSimpleExpression.WhenFragment> whenFragments = caseSimpleExpression.getWhenFragments();
+			final Expression firstResult = whenFragments.get( 0 ).getResult();
+			super.visitAnsiCaseSimpleExpression(
+					caseSimpleExpression,
+					e -> {
+						if ( e == firstResult ) {
+							renderCasted( e );
+						}
+						else {
+							resultRenderer.accept( e );
+						}
+					}
+			);
+		}
+		else {
+			super.visitAnsiCaseSimpleExpression( caseSimpleExpression, resultRenderer );
+		}
+	}
+
 	@Override
 	public boolean supportsFilterClause() {
 		return true;
@@ -98,9 +164,7 @@ public class HSQLSqlAstTranslator<T extends JdbcOperation> extends AbstractSqlAs
 			case NOT_DISTINCT_FROM:
 				// HSQL does not like parameters in the distinct from predicate
 				render( lhs, SqlAstNodeRenderingMode.NO_PLAIN_PARAMETER );
-				appendSql( " " );
 				appendSql( operator.sqlText() );
-				appendSql( " " );
 				render( rhs, SqlAstNodeRenderingMode.NO_PLAIN_PARAMETER );
 				break;
 			default:

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

@@ -131,7 +131,7 @@ public class MariaDBDialect extends MySQLDialect {
 	@Override
 	public String getQuerySequencesString() {
 		return getSequenceSupport().supportsSequences()
-				? "select table_name from information_schema.TABLES where table_schema = database() and table_type = 'SEQUENCE'"
+				? "select table_name from information_schema.TABLES where table_schema=database() and table_type='SEQUENCE'"
 				: super.getQuerySequencesString(); //fancy way to write "null"
 	}
 

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

@@ -14,6 +14,7 @@ import org.hibernate.sql.ast.tree.cte.CteStatement;
 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.predicate.BooleanExpressionPredicate;
 import org.hibernate.sql.ast.tree.select.QueryGroup;
 import org.hibernate.sql.ast.tree.select.QueryPart;
 import org.hibernate.sql.ast.tree.select.QuerySpec;
@@ -30,6 +31,16 @@ public class MariaDBSqlAstTranslator<T extends JdbcOperation> extends AbstractSq
 		super( sessionFactory, statement );
 	}
 
+	@Override
+	protected void renderExpressionAsClauseItem(Expression expression) {
+		expression.accept( this );
+	}
+
+	@Override
+	public void visitBooleanExpressionPredicate(BooleanExpressionPredicate booleanExpressionPredicate) {
+		booleanExpressionPredicate.getExpression().accept( this );
+	}
+
 	@Override
 	protected String getForShare() {
 		return " lock in share mode";

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

@@ -465,11 +465,11 @@ public class MySQLDialect extends Dialect {
 	public String timestampaddPattern(TemporalUnit unit, TemporalType temporalType) {
 		switch (unit) {
 			case NANOSECOND:
-				return "timestampadd(microsecond, (?2)/1e3, ?3)";
+				return "timestampadd(microsecond,(?2)/1e3,?3)";
 			case NATIVE:
-				return "timestampadd(microsecond, ?2, ?3)";
+				return "timestampadd(microsecond,?2,?3)";
 			default:
-				return "timestampadd(?1, ?2, ?3)";
+				return "timestampadd(?1,?2,?3)";
 		}
 	}
 
@@ -477,11 +477,11 @@ public class MySQLDialect extends Dialect {
 	public String timestampdiffPattern(TemporalUnit unit, TemporalType fromTemporalType, TemporalType toTemporalType) {
 		switch (unit) {
 			case NANOSECOND:
-				return "timestampdiff(microsecond, ?2, ?3)*1e3";
+				return "timestampdiff(microsecond,?2,?3)*1e3";
 			case NATIVE:
-				return "timestampdiff(microsecond, ?2, ?3)";
+				return "timestampdiff(microsecond,?2,?3)";
 			default:
-				return "timestampdiff(?1, ?2, ?3)";
+				return "timestampdiff(?1,?2,?3)";
 		}
 	}
 
@@ -773,7 +773,7 @@ public class MySQLDialect extends Dialect {
 			else {
 				orderByElement.append( "1 else 0" );
 			}
-			orderByElement.append( " end, " );
+			orderByElement.append( " end," );
 		}
 		// Nulls precedence has already been handled so passing NONE value.
 		orderByElement.append( super.renderOrderByElement( expression, collation, order, NullPrecedence.NONE ) );

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

@@ -14,6 +14,7 @@ import org.hibernate.sql.ast.tree.cte.CteStatement;
 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.predicate.BooleanExpressionPredicate;
 import org.hibernate.sql.ast.tree.select.QueryGroup;
 import org.hibernate.sql.ast.tree.select.QueryPart;
 import org.hibernate.sql.ast.tree.select.QuerySpec;
@@ -30,6 +31,16 @@ public class MySQLSqlAstTranslator<T extends JdbcOperation> extends AbstractSqlA
 		super( sessionFactory, statement );
 	}
 
+	@Override
+	protected void renderExpressionAsClauseItem(Expression expression) {
+		expression.accept( this );
+	}
+
+	@Override
+	public void visitBooleanExpressionPredicate(BooleanExpressionPredicate booleanExpressionPredicate) {
+		booleanExpressionPredicate.getExpression().accept( this );
+	}
+
 	@Override
 	protected String getForShare() {
 		return getDialect().getVersion() >= 800 ? " for share" : " lock in share mode";

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

@@ -172,6 +172,7 @@ public class OracleDialect extends Dialect {
 		CommonFunctionFactory.covarPopSamp( queryEngine );
 		CommonFunctionFactory.corr( queryEngine );
 		CommonFunctionFactory.regrLinearRegressionAggregates( queryEngine );
+		CommonFunctionFactory.bitLength_pattern( queryEngine, "vsize(?1)*8" );
 
 		if ( getVersion() < 900 ) {
 			queryEngine.getSqmFunctionRegistry().register( "coalesce", new NvlCoalesceEmulation() );
@@ -184,8 +185,8 @@ public class OracleDialect extends Dialect {
 		queryEngine.getSqmFunctionRegistry().registerBinaryTernaryPattern(
 				"locate",
 				StandardBasicTypes.INTEGER,
-				"instr(?2, ?1)",
+				"instr(?2,?1)",
-				"instr(?2, ?1, ?3)"
+				"instr(?2,?1,?3)"
 		).setArgumentListSignature("(pattern, string[, start])");
 	}
 
@@ -367,7 +368,7 @@ public class OracleDialect extends Dialect {
 	@Override
 	public String timestampaddPattern(TemporalUnit unit, TemporalType temporalType) {
 		StringBuilder pattern = new StringBuilder();
-		pattern.append("(?3 + ");
+		pattern.append("(?3+");
 		switch ( unit ) {
 			case YEAR:
 			case QUARTER:
@@ -1005,7 +1006,7 @@ public class OracleDialect extends Dialect {
 
 	@Override
 	public String getCurrentSchemaCommand() {
-		return "SELECT SYS_CONTEXT('USERENV', 'CURRENT_SCHEMA') FROM DUAL";
+		return "SELECT SYS_CONTEXT('USERENV','CURRENT_SCHEMA') FROM DUAL";
 	}
 
 	@Override

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

@@ -163,7 +163,7 @@ public class OracleSqlAstTranslator<T extends JdbcOperation> extends AbstractSql
 								appendSql( ')' );
 							}
 						}
-						appendSql( " where rownum <= " );
+						appendSql( " where rownum<=" );
 						final Stack<Clause> clauseStack = getClauseStack();
 						clauseStack.push( Clause.WHERE );
 						try {
@@ -307,7 +307,7 @@ public class OracleSqlAstTranslator<T extends JdbcOperation> extends AbstractSql
 			visitDecodeCaseSearchedExpression( caseSearchedExpression );
 		}
 		else {
-			visitAnsiCaseSearchedExpression( caseSearchedExpression );
+			super.visitCaseSearchedExpression( caseSearchedExpression, inSelect );
 		}
 	}
 

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

@@ -175,15 +175,15 @@ public class PostgreSQLDialect extends Dialect {
 	public String timestampaddPattern(TemporalUnit unit, TemporalType temporalType) {
 		switch ( unit ) {
 			case NANOSECOND:
-				return "(?3 + (?2)/1e3 * interval '1 microsecond')";
+				return "(?3+(?2)/1e3*interval '1 microsecond')";
 			case NATIVE:
-				return "(?3 + (?2) * interval '1 second')";
+				return "(?3+(?2)*interval '1 second')";
 			case QUARTER: //quarter is not supported in interval literals
-				return "(?3 + (?2) * interval '3 month')";
+				return "(?3+(?2)*interval '3 month')";
 			case WEEK: //week is not supported in interval literals
-				return "(?3 + (?2) * interval '7 day')";
+				return "(?3+(?2)*interval '7 day')";
 			default:
-				return "(?3 + (?2) * interval '1 ?1')";
+				return "(?3+(?2)*interval '1 ?1')";
 		}
 	}
 
@@ -324,7 +324,7 @@ public class PostgreSQLDialect extends Dialect {
 				"locate",
 				StandardBasicTypes.INTEGER,
 				"position(?1 in ?2)",
-				"(position(?1 in substring(?2 from ?3)) + (?3) - 1)"
+				"(position(?1 in substring(?2 from ?3))+(?3)-1)"
 		).setArgumentListSignature("(pattern, string[, start])");
 
 		if ( getVersion() >= 940 ) {

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

@@ -15,6 +15,7 @@ import org.hibernate.sql.ast.tree.cte.CteStatement;
 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.predicate.BooleanExpressionPredicate;
 import org.hibernate.sql.ast.tree.select.QueryGroup;
 import org.hibernate.sql.ast.tree.select.QueryPart;
 import org.hibernate.sql.ast.tree.select.QuerySpec;
@@ -31,6 +32,16 @@ public class PostgreSQLSqlAstTranslator<T extends JdbcOperation> extends Abstrac
 		super( sessionFactory, statement );
 	}
 
+	@Override
+	protected void renderExpressionAsClauseItem(Expression expression) {
+		expression.accept( this );
+	}
+
+	@Override
+	public void visitBooleanExpressionPredicate(BooleanExpressionPredicate booleanExpressionPredicate) {
+		booleanExpressionPredicate.getExpression().accept( this );
+	}
+
 	@Override
 	protected void renderMaterializationHint(CteMaterialization materialization) {
 		if ( getDialect().getVersion() >= 1200 ) {

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

@@ -148,6 +148,7 @@ public class SQLServerDialect extends AbstractTransactSQLDialect {
 
 		CommonFunctionFactory.truncate_round( queryEngine );
 		CommonFunctionFactory.everyAny_sumIif( queryEngine );
+		CommonFunctionFactory.bitLength_pattern( queryEngine, "datalength(?1) * 8" );
 
 		if ( getVersion() >= 10 ) {
 			CommonFunctionFactory.locate_charindex( queryEngine );
@@ -237,7 +238,7 @@ public class SQLServerDialect extends AbstractTransactSQLDialect {
 
 	@Override
 	public String currentTime() {
-		return "convert(time, getdate())";
+		return "convert(time,getdate())";
 	}
 
 	@Override
@@ -298,24 +299,24 @@ public class SQLServerDialect extends AbstractTransactSQLDialect {
 				lockMode = lockOptions.getLockMode();
 			}
 
-			final String writeLockStr = lockOptions.getTimeOut() == LockOptions.SKIP_LOCKED ? "updlock" : "updlock, holdlock";
+			final String writeLockStr = lockOptions.getTimeOut() == LockOptions.SKIP_LOCKED ? "updlock" : "updlock,holdlock";
 			final String readLockStr = lockOptions.getTimeOut() == LockOptions.SKIP_LOCKED ? "updlock" : "holdlock";
 
-			final String noWaitStr = lockOptions.getTimeOut() == LockOptions.NO_WAIT ? ", nowait" : "";
+			final String noWaitStr = lockOptions.getTimeOut() == LockOptions.NO_WAIT ? ",nowait" : "";
-			final String skipLockStr = lockOptions.getTimeOut() == LockOptions.SKIP_LOCKED ? ", readpast" : "";
+			final String skipLockStr = lockOptions.getTimeOut() == LockOptions.SKIP_LOCKED ? ",readpast" : "";
 
 			switch ( lockMode ) {
 				//noinspection deprecation
 				case UPGRADE:
 				case PESSIMISTIC_WRITE:
 				case WRITE:
-					return tableName + " with (" + writeLockStr + ", rowlock" + noWaitStr + skipLockStr + ")";
+					return tableName + " with (" + writeLockStr + ",rowlock" + noWaitStr + skipLockStr + ")";
 				case PESSIMISTIC_READ:
-					return tableName + " with (" + readLockStr + ", rowlock" + noWaitStr + skipLockStr + ")";
+					return tableName + " with (" + readLockStr + ",rowlock" + noWaitStr + skipLockStr + ")";
 				case UPGRADE_SKIPLOCKED:
-					return tableName + " with (updlock, rowlock, readpast" + noWaitStr + ")";
+					return tableName + " with (updlock,rowlock,readpast" + noWaitStr + ")";
 				case UPGRADE_NOWAIT:
-					return tableName + " with (updlock, holdlock, rowlock, nowait)";
+					return tableName + " with (updlock,holdlock,rowlock,nowait)";
 				default:
 					return tableName;
 			}
@@ -327,11 +328,11 @@ public class SQLServerDialect extends AbstractTransactSQLDialect {
 				case UPGRADE_NOWAIT:
 				case PESSIMISTIC_WRITE:
 				case WRITE:
-					return tableName + " with (updlock, rowlock)";
+					return tableName + " with (updlock,rowlock)";
 				case PESSIMISTIC_READ:
-					return tableName + " with (holdlock, rowlock)";
+					return tableName + " with (holdlock,rowlock)";
 				case UPGRADE_SKIPLOCKED:
-					return tableName + " with (updlock, rowlock, readpast)";
+					return tableName + " with (updlock,rowlock,readpast)";
 				default:
 					return tableName;
 			}
@@ -501,7 +502,7 @@ public class SQLServerDialect extends AbstractTransactSQLDialect {
 			else {
 				orderByElement.append( "1 else 0" );
 			}
-			orderByElement.append( " end, " );
+			orderByElement.append( " end," );
 		}
 
 		// Nulls precedence has already been handled so passing NONE value.
@@ -593,12 +594,12 @@ public class SQLServerDialect extends AbstractTransactSQLDialect {
 				//Java Durations are usually the only thing
 				//we find expressed in nanosecond precision,
 				//and they can easily be very large
-				return "dateadd(nanosecond, ?2%1000000000, dateadd(second, ?2/1000000000, ?3))";
+				return "dateadd(nanosecond,?2%1000000000,dateadd(second,?2/1000000000,?3))";
 			case NATIVE:
 				//microsecond is the "native" precision
-				return "dateadd(microsecond, ?2%1000000, dateadd(second, ?2/1000000, ?3))";
+				return "dateadd(microsecond,?2%1000000,dateadd(second,?2/1000000,?3))";
 			default:
-				return "dateadd(?1, ?2, ?3)";
+				return "dateadd(?1,?2,?3)";
 		}
 	}
 
@@ -607,14 +608,14 @@ public class SQLServerDialect extends AbstractTransactSQLDialect {
 		switch (unit) {
 			case NATIVE:
 				//use microsecond as the "native" precision
-				return "datediff_big(microsecond, ?2, ?3)";
+				return "datediff_big(microsecond,?2,?3)";
 			default:
 				//datediff() returns an int, and can easily
 				//overflow when dealing with "physical"
 				//durations, so use datediff_big()
 				return unit.normalized() == NANOSECOND
-						? "datediff_big(?1, ?2, ?3)"
+						? "datediff_big(?1,?2,?3)"
-						: "datediff(?1, ?2, ?3)";
+						: "datediff(?1,?2,?3)";
 		}
 	}
 

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

@@ -66,7 +66,7 @@ public class SQLServerSqlAstTranslator<T extends JdbcOperation> extends Abstract
 			if ( rendersTableReferenceAlias( currentClause ) ) {
 				final String identificationVariable = tableReference.getIdentificationVariable();
 				if ( identificationVariable != null ) {
-					appendSql( getDialect().getTableAliasSeparator() );
+					appendSql( ' ' );
 					appendSql( identificationVariable );
 				}
 			}
@@ -82,27 +82,27 @@ public class SQLServerSqlAstTranslator<T extends JdbcOperation> extends Abstract
 	private void renderLockHint(LockMode lockMode) {
 		if ( getDialect().getVersion() >= 9 ) {
 			final int effectiveLockTimeout = getEffectiveLockTimeout( lockMode );
-			final String writeLockStr = effectiveLockTimeout == LockOptions.SKIP_LOCKED ? "updlock" : "updlock, holdlock";
+			final String writeLockStr = effectiveLockTimeout == LockOptions.SKIP_LOCKED ? "updlock" : "updlock,holdlock";
 			final String readLockStr = effectiveLockTimeout == LockOptions.SKIP_LOCKED ? "updlock" : "holdlock";
 
-			final String noWaitStr = effectiveLockTimeout == LockOptions.NO_WAIT ? ", nowait" : "";
+			final String noWaitStr = effectiveLockTimeout == LockOptions.NO_WAIT ? ",nowait" : "";
-			final String skipLockStr = effectiveLockTimeout == LockOptions.SKIP_LOCKED ? ", readpast" : "";
+			final String skipLockStr = effectiveLockTimeout == LockOptions.SKIP_LOCKED ? ",readpast" : "";
 
 			switch ( lockMode ) {
 				//noinspection deprecation
 				case UPGRADE:
 				case PESSIMISTIC_WRITE:
 				case WRITE:
-					appendSql( " with (" + writeLockStr + ", rowlock" + noWaitStr + skipLockStr + ")" );
+					appendSql( " with (" + writeLockStr + ",rowlock" + noWaitStr + skipLockStr + ")" );
 					break;
 				case PESSIMISTIC_READ:
-					appendSql( " with (" + readLockStr + ", rowlock" + noWaitStr + skipLockStr + ")" );
+					appendSql( " with (" + readLockStr + ",rowlock" + noWaitStr + skipLockStr + ")" );
 					break;
 				case UPGRADE_SKIPLOCKED:
-					appendSql( " with (updlock, rowlock, readpast" + noWaitStr + ")" );
+					appendSql( " with (updlock,rowlock,readpast" + noWaitStr + ")" );
 					break;
 				case UPGRADE_NOWAIT:
-					appendSql( " with (updlock, holdlock, rowlock, nowait)" );
+					appendSql( " with (updlock,holdlock,rowlock,nowait)" );
 					break;
 			}
 		}
@@ -113,13 +113,13 @@ public class SQLServerSqlAstTranslator<T extends JdbcOperation> extends Abstract
 				case UPGRADE_NOWAIT:
 				case PESSIMISTIC_WRITE:
 				case WRITE:
-					appendSql( " with (updlock, rowlock)" );
+					appendSql( " with (updlock,rowlock)" );
 					break;
 				case PESSIMISTIC_READ:
-					appendSql(" with (holdlock, rowlock)" );
+					appendSql(" with (holdlock,rowlock)" );
 					break;
 				case UPGRADE_SKIPLOCKED:
-					appendSql( " with (updlock, rowlock, readpast)" );
+					appendSql( " with (updlock,rowlock,readpast)" );
 					break;
 			}
 		}

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

@@ -445,7 +445,7 @@ public class SpannerDialect extends Dialect {
 				case MONTH:
 					throw new SemanticException("illegal unit for timestamp_add(): " + unit);
 				default:
-					return "timestamp_add(?3, interval ?2 ?1)";
+					return "timestamp_add(?3,interval ?2 ?1)";
 			}
 		}
 		else {
@@ -457,7 +457,7 @@ public class SpannerDialect extends Dialect {
 				case NATIVE:
 					throw new SemanticException("illegal unit for date_add(): " + unit);
 				default:
-					return "date_add(?3, interval ?2 ?1)";
+					return "date_add(?3,interval ?2 ?1)";
 			}
 		}
 	}
@@ -471,7 +471,7 @@ public class SpannerDialect extends Dialect {
 				case MONTH:
 					throw new SemanticException("illegal unit for timestamp_diff(): " + unit);
 				default:
-					return "timestamp_diff(?3, ?2, ?1)";
+					return "timestamp_diff(?3,?2,?1)";
 			}
 		}
 		else {
@@ -483,7 +483,7 @@ public class SpannerDialect extends Dialect {
 				case NATIVE:
 					throw new SemanticException("illegal unit for date_diff(): " + unit);
 				default:
-					return "date_diff(?3, ?2, ?1)";
+					return "date_diff(?3,?2,?1)";
 			}
 		}
 	}

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

@@ -219,13 +219,13 @@ public class SybaseASEDialect extends SybaseDialect {
 				// If the driver or database do not support bigdatetime and bigtime types,
 				// we try to operate on milliseconds instead
 				if ( getVersion() < 1550 || jtdsDriver ) {
-					return "dateadd(millisecond, ?2/1000000, ?3)";
+					return "dateadd(millisecond,?2/1000000,?3)";
 				}
 				else {
-					return "dateadd(mcs, ?2/1000, ?3)";
+					return "dateadd(mcs,?2/1000,?3)";
 				}
 			default:
-				return "dateadd(?1, ?2, ?3)";
+				return "dateadd(?1,?2,?3)";
 		}
 	}
 
@@ -235,9 +235,9 @@ public class SybaseASEDialect extends SybaseDialect {
 		switch ( unit ) {
 			case NANOSECOND:
 			case NATIVE:
-				return "(datediff(mcs, ?2, ?3)*1000)";
+				return "(datediff(mcs,?2,?3)*1000)";
 			default:
-				return "datediff(?1, ?2, ?3)";
+				return "datediff(?1,?2,?3)";
 		}
 	}
 

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

@@ -7,16 +7,20 @@
 package org.hibernate.dialect;
 
 import java.util.List;
+import java.util.function.Consumer;
 
 import org.hibernate.LockMode;
 import org.hibernate.engine.spi.SessionFactoryImplementor;
 import org.hibernate.query.ComparisonOperator;
 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.MutationStatement;
 import org.hibernate.sql.ast.tree.Statement;
 import org.hibernate.sql.ast.tree.cte.CteStatement;
+import org.hibernate.sql.ast.tree.expression.CaseSearchedExpression;
+import org.hibernate.sql.ast.tree.expression.CaseSimpleExpression;
 import org.hibernate.sql.ast.tree.expression.ColumnReference;
 import org.hibernate.sql.ast.tree.expression.Expression;
 import org.hibernate.sql.ast.tree.expression.JdbcParameter;
@@ -44,6 +48,58 @@ public class SybaseASESqlAstTranslator<T extends JdbcOperation> extends Abstract
 		super( sessionFactory, statement );
 	}
 
+	// Sybase ASE does not allow CASE expressions where all result arms contain plain parameters.
+	// At least one result arm must provide some type context for inference,
+	// so we cast the first result arm if we encounter this condition
+
+	@Override
+	protected void visitAnsiCaseSearchedExpression(
+			CaseSearchedExpression caseSearchedExpression,
+			Consumer<Expression> resultRenderer) {
+		if ( getParameterRenderingMode() == SqlAstNodeRenderingMode.DEFAULT && areAllResultsParameters( caseSearchedExpression ) ) {
+			final List<CaseSearchedExpression.WhenFragment> whenFragments = caseSearchedExpression.getWhenFragments();
+			final Expression firstResult = whenFragments.get( 0 ).getResult();
+			super.visitAnsiCaseSearchedExpression(
+					caseSearchedExpression,
+					e -> {
+						if ( e == firstResult ) {
+							renderCasted( e );
+						}
+						else {
+							resultRenderer.accept( e );
+						}
+					}
+			);
+		}
+		else {
+			super.visitAnsiCaseSearchedExpression( caseSearchedExpression, resultRenderer );
+		}
+	}
+
+	@Override
+	protected void visitAnsiCaseSimpleExpression(
+			CaseSimpleExpression caseSimpleExpression,
+			Consumer<Expression> resultRenderer) {
+		if ( getParameterRenderingMode() == SqlAstNodeRenderingMode.DEFAULT && areAllResultsParameters( caseSimpleExpression ) ) {
+			final List<CaseSimpleExpression.WhenFragment> whenFragments = caseSimpleExpression.getWhenFragments();
+			final Expression firstResult = whenFragments.get( 0 ).getResult();
+			super.visitAnsiCaseSimpleExpression(
+					caseSimpleExpression,
+					e -> {
+						if ( e == firstResult ) {
+							renderCasted( e );
+						}
+						else {
+							resultRenderer.accept( e );
+						}
+					}
+			);
+		}
+		else {
+			super.visitAnsiCaseSimpleExpression( caseSimpleExpression, resultRenderer );
+		}
+	}
+
 	@Override
 	protected boolean renderTableReference(TableReference tableReference, LockMode lockMode) {
 		super.renderTableReference( tableReference, lockMode );
@@ -168,14 +224,13 @@ public class SybaseASESqlAstTranslator<T extends JdbcOperation> extends Abstract
 			boolean rhsNotNullPredicate =
 					lhs instanceof NullnessLiteral
 					|| lhs instanceof Literal
-					|| lhs instanceof JdbcParameter;
+					|| isParameter( lhs );
 			boolean lhsNotNullPredicate =
 					rhs instanceof NullnessLiteral
 					|| rhs instanceof Literal
-					|| rhs instanceof JdbcParameter;
+					|| isParameter( rhs );
 			if ( rhsNotNullPredicate || lhsNotNullPredicate ) {
 				lhs.accept( this );
-				appendSql( " " );
 				switch ( operator ) {
 					case DISTINCT_FROM:
 						appendSql( "<>" );
@@ -194,7 +249,6 @@ public class SybaseASESqlAstTranslator<T extends JdbcOperation> extends Abstract
 						appendSql( operator.sqlText() );
 						break;
 				}
-				appendSql( " " );
 				rhs.accept( this );
 				if ( lhsNotNullPredicate ) {
 					appendSql( " and " );
@@ -308,7 +362,7 @@ public class SybaseASESqlAstTranslator<T extends JdbcOperation> extends Abstract
 
 	@Override
 	protected String getFromDual() {
-		return " from (select 1) as dual(c1)";
+		return " from (select 1) dual(c1)";
 	}
 
 	private boolean supportsTopClause() {

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

@@ -215,6 +215,7 @@ public class SybaseDialect extends AbstractTransactSQLDialect {
 
 		CommonFunctionFactory.replace_strReplace( queryEngine );
 		CommonFunctionFactory.everyAny_sumCaseCase( queryEngine );
+		CommonFunctionFactory.bitLength_pattern( queryEngine, "datalength(?1) * 8" );
 	}
 
 	@Override
@@ -238,11 +239,11 @@ public class SybaseDialect extends AbstractTransactSQLDialect {
 		if ( to == CastType.STRING ) {
 			switch ( from ) {
 				case DATE:
-					return "str_replace(convert(varchar, ?1, 102), '.', '-')";
+					return "str_replace(convert(varchar,?1,102),'.','-')";
 				case TIME:
-					return "convert(varchar, ?1, 108)";
+					return "convert(varchar,?1,108)";
 				case TIMESTAMP:
-					return "str_replace(convert(varchar, ?1, 23), 'T', ' ')";
+					return "str_replace(convert(varchar,?1,23),'T',' ')";
 			}
 		}
 		return super.castPattern( from, to );
@@ -259,7 +260,7 @@ public class SybaseDialect extends AbstractTransactSQLDialect {
 	@Override
 	public String extractPattern(TemporalUnit unit) {
 		//TODO!!
-		return "datepart(?1, ?2)";
+		return "datepart(?1,?2)";
 	}
 
 	@Override
@@ -270,13 +271,13 @@ public class SybaseDialect extends AbstractTransactSQLDialect {
 	@Override
 	public String timestampaddPattern(TemporalUnit unit, TemporalType temporalType) {
 		//TODO!!
-		return "dateadd(?1, ?2, ?3)";
+		return "dateadd(?1,?2,?3)";
 	}
 
 	@Override
 	public String timestampdiffPattern(TemporalUnit unit, TemporalType fromTemporalType, TemporalType toTemporalType) {
 		//TODO!!
-		return "datediff(?1, ?2, ?3)";
+		return "datediff(?1,?2,?3)";
 	}
 
 	@Override

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

@@ -7,14 +7,18 @@
 package org.hibernate.dialect;
 
 import java.util.List;
+import java.util.function.Consumer;
 
 import org.hibernate.LockMode;
 import org.hibernate.engine.spi.SessionFactoryImplementor;
 import org.hibernate.query.ComparisonOperator;
+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.Statement;
 import org.hibernate.sql.ast.tree.cte.CteStatement;
+import org.hibernate.sql.ast.tree.expression.CaseSearchedExpression;
+import org.hibernate.sql.ast.tree.expression.CaseSimpleExpression;
 import org.hibernate.sql.ast.tree.expression.Expression;
 import org.hibernate.sql.ast.tree.expression.Literal;
 import org.hibernate.sql.ast.tree.expression.SqlTuple;
@@ -35,6 +39,58 @@ public class SybaseSqlAstTranslator<T extends JdbcOperation> extends AbstractSql
 		super( sessionFactory, statement );
 	}
 
+	// Sybase does not allow CASE expressions where all result arms contain plain parameters.
+	// At least one result arm must provide some type context for inference,
+	// so we cast the first result arm if we encounter this condition
+
+	@Override
+	protected void visitAnsiCaseSearchedExpression(
+			CaseSearchedExpression caseSearchedExpression,
+			Consumer<Expression> resultRenderer) {
+		if ( getParameterRenderingMode() == SqlAstNodeRenderingMode.DEFAULT && areAllResultsParameters( caseSearchedExpression ) ) {
+			final List<CaseSearchedExpression.WhenFragment> whenFragments = caseSearchedExpression.getWhenFragments();
+			final Expression firstResult = whenFragments.get( 0 ).getResult();
+			super.visitAnsiCaseSearchedExpression(
+					caseSearchedExpression,
+					e -> {
+						if ( e == firstResult ) {
+							renderCasted( e );
+						}
+						else {
+							resultRenderer.accept( e );
+						}
+					}
+			);
+		}
+		else {
+			super.visitAnsiCaseSearchedExpression( caseSearchedExpression, resultRenderer );
+		}
+	}
+
+	@Override
+	protected void visitAnsiCaseSimpleExpression(
+			CaseSimpleExpression caseSimpleExpression,
+			Consumer<Expression> resultRenderer) {
+		if ( getParameterRenderingMode() == SqlAstNodeRenderingMode.DEFAULT && areAllResultsParameters( caseSimpleExpression ) ) {
+			final List<CaseSimpleExpression.WhenFragment> whenFragments = caseSimpleExpression.getWhenFragments();
+			final Expression firstResult = whenFragments.get( 0 ).getResult();
+			super.visitAnsiCaseSimpleExpression(
+					caseSimpleExpression,
+					e -> {
+						if ( e == firstResult ) {
+							renderCasted( e );
+						}
+						else {
+							resultRenderer.accept( e );
+						}
+					}
+			);
+		}
+		else {
+			super.visitAnsiCaseSimpleExpression( caseSimpleExpression, resultRenderer );
+		}
+	}
+
 	@Override
 	protected boolean renderTableReference(TableReference tableReference, LockMode lockMode) {
 		super.renderTableReference( tableReference, lockMode );

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

@@ -0,0 +1,39 @@
+/*
+ * Hibernate, Relational Persistence for Idiomatic Java
+ *
+ * License: GNU Lesser General Public License (LGPL), version 2.1 or later
+ * See the lgpl.txt file in the root directory or http://www.gnu.org/licenses/lgpl-2.1.html
+ */
+package org.hibernate.dialect.function;
+
+import java.util.List;
+
+import org.hibernate.query.sqm.function.AbstractSqmSelfRenderingFunctionDescriptor;
+import org.hibernate.query.sqm.produce.function.StandardArgumentsValidators;
+import org.hibernate.query.sqm.produce.function.StandardFunctionReturnTypeResolvers;
+import org.hibernate.sql.ast.SqlAstNodeRenderingMode;
+import org.hibernate.sql.ast.SqlAstTranslator;
+import org.hibernate.sql.ast.spi.SqlAppender;
+import org.hibernate.sql.ast.tree.SqlAstNode;
+import org.hibernate.type.StandardBasicTypes;
+
+public class DerbyConcatFunction extends AbstractSqmSelfRenderingFunctionDescriptor {
+	public DerbyConcatFunction() {
+		super(
+				"concat",
+				StandardArgumentsValidators.min( 1 ),
+				StandardFunctionReturnTypeResolvers.invariant( StandardBasicTypes.STRING )
+		);
+	}
+
+	@Override
+	public void render(SqlAppender sqlAppender, List<SqlAstNode> sqlAstArguments, SqlAstTranslator<?> walker) {
+		sqlAppender.appendSql( '(' );
+		walker.render( sqlAstArguments.get( 0 ), SqlAstNodeRenderingMode.NO_PLAIN_PARAMETER );
+		for ( int i = 1; i < sqlAstArguments.size(); i++ ) {
+			sqlAppender.appendSql( "||" );
+			walker.render( sqlAstArguments.get( i ), SqlAstNodeRenderingMode.NO_PLAIN_PARAMETER );
+		}
+		sqlAppender.appendSql( ')' );
+	}
+}

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

@@ -34,7 +34,7 @@ public class FieldFunction extends AbstractSqmSelfRenderingFunctionDescriptor {
 		sqlAppender.appendSql( "field(" );
 		sqlAstArguments.get( 0 ).accept( walker );
 		for ( int i = 1; i < sqlAstArguments.size(); i++ ) {
-			sqlAppender.appendSql( ", " );
+			sqlAppender.appendSql( ',' );
 
 			final SqlAstNode argument = sqlAstArguments.get( i );
 			final SqlTuple sqlTuple = SqlTupleContainer.getSqlTuple( argument );
@@ -42,7 +42,7 @@ public class FieldFunction extends AbstractSqmSelfRenderingFunctionDescriptor {
 				final List<? extends Expression> expressions = sqlTuple.getExpressions();
 				for ( int j = 0; j < expressions.size(); j++ ) {
 					if ( j != 0 ) {
-						sqlAppender.appendSql( ", " );
+						sqlAppender.appendSql( ',' );
 					}
 					expressions.get( j ).accept( walker );
 				}

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

@@ -46,12 +46,12 @@ public class QuantifiedLeastGreatestEmulation
 				sqlAppender.appendSql( " when " );
 				arguments.get( i ).accept( walker );
 				sqlAppender.appendSql( operator );
-				sqlAppender.appendSql( " all(" );
+				sqlAppender.appendSql( "all(" );
 				String separator = "";
 				for ( int j = i + 1; j < numberOfArguments; j++ ) {
 					sqlAppender.appendSql( separator );
 					arguments.get( j ).accept( walker );
-					separator = ", ";
+					separator = ",";
 				}
 				sqlAppender.appendSql( ") then " );
 				arguments.get( i ).accept( walker );

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

@@ -63,7 +63,7 @@ public class TransactSQLStrFunction extends CastStrEmulation implements Function
 		sqlAppender.appendSql( "str(" );
 		arguments.get( 0 ).accept( walker );
 		for ( int i = 1; i < arguments.size(); i++ ) {
-			sqlAppender.appendSql( ", " );
+			sqlAppender.appendSql( ',' );
 			arguments.get( i ).accept( walker );
 		}
 		sqlAppender.appendSql( ')' );

hibernate-core/src/main/java/org/hibernate/dialect/pagination/LegacyDB2LimitHandler.java

@@ -22,9 +22,9 @@ public class LegacyDB2LimitHandler extends AbstractLimitHandler {
 	public String processSql(String sql, RowSelection selection) {
 		if ( hasFirstRow( selection ) ) {
 			//nest the main query in an outer select
-			return "select * from ( select row_.*, rownumber() over(order by order of row_) as rownumber_ from ( "
+			return "select * from (select row_.*,rownumber() over(order by order of row_) as rownumber_ from ("
 					+ sql + fetchFirstRows( selection )
-					+ " ) as row_ ) as query_ where rownumber_ > "
+					+ ") as row_) as query_ where rownumber_>"
 					+ selection.getFirstRow()
 					+ " order by rownumber_";
 		}
@@ -43,9 +43,9 @@ public class LegacyDB2LimitHandler extends AbstractLimitHandler {
 	public String processSql(String sql, Limit limit) {
 		if ( hasFirstRow( limit ) ) {
 			//nest the main query in an outer select
-			return "select * from ( select row_.*, rownumber() over(order by order of row_) as rownumber_ from ( "
+			return "select * from (select row_.*,rownumber() over(order by order of row_) as rownumber_ from ("
 					+ sql + fetchFirstRows( limit )
-					+ " ) as row_ ) as query_ where rownumber_ > "
+					+ ") as row_) as query_ where rownumber_>"
 					+ limit.getFirstRow()
 					+ " order by rownumber_";
 		}

hibernate-core/src/main/java/org/hibernate/dialect/pagination/LegacyOracleLimitHandler.java

@@ -38,16 +38,16 @@ public class LegacyOracleLimitHandler extends AbstractLimitHandler {
 
 		final StringBuilder pagingSelect = new StringBuilder( sql.length() + 100 );
 		if ( hasOffset ) {
-			pagingSelect.append( "select * from (select row_.*, rownum rownum_ from (" ).append( sql );
+			pagingSelect.append( "select * from (select row_.*,rownum rownum_ from (" ).append( sql );
 			if ( version < 900 ) {
-				pagingSelect.append( ") row_) where rownum_ <= ? and rownum_ > ?" );
+				pagingSelect.append( ") row_) where rownum_<=? and rownum_>?" );
 			}
 			else {
-				pagingSelect.append( ") row_ where rownum <= ?) where rownum_ > ?" );
+				pagingSelect.append( ") row_ where rownum<=?) where rownum_>?" );
 			}
 		}
 		else {
-			pagingSelect.append( "select * from (" ).append( sql ).append( ") where rownum <= ?" );
+			pagingSelect.append( "select * from (" ).append( sql ).append( ") where rownum<=?" );
 		}
 
 		if ( forUpdateClause != null ) {
@@ -73,16 +73,16 @@ public class LegacyOracleLimitHandler extends AbstractLimitHandler {
 
 		final StringBuilder pagingSelect = new StringBuilder( sql.length() + 100 );
 		if ( hasOffset ) {
-			pagingSelect.append( "select * from (select row_.*, rownum rownum_ from (" ).append( sql );
+			pagingSelect.append( "select * from (select row_.*,rownum rownum_ from (" ).append( sql );
 			if ( version < 900 ) {
-				pagingSelect.append( ") row_) where rownum_ <= ? and rownum_ > ?" );
+				pagingSelect.append( ") row_) where rownum_<=? and rownum_>?" );
 			}
 			else {
-				pagingSelect.append( ") row_ where rownum <= ?) where rownum_ > ?" );
+				pagingSelect.append( ") row_ where rownum<=?) where rownum_>?" );
 			}
 		}
 		else {
-			pagingSelect.append( "select * from (" ).append( sql ).append( ") where rownum <= ?" );
+			pagingSelect.append( "select * from (" ).append( sql ).append( ") where rownum<=?" );
 		}
 
 		if ( forUpdateClause != null ) {

hibernate-core/src/main/java/org/hibernate/dialect/pagination/LimitLimitHandler.java

@@ -25,7 +25,7 @@ public class LimitLimitHandler extends AbstractSimpleLimitHandler {
 
 	@Override
 	protected String limitClause(boolean hasFirstRow) {
-		return hasFirstRow ? " limit ?, ?" : " limit ?";
+		return hasFirstRow ? " limit ?,?" : " limit ?";
 	}
 
 	private static final Pattern FOR_UPDATE_PATTERN =

hibernate-core/src/main/java/org/hibernate/dialect/pagination/Oracle12LimitHandler.java

@@ -146,15 +146,15 @@ public class Oracle12LimitHandler extends AbstractLimitHandler {
 
 		if ( hasFirstRow ) {
 			pagingSelect = new StringBuilder( sql.length() + forUpdateClauseLength + 98 );
-			pagingSelect.append( "select * from ( select row_.*, rownum rownum_ from ( " );
+			pagingSelect.append( "select * from (select row_.*,rownum rownum_ from (" );
 			pagingSelect.append( sql );
-			pagingSelect.append( " ) row_ where rownum <= ?) where rownum_ > ?" );
+			pagingSelect.append( ") row_ where rownum<=?) where rownum_>?" );
 		}
 		else {
 			pagingSelect = new StringBuilder( sql.length() + forUpdateClauseLength + 37 );
-			pagingSelect.append( "select * from ( " );
+			pagingSelect.append( "select * from (" );
 			pagingSelect.append( sql );
-			pagingSelect.append( " ) where rownum <= ?" );
+			pagingSelect.append( ") where rownum<=?" );
 		}
 
 		if ( isForUpdate ) {

hibernate-core/src/main/java/org/hibernate/dialect/pagination/SQLServer2005LimitHandler.java

@@ -108,9 +108,9 @@ public class SQLServer2005LimitHandler extends AbstractLimitHandler {
 
 			String aliases = selectAliases( sql, afterSelectOffset, fromOffset, result ); //warning: changes result by side-effect
 			result.insert( selectOffset, ( hasCommonTables ? "," : "with" )
-					+ " query_ as (select row_.*, row_number() over (order by current_timestamp) as rownumber_ from (" )
+					+ " query_ as (select row_.*,row_number() over (order by current_timestamp) as rownumber_ from (" )
 				.append( ") row_) select " ).append( aliases )
-				.append( " from query_ where rownumber_ >= ? and rownumber_ < ?" );
+				.append( " from query_ where rownumber_>=? and rownumber_<?" );
 		}
 
 		return result.toString();
@@ -186,9 +186,9 @@ public class SQLServer2005LimitHandler extends AbstractLimitHandler {
 
 			String aliases = selectAliases( sql, afterSelectOffset, fromOffset, result ); //warning: changes result by side-effect
 			result.insert( selectOffset, ( hasCommonTables ? "," : "with" )
-					+ " query_ as (select row_.*, row_number() over (order by current_timestamp) as rownumber_ from (" )
+					+ " query_ as (select row_.*,row_number() over (order by current_timestamp) as rownumber_ from (" )
 					.append( ") row_) select " ).append( aliases )
-					.append( " from query_ where rownumber_ >= ? and rownumber_ < ?" );
+					.append( " from query_ where rownumber_>=? and rownumber_<?" );
 		}
 
 		return result.toString();
@@ -272,7 +272,7 @@ public class SQLServer2005LimitHandler extends AbstractLimitHandler {
 		}
 		while ( offset < fromOffset );
 
-		return String.join( ", ", aliases );
+		return String.join( ",", aliases );
 	}
 
 	private int getAliasIndex(String sql) {

hibernate-core/src/main/java/org/hibernate/dialect/sequence/DerbySequenceSupport.java

@@ -19,6 +19,6 @@ public final class DerbySequenceSupport extends DB2SequenceSupport {
 
 	@Override
 	public String getSelectSequencePreviousValString(String sequenceName) throws MappingException {
-		return "SYSCS_UTIL.SYSCS_PEEK_AT_SEQUENCE('HIBERNATE_ORM_TEST', '" + sequenceName.toUpperCase() + "')";
+		return "SYSCS_UTIL.SYSCS_PEEK_AT_SEQUENCE('HIBERNATE_ORM_TEST','" + sequenceName.toUpperCase() + "')";
 	}
 }

hibernate-core/src/main/java/org/hibernate/dialect/sequence/SQLServerSequenceSupport.java

@@ -19,6 +19,6 @@ public final class SQLServerSequenceSupport extends ANSISequenceSupport {
 
 	@Override
 	public String getSequencePreviousValString(String sequenceName) throws MappingException {
-		return "select convert(varchar(200), current_value) from sys.sequences where name = '" + sequenceName + "'";
+		return "select convert(varchar(200),current_value) from sys.sequences where name='" + sequenceName + "'";
 	}
 }

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

@@ -27,6 +27,19 @@ public interface CollectionPart extends ModelPart, Fetchable {
 			return name;
 		}
 
+		public static Nature fromNameExact(String name) {
+			switch ( name ) {
+				case "{element}":
+					return ELEMENT;
+				case "{index}":
+					return INDEX;
+				case "{collection-id}":
+					return ID;
+			}
+
+			return null;
+		}
+
 		public static Nature fromName(String name) {
 			// NOTE : the `$x$` form comes form order-by handling
 			//		todo (6.0) : ^^ convert these to use the `{x}` form instead?

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

@@ -52,10 +52,28 @@ public interface ForeignKeyDescriptor extends VirtualModelPart {
 
 	ModelPart getTargetPart();
 
+	default ModelPart getPart(Nature nature) {
+		if ( nature == Nature.KEY ) {
+			return getKeyPart();
+		}
+		else {
+			return getTargetPart();
+		}
+	}
+
 	Side getKeySide();
 
 	Side getTargetSide();
 
+	default Side getSide(Nature nature) {
+		if ( nature == Nature.KEY ) {
+			return getKeySide();
+		}
+		else {
+			return getTargetSide();
+		}
+	}
+
 	/**
 	 * Create a DomainResult for the referring-side of the fk
 	 */

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

@@ -241,7 +241,7 @@ public class ToOneAttributeMapping
 		}
 
 		this.navigableRole = navigableRole;
-		final CollectionPart.Nature nature = CollectionPart.Nature.fromName(
+		final CollectionPart.Nature nature = CollectionPart.Nature.fromNameExact(
 				getNavigableRole().getParent().getLocalName()
 		);
 		if ( nature == null ) {

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

@@ -6,6 +6,7 @@
  */
 package org.hibernate.metamodel.model.domain;
 
+import java.io.ObjectStreamException;
 import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.Collections;
@@ -649,6 +650,28 @@ public abstract class AbstractManagedType<J>
 		return DomainModelHelper.resolveSubType( this, subType, jpaMetamodel() );
 	}
 
+	// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+	// Serialization
+
+	protected Object writeReplace() throws ObjectStreamException {
+		return new SerialForm( jpaMetamodel(), getJavaType() );
+	}
+
+	private static class SerialForm implements Serializable {
+		private final JpaMetamodel jpaMetamodel;
+		private final Class<?> typeClass;
+
+		public SerialForm(JpaMetamodel jpaMetamodel, Class<?> typeClass) {
+			this.jpaMetamodel = jpaMetamodel;
+			this.typeClass = typeClass;
+		}
+
+		private Object readResolve() {
+			return jpaMetamodel.managedType( typeClass );
+		}
+
+	}
+
 
 	// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 	// Creation

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

@@ -17,7 +17,7 @@ import org.hibernate.query.sqm.SqmPathSource;
  * @author Steve Ebersole
  */
 public interface MapPersistentAttribute<D,K,V> extends MapAttribute<D, K, V>, PluralPersistentAttribute<D,Map<K,V>,V> {
-	SqmPathSource getKeyPathSource();
+	SqmPathSource<K> getKeyPathSource();
 
 	@Override
 	SimpleDomainType<K> getKeyType();

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

@@ -9,11 +9,13 @@ package org.hibernate.metamodel.model.domain.internal;
 import java.io.IOException;
 import java.io.ObjectInputStream;
 import java.io.ObjectOutputStream;
+import java.io.ObjectStreamException;
 import java.io.Serializable;
 import java.lang.reflect.Member;
 import java.lang.reflect.Method;
 import javax.persistence.metamodel.Attribute;
 
+import org.hibernate.engine.spi.SessionFactoryImplementor;
 import org.hibernate.internal.util.ReflectHelper;
 import org.hibernate.metamodel.AttributeClassification;
 import org.hibernate.metamodel.internal.MetadataContext;
@@ -106,49 +108,25 @@ public abstract class AbstractAttribute<D,J,B> implements PersistentAttribute<D,
 		return declaringType.getTypeName() + '#' + name + '(' + attributeClassification + ')';
 	}
 
-	/**
+	// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-	 * Used by JDK serialization...
+	// Serialization
-	 *
-	 * @param ois The input stream from which we are being read...
-	 * @throws java.io.IOException Indicates a general IO stream exception
-	 * @throws ClassNotFoundException Indicates a class resolution issue
-	 */
-	@SuppressWarnings("unchecked")
-	protected void readObject(ObjectInputStream ois) throws IOException, ClassNotFoundException {
-		ois.defaultReadObject();
-		final String memberDeclaringClassName = ( String ) ois.readObject();
-		final String memberName = ( String ) ois.readObject();
-		final String memberType = ( String ) ois.readObject();
 
-		final Class memberDeclaringClass = Class.forName(
+	protected Object writeReplace() throws ObjectStreamException {
-				memberDeclaringClassName,
+		return new SerialForm( declaringType, name );
-				false,
-				declaringType.getJavaType().getClassLoader()
-		);
-		try {
-			this.member = "method".equals( memberType )
-					? memberDeclaringClass.getMethod( memberName, ReflectHelper.NO_PARAM_SIGNATURE )
-					: memberDeclaringClass.getField( memberName );
-		}
-		catch ( Exception e ) {
-			throw new IllegalStateException(
-					"Unable to locate member [" + memberDeclaringClassName + "#"
-							+ memberName + "]"
-			);
-		}
 	}
 
-	/**
+	private static class SerialForm implements Serializable {
-	 * Used by JDK serialization...
+		private final ManagedDomainType<?> declaringType;
-	 *
+		private final String name;
-	 * @param oos The output stream to which we are being written...
+
-	 * @throws IOException Indicates a general IO stream exception
+		public SerialForm(ManagedDomainType<?> declaringType, String name) {
-	 */
+			this.declaringType = declaringType;
-	protected void writeObject(ObjectOutputStream oos) throws IOException {
+			this.name = name;
-		oos.defaultWriteObject();
+		}
-		oos.writeObject( getJavaMember().getDeclaringClass().getName() );
+
-		oos.writeObject( getJavaMember().getName() );
+		private Object readResolve() {
-		// should only ever be a field or the getter-method...
+			return declaringType.findAttribute( name );
-		oos.writeObject( Method.class.isInstance( getJavaMember() ) ? "method" : "field" );
+		}
+
 	}
 }

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

@@ -76,6 +76,9 @@ public abstract class AbstractPluralAttribute<D, C, E>
 
 	@Override
 	public SqmPathSource<?> findSubPathSource(String name) {
+		if ( CollectionPart.Nature.ELEMENT.getName().equals( name ) ) {
+			return elementPathSource;
+		}
 		return elementPathSource.findSubPathSource( name );
 	}
 

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

@@ -10,7 +10,6 @@ import org.hibernate.metamodel.model.domain.AllowableFunctionReturnType;
 import org.hibernate.metamodel.model.domain.AllowableParameterType;
 import org.hibernate.metamodel.model.domain.BasicDomainType;
 import org.hibernate.query.NavigablePath;
-import org.hibernate.query.sqm.IllegalPathUsageException;
 import org.hibernate.query.sqm.SqmPathSource;
 import org.hibernate.query.sqm.tree.domain.SqmBasicValuedSimplePath;
 import org.hibernate.query.sqm.tree.domain.SqmPath;
@@ -37,7 +36,7 @@ public class BasicSqmPathSource<J>
 
 	@Override
 	public SqmPathSource<?> findSubPathSource(String name) {
-		throw new IllegalPathUsageException( "Basic paths cannot be dereferenced" );
+		throw new IllegalStateException( "Basic paths cannot be dereferenced" );
 	}
 
 	@Override

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

@@ -9,11 +9,12 @@ package org.hibernate.metamodel.model.domain.internal;
 import org.hibernate.metamodel.mapping.EntityDiscriminatorMapping;
 import org.hibernate.metamodel.mapping.EntityMappingType;
 import org.hibernate.metamodel.mapping.EntityValuedModelPart;
+import org.hibernate.metamodel.mapping.ModelPartContainer;
+import org.hibernate.metamodel.mapping.PluralAttributeMapping;
 import org.hibernate.metamodel.model.domain.EntityDomainType;
 import org.hibernate.query.PathException;
 import org.hibernate.query.hql.spi.SemanticPathPart;
 import org.hibernate.query.hql.spi.SqmCreationState;
-import org.hibernate.query.sqm.IllegalPathUsageException;
 import org.hibernate.query.sqm.NodeBuilder;
 import org.hibernate.query.sqm.SemanticQueryWalker;
 import org.hibernate.query.sqm.SqmPathSource;
@@ -65,7 +66,14 @@ public class DiscriminatorSqmPath extends AbstractSqmPath implements SelfInterpr
 		assert entityDescriptor.hasSubclasses();
 
 		final TableGroup tableGroup = sqlAstCreationState.getFromClauseAccess().getTableGroup( getLhs().getNavigablePath() );
-		final EntityMappingType entityMapping = ( (EntityValuedModelPart) tableGroup.getModelPart() ).getEntityMappingType();
+		final ModelPartContainer modelPart = tableGroup.getModelPart();
+		final EntityMappingType entityMapping;
+		if ( modelPart instanceof EntityValuedModelPart ) {
+			entityMapping = ( (EntityValuedModelPart) modelPart ).getEntityMappingType();
+		}
+		else {
+			entityMapping = (EntityMappingType) ( (PluralAttributeMapping) modelPart ).getElementDescriptor().getPartMappingType();
+		}
 
 		return new DiscriminatorPathInterpretation( getNavigablePath(), entityMapping, tableGroup, sqlAstCreationState );
 	}
@@ -79,7 +87,7 @@ public class DiscriminatorSqmPath extends AbstractSqmPath implements SelfInterpr
 
 	@Override
 	public SemanticPathPart resolvePathPart(String name, boolean isTerminal, SqmCreationState creationState) {
-		throw new IllegalPathUsageException( "Discriminator cannot be de-referenced" );
+		throw new IllegalStateException( "Discriminator cannot be de-referenced" );
 	}
 
 	@Override

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

@@ -10,7 +10,6 @@ import org.hibernate.metamodel.mapping.EntityDiscriminatorMapping;
 import org.hibernate.metamodel.mapping.EntityMappingType;
 import org.hibernate.metamodel.model.domain.DomainType;
 import org.hibernate.metamodel.model.domain.EntityDomainType;
-import org.hibernate.query.sqm.IllegalPathUsageException;
 import org.hibernate.query.sqm.SqmPathSource;
 import org.hibernate.query.sqm.tree.domain.SqmPath;
 
@@ -38,7 +37,7 @@ public class DiscriminatorSqmPathSource<D> extends AbstractSqmPathSource<D> {
 	}
 
 	@Override
-	public SqmPathSource<?> findSubPathSource(String name) throws IllegalPathUsageException {
+	public SqmPathSource<?> findSubPathSource(String name) {
-		throw new IllegalPathUsageException( "Entity discriminator cannot be de-referenced" );
+		throw new IllegalStateException( "Entity discriminator cannot be de-referenced" );
 	}
 }

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

@@ -6,6 +6,7 @@
  */
 package org.hibernate.metamodel.model.domain.internal;
 
+import java.io.ObjectStreamException;
 import java.io.Serializable;
 import javax.persistence.metamodel.EntityType;
 
@@ -13,6 +14,7 @@ import org.hibernate.graph.internal.SubGraphImpl;
 import org.hibernate.graph.spi.SubGraphImplementor;
 import org.hibernate.mapping.PersistentClass;
 import org.hibernate.metamodel.mapping.EntityDiscriminatorMapping;
+import org.hibernate.metamodel.mapping.EntityIdentifierMapping;
 import org.hibernate.metamodel.model.domain.AbstractIdentifiableType;
 import org.hibernate.metamodel.model.domain.DomainType;
 import org.hibernate.metamodel.model.domain.EntityDomainType;
@@ -123,7 +125,7 @@ public class EntityTypeImpl<J>
 			return attribute;
 		}
 
-		if ( "id".equalsIgnoreCase( name ) ) {
+		if ( "id".equalsIgnoreCase( name ) || EntityIdentifierMapping.ROLE_LOCAL_NAME.equals( name ) ) {
 			//noinspection unchecked
 			final SingularPersistentAttribute<J, ?> idAttribute = findIdAttribute();
 			//noinspection RedundantIfStatement
@@ -188,4 +190,26 @@ public class EntityTypeImpl<J>
 				"EntityType cannot be used to create an SqmPath - that would be an SqmFrom which are created directly"
 		);
 	}
+
+	// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+	// Serialization
+
+	protected Object writeReplace() throws ObjectStreamException {
+		return new SerialForm( jpaMetamodel(), getHibernateEntityName() );
+	}
+
+	private static class SerialForm implements Serializable {
+		private final JpaMetamodel jpaMetamodel;
+		private final String hibernateEntityName;
+
+		public SerialForm(JpaMetamodel jpaMetamodel, String hibernateEntityName) {
+			this.jpaMetamodel = jpaMetamodel;
+			this.hibernateEntityName = hibernateEntityName;
+		}
+
+		private Object readResolve() {
+			return jpaMetamodel.entity( hibernateEntityName );
+		}
+
+	}
 }

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

@@ -6,6 +6,8 @@
  */
 package org.hibernate.metamodel.model.domain.internal;
 
+import java.io.ObjectStreamException;
+import java.io.Serializable;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.HashSet;
@@ -24,10 +26,12 @@ import javax.persistence.metamodel.EmbeddableType;
 import javax.persistence.metamodel.EntityType;
 import javax.persistence.metamodel.ManagedType;
 
+import org.hibernate.SessionFactory;
 import org.hibernate.boot.registry.classloading.spi.ClassLoaderService;
 import org.hibernate.boot.registry.classloading.spi.ClassLoadingException;
 import org.hibernate.boot.spi.MetadataImplementor;
 import org.hibernate.cfg.annotations.NamedEntityGraphDefinition;
+import org.hibernate.engine.spi.SessionFactoryImplementor;
 import org.hibernate.graph.internal.RootGraphImpl;
 import org.hibernate.graph.spi.AttributeNodeImplementor;
 import org.hibernate.graph.spi.GraphImplementor;
@@ -58,7 +62,7 @@ import org.hibernate.type.spi.TypeConfiguration;
 /**
  * @author Steve Ebersole
  */
-public class JpaMetamodelImpl implements JpaMetamodel {
+public class JpaMetamodelImpl implements JpaMetamodel, Serializable {
 	private static final EntityManagerMessageLogger log = HEMLogging.messageLogger( JpaMetamodel.class );
 	private static final ImportInfo<?> INVALID_IMPORT = new ImportInfo<>( null, null );
 
@@ -655,4 +659,24 @@ public class JpaMetamodelImpl implements JpaMetamodel {
 		context.registerMappedSuperclassType( mappedSuperclass, mappedSuperclassType );
 		return mappedSuperclassType;
 	}
+
+	// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+	// Serialization
+
+	private Object writeReplace() throws ObjectStreamException {
+		return new SerialForm( typeConfiguration.getSessionFactory() );
+	}
+
+	private static class SerialForm implements Serializable {
+		private final SessionFactoryImplementor sessionFactory;
+
+		public SerialForm(SessionFactoryImplementor sessionFactory) {
+			this.sessionFactory = sessionFactory;
+		}
+
+		private Object readResolve() {
+			return sessionFactory.getJpaMetamodel();
+		}
+
+	}
 }

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

@@ -9,6 +9,7 @@ package org.hibernate.metamodel.model.domain.internal;
 import java.util.List;
 
 import org.hibernate.metamodel.internal.MetadataContext;
+import org.hibernate.metamodel.mapping.CollectionPart;
 import org.hibernate.metamodel.model.domain.ListPersistentAttribute;
 import org.hibernate.query.sqm.SqmPathSource;
 import org.hibernate.query.hql.spi.SqmCreationState;
@@ -44,6 +45,20 @@ class ListAttributeImpl<X, E> extends AbstractPluralAttribute<X, List<E>, E> imp
 		return indexPathSource;
 	}
 
+	@Override
+	public SqmPathSource<?> findSubPathSource(String name) {
+		final CollectionPart.Nature nature = CollectionPart.Nature.fromNameExact( name );
+		if ( nature != null ) {
+			switch ( nature ) {
+				case INDEX:
+					return indexPathSource;
+				case ELEMENT:
+					return getElementPathSource();
+			}
+		}
+		return getElementPathSource().findSubPathSource( name );
+	}
+
 	@Override
 	public SqmAttributeJoin createSqmJoin(
 			SqmFrom lhs,

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

@@ -55,6 +55,20 @@ class MapAttributeImpl<X, K, V> extends AbstractPluralAttribute<X, Map<K, V>, V>
 		return getKeyPathSource();
 	}
 
+	@Override
+	public SqmPathSource<?> findSubPathSource(String name) {
+		final CollectionPart.Nature nature = CollectionPart.Nature.fromNameExact( name );
+		if ( nature != null ) {
+			switch ( nature ) {
+				case INDEX:
+					return keyPathSource;
+				case ELEMENT:
+					return getElementPathSource();
+			}
+		}
+		return getElementPathSource().findSubPathSource( name );
+	}
+
 	@Override
 	public SimpleDomainType<K> getKeyType() {
 		return (SimpleDomainType<K>) keyPathSource.getSqmPathType();

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

@@ -7,7 +7,6 @@
 package org.hibernate.metamodel.model.domain.internal;
 
 import org.hibernate.metamodel.model.domain.ManagedDomainType;
-import org.hibernate.query.sqm.IllegalPathUsageException;
 import org.hibernate.query.sqm.SqmPathSource;
 import org.hibernate.query.sqm.tree.domain.NonAggregatedCompositeSimplePath;
 import org.hibernate.query.sqm.tree.domain.SqmPath;
@@ -31,7 +30,7 @@ public class NonAggregatedCompositeSqmPathSource extends AbstractSqmPathSource i
 	}
 
 	@Override
-	public SqmPathSource<?> findSubPathSource(String name) throws IllegalPathUsageException {
+	public SqmPathSource<?> findSubPathSource(String name) {
 		return (SqmPathSource<?>) getSqmPathType().findAttribute( name );
 	}
 

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

@@ -221,7 +221,7 @@ public class SingularAttributeImpl<D,J>
 	}
 
 	@Override
-	public SqmPath<J> createSqmPath(SqmPath lhs) {
+	public SqmPath<J> createSqmPath(SqmPath<?> lhs) {
 		return sqmPathSource.createSqmPath( lhs );
 	}
 

hibernate-core/src/main/java/org/hibernate/persister/entity/AbstractEntityPersister.java

@@ -1289,30 +1289,6 @@ public abstract class AbstractEntityPersister
 				tableGroup,
 				creationState
 		);
-		if ( discriminatorMapping != null ) {
-			discriminatorMapping.applySqlSelections(
-					navigablePath.append( discriminatorMapping.getPartName() ),
-					tableGroup,
-					creationState
-			);
-		}
-		if ( versionMapping != null ) {
-			versionMapping.applySqlSelections(
-					navigablePath.append( versionMapping.getPartName() ),
-					tableGroup,
-					creationState
-			);
-		}
-		for ( int i = 0; i < attributeMappings.size(); i++ ) {
-			final AttributeMapping attributeMapping = attributeMappings.get( i );
-			if ( attributeMapping instanceof SingularAttributeMapping ) {
-				attributeMapping.applySqlSelections(
-						navigablePath.append( attributeMapping.getPartName() ),
-						tableGroup,
-						creationState
-				);
-			}
-		}
 	}
 
 	@Override
@@ -1327,33 +1303,6 @@ public abstract class AbstractEntityPersister
 				creationState,
 				selectionConsumer
 		);
-		if ( discriminatorMapping != null ) {
-			discriminatorMapping.applySqlSelections(
-					navigablePath.append( discriminatorMapping.getPartName() ),
-					tableGroup,
-					creationState,
-					selectionConsumer
-			);
-		}
-		if ( versionMapping != null ) {
-			versionMapping.applySqlSelections(
-					navigablePath.append( versionMapping.getPartName() ),
-					tableGroup,
-					creationState,
-					selectionConsumer
-			);
-		}
-		for ( int i = 0; i < attributeMappings.size(); i++ ) {
-			final AttributeMapping attributeMapping = attributeMappings.get( i );
-			if ( attributeMapping instanceof SingularAttributeMapping ) {
-				attributeMapping.applySqlSelections(
-						navigablePath.append( attributeMapping.getPartName() ),
-						tableGroup,
-						creationState,
-						selectionConsumer
-				);
-			}
-		}
 	}
 
 	@Override

hibernate-core/src/main/java/org/hibernate/query/ComparisonOperator.java

@@ -87,7 +87,7 @@ public enum ComparisonOperator {
 
 		@Override
 		public String sqlText() {
-			return "is not distinct from";
+			return " is not distinct from ";
 		}
 	},
 
@@ -114,7 +114,7 @@ public enum ComparisonOperator {
 
 		@Override
 		public String sqlText() {
-			return "is distinct from";
+			return " is distinct from ";
 		}
 	},
 

hibernate-core/src/main/java/org/hibernate/query/NavigablePath.java

@@ -6,6 +6,8 @@
  */
 package org.hibernate.query;
 
+import java.io.Serializable;
+
 import org.hibernate.internal.util.StringHelper;
 
 /**
@@ -14,7 +16,7 @@ import org.hibernate.internal.util.StringHelper;
  *
  * @author Steve Ebersole
  */
-public class NavigablePath implements DotIdentifierSequence {
+public class NavigablePath implements DotIdentifierSequence, Serializable {
 	public static final String IDENTIFIER_MAPPER_PROPERTY = "_identifierMapper";
 
 	private final NavigablePath parent;

hibernate-core/src/main/java/org/hibernate/query/ParameterMetadata.java

@@ -11,6 +11,7 @@ import java.util.function.Consumer;
 import javax.persistence.Parameter;
 
 import org.hibernate.Incubating;
+import org.hibernate.metamodel.model.domain.AllowableParameterType;
 
 
 /**
@@ -57,6 +58,10 @@ public interface ParameterMetadata {
 	 */
 	QueryParameter<?> resolve(Parameter param);
 
+	default <T> AllowableParameterType<T> getInferredParameterType(QueryParameter<T> parameter) {
+		return null;
+	}
+
 	/**
 	 * Is this parameter reference registered in this collection?
 	 */

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

@@ -145,6 +145,9 @@ public interface HibernateCriteriaBuilder extends CriteriaBuilder {
 	JpaCompoundSelection<Object[]> array(Selection<?>[] selections);
 	JpaCompoundSelection<Object[]> array(List<? extends JpaSelection<?>> selections);
 
+	<Y> JpaCompoundSelection<Y> array(Class<Y> resultClass, Selection<?>[] selections);
+	<Y> JpaCompoundSelection<Y> array(Class<Y> resultClass, List<? extends JpaSelection<?>> selections);
+
 
 	// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 	// Expressions
@@ -272,6 +275,8 @@ public interface HibernateCriteriaBuilder extends CriteriaBuilder {
 	@Override
 	<T> JpaParameterExpression<T> parameter(Class<T> paramClass, String name);
 
+	<T> JpaParameterExpression<T> parameter(Class<T> paramClass, T value);
+
 	@Override
 	JpaExpression<String> concat(Expression<String> x, Expression<String> y);
 
@@ -423,13 +428,12 @@ public interface HibernateCriteriaBuilder extends CriteriaBuilder {
 	 * @apiNote This is different from the purely JPA form
 	 * {@link CriteriaBuilder#tuple} which is intended only for use as
 	 * the selection in a root query.
-	 *
+	 *@param tupleType The Java type
-	 * @param tupleType The Java type
 	 * @param expressions The individual expressions making up the tuple
 	 */
 	<R> JpaCompoundSelection<R> tuple(
 			Class<R> tupleType,
-			List<JpaExpression<?>> expressions);
+			List<? extends JpaExpression<?>> expressions);
 
 	/**
 	 * Create a tuple, as in a composite value, usable in any
@@ -459,7 +463,7 @@ public interface HibernateCriteriaBuilder extends CriteriaBuilder {
 	 */
 	<R> JpaCompoundSelection<R> tuple(
 			DomainType<R> tupleType,
-			List<JpaExpression<?>> expressions);
+			List<? extends JpaExpression<?>> expressions);
 
 
 	// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -671,7 +675,7 @@ public interface HibernateCriteriaBuilder extends CriteriaBuilder {
 	@SuppressWarnings("unchecked")
 	<T> JpaInPredicate<T> in(Expression<? extends T> expression, T... values);
 
-	<T> JpaInPredicate<T> in(Expression<? extends T> expression, List<T> values);
+	<T> JpaInPredicate<T> in(Expression<? extends T> expression, Collection<T> values);
 
 	@Override
 	JpaPredicate exists(Subquery<?> subquery);
@@ -724,7 +728,7 @@ public interface HibernateCriteriaBuilder extends CriteriaBuilder {
 	 *
 	 * @return size expression
 	 */
-	<M extends Map<?,?>> JpaExpression<Integer> mapSize(M map);
+	<M extends Map<?, ?>> JpaExpression<Integer> mapSize(M map);
 
 
 	// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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

@@ -6,7 +6,13 @@
  */
 package org.hibernate.query.criteria;
 
+import java.util.Collection;
+import java.util.Map;
+import javax.persistence.criteria.Expression;
 import javax.persistence.criteria.Path;
+import javax.persistence.metamodel.MapAttribute;
+import javax.persistence.metamodel.PluralAttribute;
+import javax.persistence.metamodel.SingularAttribute;
 
 import org.hibernate.metamodel.model.domain.EntityDomainType;
 import org.hibernate.query.NavigablePath;
@@ -46,4 +52,19 @@ public interface JpaPath<T> extends JpaExpression<T>, Path<T> {
 	default JpaPath<?> getParentPath() {
 		return getLhs();
 	}
+
+	@Override
+	<Y> JpaPath<Y> get(SingularAttribute<? super T, Y> attribute);
+
+	@Override
+	<E, C extends Collection<E>> JpaExpression<C> get(PluralAttribute<T, C, E> collection);
+
+	@Override
+	<K, V, M extends Map<K, V>> JpaExpression<M> get(MapAttribute<T, K, V> map);
+
+	@Override
+	JpaExpression<Class<? extends T>> type();
+
+	@Override
+	<Y> JpaPath<Y> get(String attributeName);
 }

hibernate-core/src/main/java/org/hibernate/query/hql/internal/QuerySplitter.java

@@ -289,6 +289,7 @@ public class QuerySplitter {
 			final SqmRoot<?> copy = new SqmRoot<>(
 					pathSource,
 					sqmRoot.getExplicitAlias(),
+					sqmRoot.isAllowJoins(),
 					sqmRoot.nodeBuilder()
 			);
 			return (SqmRoot<?>) getProcessingStateStack().getCurrent().getPathRegistry().resolvePath(
@@ -632,7 +633,7 @@ public class QuerySplitter {
 
 
 		@Override
-		public SqmPositionalParameter visitPositionalParameterExpression(SqmPositionalParameter expression) {
+		public SqmPositionalParameter visitPositionalParameterExpression(SqmPositionalParameter<?> expression) {
 			return new SqmPositionalParameter(
 					expression.getPosition(),
 					expression.allowMultiValuedBinding(),
@@ -641,7 +642,7 @@ public class QuerySplitter {
 		}
 
 		@Override
-		public SqmNamedParameter visitNamedParameterExpression(SqmNamedParameter expression) {
+		public SqmNamedParameter visitNamedParameterExpression(SqmNamedParameter<?> expression) {
 			return new SqmNamedParameter(
 					expression.getName(),
 					expression.allowMultiValuedBinding(),
@@ -650,12 +651,12 @@ public class QuerySplitter {
 		}
 
 		@Override
-		public SqmLiteralEntityType visitEntityTypeLiteralExpression(SqmLiteralEntityType expression) {
+		public SqmLiteralEntityType visitEntityTypeLiteralExpression(SqmLiteralEntityType<?> expression) {
 			return new SqmLiteralEntityType( expression.getNodeType(), expression.nodeBuilder() );
 		}
 
 		@Override
-		public SqmUnaryOperation visitUnaryOperationExpression(SqmUnaryOperation expression) {
+		public SqmUnaryOperation visitUnaryOperationExpression(SqmUnaryOperation<?> expression) {
 			return new SqmUnaryOperation(
 					expression.getOperation(),
 					(SqmExpression) expression.getOperand().accept( this )
@@ -672,7 +673,7 @@ public class QuerySplitter {
 		}
 
 		@Override
-		public SqmBinaryArithmetic visitBinaryArithmeticExpression(SqmBinaryArithmetic expression) {
+		public SqmBinaryArithmetic visitBinaryArithmeticExpression(SqmBinaryArithmetic<?> expression) {
 			return new SqmBinaryArithmetic(
 					expression.getOperator(), (SqmExpression) expression.getLeftHandOperand().accept( this ),
 					(SqmExpression) expression.getRightHandOperand().accept( this ),
@@ -682,7 +683,7 @@ public class QuerySplitter {
 		}
 
 		@Override
-		public SqmSubQuery visitSubQueryExpression(SqmSubQuery expression) {
+		public SqmSubQuery visitSubQueryExpression(SqmSubQuery<?> expression) {
 			// its not supported for a SubQuery to define a dynamic instantiation, so
 			//		any "selectable node" will only ever be an SqmExpression
 			return new SqmSubQuery(

hibernate-core/src/main/java/org/hibernate/query/hql/internal/SemanticQueryBuilder.java

@@ -43,6 +43,7 @@ import org.hibernate.grammars.hql.HqlParserBaseVisitor;
 import org.hibernate.internal.util.collections.Stack;
 import org.hibernate.internal.util.collections.StandardStack;
 import org.hibernate.metamodel.CollectionClassification;
+import org.hibernate.metamodel.mapping.CollectionPart;
 import org.hibernate.metamodel.model.domain.AllowableFunctionReturnType;
 import org.hibernate.metamodel.model.domain.BasicDomainType;
 import org.hibernate.metamodel.model.domain.DomainType;
@@ -54,6 +55,7 @@ import org.hibernate.metamodel.model.domain.SingularPersistentAttribute;
 import org.hibernate.query.BinaryArithmeticOperator;
 import org.hibernate.query.ComparisonOperator;
 import org.hibernate.query.FetchClauseType;
+import org.hibernate.query.NavigablePath;
 import org.hibernate.query.NullPrecedence;
 import org.hibernate.query.PathException;
 import org.hibernate.query.SemanticException;
@@ -403,6 +405,7 @@ public class SemanticQueryBuilder<R> extends HqlParserBaseVisitor<Object> implem
 		return new SqmRoot<>(
 				(EntityDomainType<R>) visitEntityName( entityNameContext ),
 				identificationVariable,
+				false,
 				creationContext.getNodeBuilder()
 		);
 	}
@@ -852,7 +855,7 @@ public class SemanticQueryBuilder<R> extends HqlParserBaseVisitor<Object> implem
 
 		fromClause.visitRoots(
 				sqmRoot -> selectClause.addSelection(
-						new SqmSelection<>( sqmRoot, sqmRoot.getExplicitAlias(), creationContext.getNodeBuilder() )
+						new SqmSelection<>( sqmRoot, sqmRoot.getAlias(), creationContext.getNodeBuilder() )
 				)
 		);
 		return selectClause;
@@ -952,8 +955,7 @@ public class SemanticQueryBuilder<R> extends HqlParserBaseVisitor<Object> implem
 						);
 					}
 
-					final PluralPersistentAttribute<?, ?, ?> pluralAttribute = (PluralPersistentAttribute<?, ?, ?>) sqmPath.getReferencedPathSource();
+					final SqmPath<?> elementPath = (SqmPath<?>) sqmPath.resolvePathPart( CollectionPart.Nature.ELEMENT.getName(), true, this );
-					final SqmPath<?> elementPath = pluralAttribute.getElementPathSource().createSqmPath( sqmPath );
 					processingStateStack.getCurrent().getPathRegistry().register( elementPath );
 					return elementPath;
 				}
@@ -1534,7 +1536,7 @@ public class SemanticQueryBuilder<R> extends HqlParserBaseVisitor<Object> implem
 			}
 		}
 
-		final SqmRoot<?> sqmRoot = new SqmRoot<>( entityDescriptor, alias, creationContext.getNodeBuilder() );
+		final SqmRoot<?> sqmRoot = new SqmRoot<>( entityDescriptor, alias, true, creationContext.getNodeBuilder() );
 
 		pathRegistry.register( sqmRoot );
 
@@ -1688,7 +1690,7 @@ public class SemanticQueryBuilder<R> extends HqlParserBaseVisitor<Object> implem
 			}
 			else {
 				if ( getCreationOptions().useStrictJpaCompliance() ) {
-					if ( join.getExplicitAlias() != null ){
+					if ( join.getExplicitAlias() != null ) {
 						//noinspection rawtypes
 						if ( ( (SqmAttributeJoin) join ).isFetched() ) {
 							throw new StrictJpaComplianceViolation(
@@ -2158,13 +2160,12 @@ public class SemanticQueryBuilder<R> extends HqlParserBaseVisitor<Object> implem
 
 	@Override
 	public SqmPath<?> visitEntityIdReference(HqlParser.EntityIdReferenceContext ctx) {
-		final SqmPath<?> sqmPath = consumeDomainPath( (HqlParser.PathContext) ctx.getChild( 2 ) );
+		final SqmPath<Object> sqmPath = consumeDomainPath( (HqlParser.PathContext) ctx.getChild( 2 ) );
 		final DomainType<?> sqmPathType = sqmPath.getReferencedPathSource().getSqmPathType();
 
 		if ( sqmPathType instanceof IdentifiableDomainType<?> ) {
-			//noinspection unchecked
+			final SqmPathSource<?> identifierDescriptor = ( (IdentifiableDomainType<?>) sqmPathType ).getIdentifierDescriptor();
-			final SqmPath<?> idPath = ( (IdentifiableDomainType<?>) sqmPathType ).getIdentifierDescriptor()
+			final SqmPath<?> idPath = sqmPath.get( identifierDescriptor.getPathName() );
-					.createSqmPath( sqmPath );
 
 			if ( ctx.getChildCount() != 5 ) {
 				return idPath;
@@ -2184,12 +2185,13 @@ public class SemanticQueryBuilder<R> extends HqlParserBaseVisitor<Object> implem
 
 	@Override
 	public SqmPath<?> visitEntityVersionReference(HqlParser.EntityVersionReferenceContext ctx) {
-		final SqmPath<?> sqmPath = consumeDomainPath( (HqlParser.PathContext) ctx.getChild( 2 ) );
+		final SqmPath<Object> sqmPath = consumeDomainPath( (HqlParser.PathContext) ctx.getChild( 2 ) );
 		final DomainType<?> sqmPathType = sqmPath.getReferencedPathSource().getSqmPathType();
 
 		if ( sqmPathType instanceof IdentifiableDomainType<?> ) {
-			final IdentifiableDomainType<?> identifiableType = (IdentifiableDomainType<?>) sqmPathType;
+			@SuppressWarnings("unchecked")
-			final SingularPersistentAttribute<?, ?> versionAttribute = identifiableType.findVersionAttribute();
+			final IdentifiableDomainType<Object> identifiableType = (IdentifiableDomainType<Object>) sqmPathType;
+			final SingularPersistentAttribute<Object, ?> versionAttribute = identifiableType.findVersionAttribute();
 			if ( versionAttribute == null ) {
 				throw new SemanticException(
 						"`" + sqmPath.getNavigablePath().getFullPath() + "` resolved to an identifiable-type (`" +
@@ -2197,7 +2199,7 @@ public class SemanticQueryBuilder<R> extends HqlParserBaseVisitor<Object> implem
 				);
 			}
 
-			return versionAttribute.createSqmPath( sqmPath );
+			return sqmPath.get( versionAttribute );
 		}
 
 		throw new SemanticException( "Path does not reference an identifiable-type : " + sqmPath.getNavigablePath().getFullPath() );
@@ -3614,19 +3616,20 @@ public class SemanticQueryBuilder<R> extends HqlParserBaseVisitor<Object> implem
 			selectClause.setSelection( literal );
 		}
 		else {
-			final SqmPathSource<?> pathSource;
+			final String partName;
 			switch ( collectionReferenceCtx.getSymbol().getType() ) {
 				case HqlParser.ELEMENTS:
-					pathSource = attribute.getElementPathSource();
+					partName = CollectionPart.Nature.ELEMENT.getName();
 					break;
 				case HqlParser.INDICES:
-					pathSource = attribute.getIndexPathSource();
+					partName = CollectionPart.Nature.INDEX.getName();
 					break;
 				default:
 					throw new ParsingException( "Unexpected collection reference : " + collectionReferenceCtx.getText() );
 			}
-			subQuery.applyInferableType( pathSource.getSqmPathType() );
+			final SqmPath<?> path = collectionJoin.resolvePathPart( partName, true, this );
-			selectClause.setSelection( pathSource.createSqmPath( collectionJoin ) );
+			subQuery.applyInferableType( path.getNodeType() );
+			selectClause.setSelection( path );
 		}
 		final SqmQuerySpec<?> querySpec = subQuery.getQuerySpec();
 		querySpec.setFromClause( fromClause );
@@ -3822,13 +3825,11 @@ public class SemanticQueryBuilder<R> extends HqlParserBaseVisitor<Object> implem
 
 		final SqmPathSource<?> pluralAttribute = sqmFrom.getReferencedPathSource();
 
-		if ( !( pluralAttribute instanceof PluralPersistentAttribute ) ) {
+		if ( !( pluralAttribute instanceof PluralPersistentAttribute<?, ?, ?> ) ) {
 			throw new ParsingException( "Could not resolve identification variable [" + alias + "] as plural-attribute" );
 		}
 
-		return ( (PluralPersistentAttribute<?, ?, ?>) pluralAttribute ).getIndexPathSource().createSqmPath(
+		return sqmFrom.resolvePathPart( CollectionPart.Nature.INDEX.getName(), true, this );
-				sqmFrom
-		);
 	}
 
 	@SuppressWarnings("BooleanMethodIsAlwaysInverted")
@@ -4020,6 +4021,17 @@ public class SemanticQueryBuilder<R> extends HqlParserBaseVisitor<Object> implem
 		final DotIdentifierConsumer consumer = dotIdentifierConsumerStack.pop();
 		final SqmExpression<?> indexExpression = (SqmExpression<?>) ctx.getChild( 1 ).accept( this );
 		final SqmAttributeJoin<?, ?> attributeJoin = (SqmAttributeJoin<?, ?>) consumer.getConsumedPart();
+		final NavigablePath navigablePath = attributeJoin.getNavigablePath().getParent().append(
+				attributeJoin.getNavigablePath().getLocalName(),
+				indexExpression.toHqlString()
+		);
+		// Reuse an existing indexed path join if possible
+		for ( SqmJoin<?, ?> sqmJoin : attributeJoin.getSqmJoins() ) {
+			if ( sqmJoin.getNavigablePath().getLocalName().equals( navigablePath.getLocalName() ) ) {
+				return sqmJoin;
+			}
+		}
+
 		final SqmExpression<?> index;
 		if ( attributeJoin instanceof SqmListJoin<?, ?> ) {
 			index = ( (SqmListJoin<?, ?>) attributeJoin ).index();
@@ -4032,6 +4044,7 @@ public class SemanticQueryBuilder<R> extends HqlParserBaseVisitor<Object> implem
 		}
 		attributeJoin.setJoinPredicate( creationContext.getNodeBuilder().equal( index, indexExpression ) );
 		final SqmIndexedCollectionAccessPath<?> path = new SqmIndexedCollectionAccessPath<>(
+				navigablePath,
 				attributeJoin,
 				indexExpression
 		);
@@ -4118,7 +4131,7 @@ public class SemanticQueryBuilder<R> extends HqlParserBaseVisitor<Object> implem
 		final SqmPath<?> pluralAttributePath = consumeDomainPath( (HqlParser.PathContext) ctx.getChild( 2 ) );
 		final SqmPathSource<?> referencedPathSource = pluralAttributePath.getReferencedPathSource();
 
-		if ( !(referencedPathSource instanceof PluralPersistentAttribute ) ) {
+		if ( !(referencedPathSource instanceof PluralPersistentAttribute<?, ?, ?> ) ) {
 			throw new PathException(
 					"Illegal attempt to treat non-plural path as a plural path : " + pluralAttributePath.getNavigablePath()
 			);
@@ -4130,11 +4143,13 @@ public class SemanticQueryBuilder<R> extends HqlParserBaseVisitor<Object> implem
 			if ( attribute.getCollectionClassification() != CollectionClassification.MAP ) {
 				throw new StrictJpaComplianceViolation( StrictJpaComplianceViolation.Type.VALUE_FUNCTION_ON_NON_MAP );
 			}
+			final TerminalNode firstNode = (TerminalNode) ctx.getChild( 0 );
+			if ( firstNode.getSymbol().getType() == HqlParser.ELEMENTS ) {
+				throw new StrictJpaComplianceViolation( StrictJpaComplianceViolation.Type.HQL_COLLECTION_FUNCTION );
+			}
 		}
 
-		SqmPath<?> result = attribute.getElementPathSource().createSqmPath(
+		SqmPath<?> result = (SqmPath<?>) pluralAttributePath.resolvePathPart( CollectionPart.Nature.ELEMENT.getName(), true, this );
-				pluralAttributePath
-		);
 
 		if ( ctx.getChildCount() == 5 ) {
 			result = consumeDomainPath( (HqlParser.DotIdentifierSequenceContext) ctx.getChild( 4 ).getChild( 1 ) );
@@ -4146,26 +4161,19 @@ public class SemanticQueryBuilder<R> extends HqlParserBaseVisitor<Object> implem
 
 	@Override
 	public SqmPath<?> visitCollectionIndexNavigablePath(HqlParser.CollectionIndexNavigablePathContext ctx) {
+		if ( getCreationOptions().useStrictJpaCompliance() ) {
+			throw new StrictJpaComplianceViolation( StrictJpaComplianceViolation.Type.HQL_COLLECTION_FUNCTION );
+		}
 		final SqmPath<?> pluralAttributePath = consumeDomainPath( (HqlParser.PathContext) ctx.getChild( 2 ) );
 		final SqmPathSource<?> referencedPathSource = pluralAttributePath.getReferencedPathSource();
 
-		if ( !(referencedPathSource instanceof PluralPersistentAttribute ) ) {
+		if ( !(referencedPathSource instanceof PluralPersistentAttribute<?, ?, ?> ) ) {
 			throw new PathException(
 					"Illegal attempt to treat non-plural path as a plural path : " + pluralAttributePath.getNavigablePath()
 			);
 		}
 
-		final PluralPersistentAttribute<?, ?, ?> attribute = (PluralPersistentAttribute<?, ?, ?>) referencedPathSource;
+		return (SqmPath<?>) pluralAttributePath.resolvePathPart( CollectionPart.Nature.INDEX.getName(), true, this );
-
-		if ( getCreationOptions().useStrictJpaCompliance() ) {
-			if ( attribute.getCollectionClassification() != CollectionClassification.MAP ) {
-				throw new StrictJpaComplianceViolation( StrictJpaComplianceViolation.Type.VALUE_FUNCTION_ON_NON_MAP );
-			}
-		}
-
-		return attribute.getIndexPathSource().createSqmPath(
-				pluralAttributePath
-		);
 	}
 
 	@Override
@@ -4176,16 +4184,12 @@ public class SemanticQueryBuilder<R> extends HqlParserBaseVisitor<Object> implem
 		SqmPath<?> result;
 		if ( sqmPath instanceof SqmMapJoin ) {
 			final SqmMapJoin<?, ?, ?> sqmMapJoin = (SqmMapJoin<?, ?, ?>) sqmPath;
-			result = sqmMapJoin.getReferencedPathSource().getIndexPathSource().createSqmPath( sqmMapJoin );
+			result = sqmMapJoin.key();
 		}
 		else {
 			assert sqmPath instanceof SqmPluralValuedSimplePath;
 			final SqmPluralValuedSimplePath<?> mapPath = (SqmPluralValuedSimplePath<?>) sqmPath;
-			final SqmPath<?> keyPath = mapPath.getReferencedPathSource()
+			result = mapPath.resolvePathPart( CollectionPart.Nature.INDEX.getName(), true, this );
-					.getIndexPathSource()
-					.createSqmPath( mapPath );
-			mapPath.registerReusablePath( keyPath );
-			result = keyPath;
 		}
 
 		if ( ctx.getChildCount() == 5 ) {
@@ -4195,10 +4199,11 @@ public class SemanticQueryBuilder<R> extends HqlParserBaseVisitor<Object> implem
 		return result;
 	}
 
-	private SqmPath<?> consumeDomainPath(HqlParser.PathContext parserPath) {
+	private <X> SqmPath<X> consumeDomainPath(HqlParser.PathContext parserPath) {
 		final SemanticPathPart consumedPart = (SemanticPathPart) parserPath.accept( this );
 		if ( consumedPart instanceof SqmPath ) {
-			return (SqmPath<?>) consumedPart;
+			//noinspection unchecked
+			return (SqmPath<X>) consumedPart;
 		}
 
 		throw new SemanticException( "Expecting domain-model path, but found : " + consumedPart );

hibernate-core/src/main/java/org/hibernate/query/hql/internal/SqmPathRegistryImpl.java

@@ -37,12 +37,12 @@ public class SqmPathRegistryImpl implements SqmPathRegistry {
 	private final SqmCreationProcessingState associatedProcessingState;
 	private final JpaCompliance jpaCompliance;
 
-	private final Map<NavigablePath, SqmPath> sqmPathByPath = new HashMap<>();
+	private final Map<NavigablePath, SqmPath<?>> sqmPathByPath = new HashMap<>();
-	private final Map<NavigablePath, SqmFrom> sqmFromByPath = new HashMap<>();
+	private final Map<NavigablePath, SqmFrom<?, ?>> sqmFromByPath = new HashMap<>();
 
-	private final Map<String, SqmFrom> sqmFromByAlias = new HashMap<>();
+	private final Map<String, SqmFrom<?, ?>> sqmFromByAlias = new HashMap<>();
 
-	private final List<SqmAliasedNode> simpleSelectionNodes = new ArrayList<>();
+	private final List<SqmAliasedNode<?>> simpleSelectionNodes = new ArrayList<>();
 
 	public SqmPathRegistryImpl(SqmCreationProcessingState associatedProcessingState) {
 		this.associatedProcessingState = associatedProcessingState;
@@ -50,7 +50,7 @@ public class SqmPathRegistryImpl implements SqmPathRegistry {
 	}
 
 	@Override
-	public void register(SqmPath sqmPath) {
+	public void register(SqmPath<?> sqmPath) {
 		SqmTreeCreationLogger.LOGGER.tracef( "SqmProcessingIndex#register(SqmPath) : %s", sqmPath.getNavigablePath().getFullPath() );
 
 		// Generally we:
@@ -61,8 +61,8 @@ public class SqmPathRegistryImpl implements SqmPathRegistry {
 		// Regarding part #1 (add to the path-by-path map), it is ok for a SqmFrom to replace a
 		// 		non-SqmFrom.  This should equate to, e.g., an implicit join.
 
-		if ( sqmPath instanceof SqmFrom ) {
+		if ( sqmPath instanceof SqmFrom<?, ?> ) {
-			final SqmFrom sqmFrom = (SqmFrom) sqmPath;
+			final SqmFrom<?, ?> sqmFrom = (SqmFrom<?, ?>) sqmPath;
 
 			final String alias = sqmPath.getExplicitAlias();
 			if ( alias != null ) {
@@ -70,7 +70,7 @@ public class SqmPathRegistryImpl implements SqmPathRegistry {
 						? alias.toLowerCase( Locale.getDefault() )
 						: alias;
 
-				final SqmFrom previousFrom = sqmFromByAlias.put( aliasToUse, sqmFrom );
+				final SqmFrom<?, ?> previousFrom = sqmFromByAlias.put( aliasToUse, sqmFrom );
 
 				if ( previousFrom != null ) {
 					throw new AliasCollisionException(
@@ -85,7 +85,7 @@ public class SqmPathRegistryImpl implements SqmPathRegistry {
 				}
 			}
 
-			final SqmFrom previousFromByPath = sqmFromByPath.put( sqmPath.getNavigablePath(), sqmFrom );
+			final SqmFrom<?, ?> previousFromByPath = sqmFromByPath.put( sqmPath.getNavigablePath(), sqmFrom );
 
 			if ( previousFromByPath != null ) {
 				// this should never happen
@@ -101,7 +101,7 @@ public class SqmPathRegistryImpl implements SqmPathRegistry {
 			}
 		}
 
-		final SqmPath previousPath = sqmPathByPath.put( sqmPath.getNavigablePath(), sqmPath );
+		final SqmPath<?> previousPath = sqmPathByPath.put( sqmPath.getNavigablePath(), sqmPath );
 
 		if ( previousPath instanceof SqmFrom ) {
 			// this should never happen
@@ -118,14 +118,15 @@ public class SqmPathRegistryImpl implements SqmPathRegistry {
 	}
 
 	@Override
-	public SqmPath findPath(NavigablePath path) {
+	public <X> SqmPath<X> findPath(NavigablePath path) {
-		final SqmPath found = sqmPathByPath.get( path );
+		final SqmPath<?> found = sqmPathByPath.get( path );
 		if ( found != null ) {
-			return found;
+			//noinspection unchecked
+			return (SqmPath<X>) found;
 		}
 
 		if ( associatedProcessingState.getParentProcessingState() != null ) {
-			final SqmFrom containingQueryFrom = associatedProcessingState.getParentProcessingState()
+			final SqmFrom<?, X> containingQueryFrom = associatedProcessingState.getParentProcessingState()
 					.getPathRegistry()
 					.findFromByPath( path );
 			if ( containingQueryFrom != null ) {
@@ -138,14 +139,15 @@ public class SqmPathRegistryImpl implements SqmPathRegistry {
 	}
 
 	@Override
-	public SqmFrom findFromByPath(NavigablePath navigablePath) {
+	public <X extends SqmFrom<?, ?>> X findFromByPath(NavigablePath navigablePath) {
-		final SqmFrom found = sqmFromByPath.get( navigablePath );
+		final SqmFrom<?, ?> found = sqmFromByPath.get( navigablePath );
 		if ( found != null ) {
-			return found;
+			//noinspection unchecked
+			return (X) found;
 		}
 
 		if ( associatedProcessingState.getParentProcessingState() != null ) {
-			final SqmFrom containingQueryFrom = associatedProcessingState.getParentProcessingState()
+			final X containingQueryFrom = associatedProcessingState.getParentProcessingState()
 					.getPathRegistry()
 					.findFromByPath( navigablePath );
 			if ( containingQueryFrom != null ) {
@@ -158,15 +160,16 @@ public class SqmPathRegistryImpl implements SqmPathRegistry {
 	}
 
 	@Override
-	public SqmFrom findFromByAlias(String alias) {
+	public <X extends SqmFrom<?, ?>> X findFromByAlias(String alias) {
 		final String localAlias = jpaCompliance.isJpaQueryComplianceEnabled()
 				? alias.toLowerCase( Locale.getDefault() )
 				: alias;
 
-		final SqmFrom registered = sqmFromByAlias.get( localAlias );
+		final SqmFrom<?, ?> registered = sqmFromByAlias.get( localAlias );
 
 		if ( registered != null ) {
-			return registered;
+			//noinspection unchecked
+			return (X) registered;
 		}
 
 		if ( associatedProcessingState.getParentProcessingState() != null ) {
@@ -177,14 +180,14 @@ public class SqmPathRegistryImpl implements SqmPathRegistry {
 	}
 
 	@Override
-	public SqmFrom findFromExposing(String navigableName) {
+	public <X extends SqmFrom<?, ?>> X findFromExposing(String navigableName) {
 		// todo (6.0) : atm this checks every from-element every time, the idea being to make sure there
 		//  	is only one such element obviously that scales poorly across larger from-clauses.  Another
 		//  	(configurable?) option would be to simply pick the first one as a perf optimization
 
-		SqmFrom found = null;
+		SqmFrom<?, ?> found = null;
-		for ( Map.Entry<NavigablePath, SqmFrom> entry : sqmFromByPath.entrySet() ) {
+		for ( Map.Entry<NavigablePath, SqmFrom<?, ?>> entry : sqmFromByPath.entrySet() ) {
-			final SqmFrom fromElement = entry.getValue();
+			final SqmFrom<?, ?> fromElement = entry.getValue();
 			if ( definesAttribute( fromElement.getReferencedPathSource(), navigableName ) ) {
 				if ( found != null ) {
 					throw new IllegalStateException( "Multiple from-elements expose unqualified attribute : " + navigableName );
@@ -208,24 +211,26 @@ public class SqmPathRegistryImpl implements SqmPathRegistry {
 				navigableName
 		);
 
-		return found;
+		//noinspection unchecked
+		return (X) found;
 	}
 
 	@Override
-	public SqmPath resolvePath(NavigablePath navigablePath, Function<NavigablePath, SqmPath> creator) {
+	public <X> SqmPath<X> resolvePath(NavigablePath navigablePath, Function<NavigablePath, SqmPath<X>> creator) {
 		SqmTreeCreationLogger.LOGGER.tracef( "SqmProcessingIndex#resolvePath(NavigablePath) : %s", navigablePath );
 
-		final SqmPath existing = sqmPathByPath.get( navigablePath );
+		final SqmPath<?> existing = sqmPathByPath.get( navigablePath );
 		if ( existing != null ) {
-			return existing;
+			//noinspection unchecked
+			return (SqmPath<X>) existing;
 		}
 
-		final SqmPath sqmPath = creator.apply( navigablePath );
+		final SqmPath<X> sqmPath = creator.apply( navigablePath );
 		register( sqmPath );
 		return sqmPath;
 	}
 
-	private boolean definesAttribute(SqmPathSource containerType, String name) {
+	private boolean definesAttribute(SqmPathSource<?> containerType, String name) {
 		return containerType.findSubPathSource( name ) != null;
 	}
 
@@ -282,7 +287,7 @@ public class SqmPathRegistryImpl implements SqmPathRegistry {
 		simpleSelectionNodes.add( node );
 	}
 
-	private void checkResultVariable(SqmAliasedNode selection) {
+	private void checkResultVariable(SqmAliasedNode<?> selection) {
 		final String alias = selection.getAlias();
 		if ( alias == null ) {
 			return;
@@ -300,7 +305,7 @@ public class SqmPathRegistryImpl implements SqmPathRegistry {
 			);
 		}
 
-		final SqmFrom registeredFromElement = sqmFromByAlias.get( alias );
+		final SqmFrom<?, ?> registeredFromElement = sqmFromByAlias.get( alias );
 		if ( registeredFromElement != null ) {
 			if ( !registeredFromElement.equals( selection.getSelectableNode() ) ) {
 				throw new AliasCollisionException(

hibernate-core/src/main/java/org/hibernate/query/hql/spi/SemanticPathPart.java

@@ -29,8 +29,8 @@ public interface SemanticPathPart {
 			boolean isTerminal,
 			SqmCreationState creationState);
 
-	SqmPath resolveIndexedAccess(
+	SqmPath<?> resolveIndexedAccess(
-			SqmExpression selector,
+			SqmExpression<?> selector,
 			boolean isTerminal,
 			SqmCreationState creationState);
 }

hibernate-core/src/main/java/org/hibernate/query/hql/spi/SqmPathRegistry.java

@@ -30,7 +30,7 @@ public interface SqmPathRegistry {
 	/**
 	 * Register an SqmPath
 	 */
-	void register(SqmPath sqmPath);
+	void register(SqmPath<?> sqmPath);
 
 	/**
 	 * Find a SqmFrom by its identification variable (alias).  Will search any
@@ -38,14 +38,14 @@ public interface SqmPathRegistry {
 	 *
 	 * @return matching SqmFrom or {@code null}
 	 */
-	SqmFrom findFromByAlias(String identificationVariable);
+	<X extends SqmFrom<?, ?>> X findFromByAlias(String identificationVariable);
 
 	/**
 	 * Find a SqmFrom by its NavigablePath.  Will search any parent contexts as well
 	 *
 	 * @return matching SqmFrom or {@code null}
 	 */
-	SqmFrom findFromByPath(NavigablePath navigablePath);
+	<X extends SqmFrom<?, ?>> X findFromByPath(NavigablePath navigablePath);
 
 	/**
 	 * Find a SqmFrom which exposes a Navigable by the given name.  Will search any
@@ -53,7 +53,7 @@ public interface SqmPathRegistry {
 	 *
 	 * @return matching SqmFrom or {@code null}
 	 */
-	SqmFrom findFromExposing(String navigableName);
+	<X extends SqmFrom<?, ?>> X findFromExposing(String navigableName);
 
 	/**
 	 * Find an SqmPath by its NavigablePath.  Will return a SqmFrom if the NavigablePath
@@ -61,7 +61,7 @@ public interface SqmPathRegistry {
 	 *
 	 * @return matching SqmPath or {@code null}
 	 */
-	SqmPath findPath(NavigablePath path);
+	<X> SqmPath<X> findPath(NavigablePath path);
 
 	/**
 	 * Similar to {@link #findPath}, but accepting a producer to be used
@@ -69,7 +69,7 @@ public interface SqmPathRegistry {
 	 *
 	 * @return The existing or just-created SqmPath
 	 */
-	SqmPath resolvePath(NavigablePath path, Function<NavigablePath, SqmPath> creator);
+	<X> SqmPath<X> resolvePath(NavigablePath path, Function<NavigablePath, SqmPath<X>> creator);
 
 
 	// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

hibernate-core/src/main/java/org/hibernate/query/internal/ParameterMetadataImpl.java

@@ -9,6 +9,7 @@ package org.hibernate.query.internal;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashSet;
+import java.util.IdentityHashMap;
 import java.util.List;
 import java.util.Locale;
 import java.util.Map;
@@ -22,9 +23,11 @@ import org.hibernate.internal.util.StringHelper;
 import org.hibernate.internal.util.collections.CollectionHelper;
 import org.hibernate.internal.util.collections.IdentitySet;
 import org.hibernate.internal.util.compare.ComparableComparator;
+import org.hibernate.metamodel.model.domain.AllowableParameterType;
 import org.hibernate.query.QueryParameter;
 import org.hibernate.query.spi.ParameterMetadataImplementor;
 import org.hibernate.query.spi.QueryParameterImplementor;
+import org.hibernate.query.sqm.tree.expression.SqmParameter;
 
 /**
  * Encapsulates metadata about parameters encountered within a query.
@@ -37,19 +40,19 @@ public class ParameterMetadataImpl implements ParameterMetadataImplementor {
 	 */
 	public static final ParameterMetadataImpl EMPTY = new ParameterMetadataImpl();
 
-	private final Set<QueryParameterImplementor<?>> queryParameters;
+	private final Map<QueryParameterImplementor<?>, List<SqmParameter>> queryParameters;
 
 	private final Set<String> names;
 	private final Set<Integer> labels;
 
 
 	private ParameterMetadataImpl() {
-		this.queryParameters = Collections.emptySet();
+		this.queryParameters = Collections.emptyMap();
 		this.names = Collections.emptySet();
 		this.labels = Collections.emptySet();
 	}
 
-	public ParameterMetadataImpl(Set<QueryParameterImplementor<?>> queryParameters) {
+	public ParameterMetadataImpl(Map<QueryParameterImplementor<?>, List<SqmParameter>> queryParameters) {
 		this.queryParameters = queryParameters;
 
 		// if we have any ordinal parameters, make sure the numbers
@@ -58,7 +61,7 @@ public class ParameterMetadataImpl implements ParameterMetadataImplementor {
 		Set<String> names = null;
 		Set<Integer> labels = null;
 
-		for ( QueryParameterImplementor<?> queryParameter : queryParameters ) {
+		for ( QueryParameterImplementor<?> queryParameter : queryParameters.keySet() ) {
 			if ( queryParameter.getPosition() != null ) {
 				if ( labels == null ) {
 					labels = new HashSet<>();
@@ -90,14 +93,16 @@ public class ParameterMetadataImpl implements ParameterMetadataImplementor {
 		if ( CollectionHelper.isEmpty( positionalQueryParameters )
 				&& CollectionHelper.isEmpty( namedQueryParameters ) ) {
 			// no parameters
-			this.queryParameters = Collections.emptySet();
+			this.queryParameters = Collections.emptyMap();
 			this.names = Collections.emptySet();
 			this.labels = Collections.emptySet();
 		}
 		else {
-			this.queryParameters = new IdentitySet<>();
+			this.queryParameters = new IdentityHashMap<>();
 			if ( positionalQueryParameters != null ) {
-				this.queryParameters.addAll( positionalQueryParameters.values() );
+				for ( QueryParameterImplementor<?> value : positionalQueryParameters.values() ) {
+					this.queryParameters.put( value, Collections.emptyList() );
+				}
 				this.labels = positionalQueryParameters.keySet();
 				verifyOrdinalParamLabels( labels );
 			}
@@ -105,7 +110,9 @@ public class ParameterMetadataImpl implements ParameterMetadataImplementor {
 				labels = null;
 			}
 			if ( namedQueryParameters != null ) {
-				this.queryParameters.addAll( namedQueryParameters.values() );
+				for ( QueryParameterImplementor<?> value : namedQueryParameters.values() ) {
+					this.queryParameters.put( value, Collections.emptyList() );
+				}
 				this.names = namedQueryParameters.keySet();
 			}
 			else {
@@ -160,25 +167,34 @@ public class ParameterMetadataImpl implements ParameterMetadataImplementor {
 		return queryParameters.size();
 	}
 
+	@Override
+	public <T> AllowableParameterType<T> getInferredParameterType(QueryParameter<T> parameter) {
+		final List<SqmParameter> sqmParameters = queryParameters.get( parameter );
+		if ( sqmParameters == null || sqmParameters.isEmpty() ) {
+			return null;
+		}
+		return sqmParameters.get( 0 ).getNodeType();
+	}
+
 	@Override
 	public boolean containsReference(QueryParameter<?> parameter) {
 		//noinspection SuspiciousMethodCalls
-		return queryParameters.contains( parameter );
+		return queryParameters.containsKey( parameter );
 	}
 
 	@Override
 	public void visitParameters(Consumer<QueryParameterImplementor<?>> consumer) {
-		queryParameters.forEach( consumer );
+		queryParameters.keySet().forEach( consumer );
 	}
 
 	@Override
 	public Set<QueryParameterImplementor<?>> getRegistrations() {
-		return Collections.unmodifiableSet( queryParameters );
+		return Collections.unmodifiableSet( queryParameters.keySet() );
 	}
 
 	@Override
 	public boolean hasAnyMatching(Predicate<QueryParameterImplementor<?>> filter) {
-		for ( QueryParameterImplementor<?> queryParameter : queryParameters ) {
+		for ( QueryParameterImplementor<?> queryParameter : queryParameters.keySet() ) {
 			if ( filter.test( queryParameter ) ) {
 				return true;
 			}
@@ -212,13 +228,20 @@ public class ParameterMetadataImpl implements ParameterMetadataImplementor {
 
 	@Override
 	public QueryParameterImplementor<?> getQueryParameter(String name) {
-		for ( QueryParameterImplementor<?> queryParameter : queryParameters ) {
+		for ( QueryParameterImplementor<?> queryParameter : queryParameters.keySet() ) {
 			if ( name.equals( queryParameter.getName() ) ) {
 				return queryParameter;
 			}
 		}
 
-		return null;
+		throw new IllegalArgumentException(
+				String.format(
+						Locale.ROOT,
+						"Could not locate named parameter [%s], expecting one of [%s]",
+						name,
+						String.join( ", ", names )
+				)
+		);
 	}
 
 
@@ -237,7 +260,7 @@ public class ParameterMetadataImpl implements ParameterMetadataImplementor {
 
 	@Override
 	public QueryParameterImplementor<?> getQueryParameter(int positionLabel) {
-		for ( QueryParameterImplementor<?> queryParameter : queryParameters ) {
+		for ( QueryParameterImplementor<?> queryParameter : queryParameters.keySet() ) {
 			if ( queryParameter.getPosition() != null && queryParameter.getPosition() == positionLabel ) {
 				return queryParameter;
 			}

hibernate-core/src/main/java/org/hibernate/query/internal/QueryParameterBindingImpl.java

@@ -20,6 +20,7 @@ import org.hibernate.query.spi.QueryParameterBinding;
 import org.hibernate.query.spi.QueryParameterBindingTypeResolver;
 import org.hibernate.query.spi.QueryParameterBindingValidator;
 import org.hibernate.type.descriptor.WrapperOptions;
+import org.hibernate.type.descriptor.java.CoercionException;
 import org.hibernate.type.descriptor.java.JavaTypeDescriptor;
 import org.hibernate.type.spi.TypeConfiguration;
 
@@ -128,19 +129,19 @@ public class QueryParameterBindingImpl<T> implements QueryParameterBinding<T>, J
 			return false;
 		}
 
-		if ( value instanceof Collection ) {
+		if ( value instanceof Collection && !isRegisteredAsBasicType( value.getClass() ) ) {
-			setBindValues( (Collection) value );
+			//noinspection unchecked
-			return true;
+			setBindValues( (Collection<T>) value );
-		}
-
-		if ( value.getClass().isArray() ) {
-			setBindValues( (Collection) Arrays.asList( (Object[]) value ) );
 			return true;
 		}
 
 		return false;
 	}
 
+	private boolean isRegisteredAsBasicType(Class<?> valueClass) {
+		return getTypeConfiguration().getBasicTypeForJavaType( valueClass ) != null;
+	}
+
 	private void bindValue(T value) {
 		this.isBound = true;
 		this.bindValue = value;
@@ -186,7 +187,20 @@ public class QueryParameterBindingImpl<T> implements QueryParameterBinding<T>, J
 		}
 
 		if ( bindType != null ) {
-			value = bindType.getExpressableJavaTypeDescriptor().coerce( value, this );
+			try {
+				value = bindType.getExpressableJavaTypeDescriptor().coerce( value, this );
+			}
+			catch ( CoercionException ex ) {
+				throw new IllegalArgumentException(
+						String.format(
+								"Parameter value [%s] did not match expected type [%s (%s)]",
+								value,
+								bindType.getTypeName(),
+								temporalTypePrecision == null ? "n/a" : temporalTypePrecision.name()
+						),
+						ex
+				);
+			}
 		}
 		else if ( queryParameter.getHibernateType() != null ) {
 			value = queryParameter.getHibernateType().getExpressableJavaTypeDescriptor().coerce( value, this );

hibernate-core/src/main/java/org/hibernate/query/internal/QueryParameterBindingsImpl.java

@@ -22,11 +22,13 @@ import org.hibernate.cache.spi.QueryKey;
 import org.hibernate.engine.spi.SessionFactoryImplementor;
 import org.hibernate.engine.spi.SharedSessionContractImplementor;
 import org.hibernate.metamodel.mapping.MappingModelExpressable;
+import org.hibernate.metamodel.model.domain.AllowableParameterType;
 import org.hibernate.query.QueryParameter;
 import org.hibernate.query.spi.ParameterMetadataImplementor;
 import org.hibernate.query.spi.QueryParameterBinding;
 import org.hibernate.query.spi.QueryParameterBindings;
 import org.hibernate.query.spi.QueryParameterImplementor;
+import org.hibernate.query.sqm.tree.expression.SqmParameter;
 import org.hibernate.type.descriptor.java.JavaTypeDescriptor;
 import org.hibernate.type.descriptor.java.JavaTypedExpressable;
 import org.hibernate.type.spi.TypeConfiguration;
@@ -106,7 +108,12 @@ public class QueryParameterBindingsImpl implements QueryParameterBindings {
 			);
 		}
 
-		final QueryParameterBinding<T> binding = new QueryParameterBindingImpl<>( queryParameter, sessionFactory, null, queryParametersValidationEnabled );
+		final QueryParameterBinding<T> binding = new QueryParameterBindingImpl<>(
+				queryParameter,
+				sessionFactory,
+				parameterMetadata.getInferredParameterType( queryParameter ),
+				queryParametersValidationEnabled
+		);
 		parameterBindingMap.put( queryParameter, binding );
 
 		return binding;

hibernate-core/src/main/java/org/hibernate/query/spi/QueryEngine.java

@@ -73,6 +73,8 @@ public class QueryEngine {
 		final SqmTranslatorFactory sqmTranslatorFactory = resolveSqmTranslatorFactory( queryEngineOptions, dialect );
 
 		return new QueryEngine(
+				sessionFactory.getUuid(),
+				sessionFactory.getName(),
 				() -> sessionFactory.getRuntimeMetamodels().getJpaMetamodel(),
 				sessionFactory.getSessionFactoryOptions().getCriteriaValueHandlingMode(),
 				sessionFactory.getSessionFactoryOptions().getPreferredSqlTypeCodeForBoolean(),
@@ -99,6 +101,8 @@ public class QueryEngine {
 	private final int preferredSqlTypeCodeForBoolean;
 
 	public QueryEngine(
+			String uuid,
+			String name,
 			Supplier<JpaMetamodel> jpaMetamodelAccess,
 			ValueHandlingMode criteriaValueHandlingMode,
 			int preferredSqlTypeCodeForBoolean,
@@ -118,6 +122,8 @@ public class QueryEngine {
 		this.hqlTranslator = hqlTranslator;
 
 		this.criteriaBuilder = new SqmCriteriaNodeBuilder(
+				uuid,
+				name,
 				this,
 				jpaMetamodelAccess,
 				serviceRegistry,
@@ -152,6 +158,8 @@ public class QueryEngine {
 	 * Simplified constructor mainly meant for Quarkus use
 	 */
 	public QueryEngine(
+			String uuid,
+			String name,
 			JpaMetamodel jpaMetamodel,
 			ValueHandlingMode criteriaValueHandlingMode,
 			int preferredSqlTypeCodeForBoolean,
@@ -170,6 +178,8 @@ public class QueryEngine {
 		dialect.initializeFunctionRegistry( this );
 
 		this.criteriaBuilder = new SqmCriteriaNodeBuilder(
+				uuid,
+				name,
 				this,
 				() -> jpaMetamodel,
 				serviceRegistry,

hibernate-core/src/main/java/org/hibernate/query/sqm/IllegalPathUsageException.java

@@ -1,25 +0,0 @@
-/*
- * Hibernate, Relational Persistence for Idiomatic Java
- *
- * License: GNU Lesser General Public License (LGPL), version 2.1 or later
- * See the lgpl.txt file in the root directory or http://www.gnu.org/licenses/lgpl-2.1.html
- */
-package org.hibernate.query.sqm;
-
-import org.hibernate.query.SemanticException;
-
-/**
- * Indicates an attempt to use an SqmPath in an unsupported manner - e.g., an
- * attempt to de-reference a basic value
- *
- * @author Steve Ebersole
- */
-public class IllegalPathUsageException extends SemanticException {
-	public IllegalPathUsageException(String message) {
-		super( message );
-	}
-
-	public IllegalPathUsageException(String message, Exception cause) {
-		super( message, cause );
-	}
-}

hibernate-core/src/main/java/org/hibernate/query/sqm/NodeBuilder.java

@@ -409,7 +409,7 @@ public interface NodeBuilder extends HibernateCriteriaBuilder {
 	@Override
 	<R> SqmTuple<R> tuple(
 			Class<R> tupleType,
-			List<JpaExpression<?>> expressions);
+			List<? extends JpaExpression<?>> expressions);
 
 	@Override
 	<R> SqmTuple<R> tuple(
@@ -419,7 +419,7 @@ public interface NodeBuilder extends HibernateCriteriaBuilder {
 	@Override
 	<R> SqmTuple<R> tuple(
 			DomainType<R> tupleType,
-			List<JpaExpression<?>> expressions);
+			List<? extends JpaExpression<?>> expressions);
 
 	@Override
 	SqmPredicate and(Expression<Boolean> x, Expression<Boolean> y);
@@ -603,7 +603,7 @@ public interface NodeBuilder extends HibernateCriteriaBuilder {
 	<T> SqmInPredicate<T> in(Expression<? extends T> expression, T... values);
 
 	@Override
-	<T> SqmInPredicate<T> in(Expression<? extends T> expression, List<T> values);
+	<T> SqmInPredicate<T> in(Expression<? extends T> expression, Collection<T> values);
 
 	<T> SqmInPredicate<T> in(Expression<? extends T> expression, SqmSubQuery<T> subQuery);
 
@@ -620,7 +620,7 @@ public interface NodeBuilder extends HibernateCriteriaBuilder {
 	<M extends Map<?,?>> SqmExpression<Integer> mapSize(JpaExpression<M> mapExpression);
 
 	@Override
-	SqmExpression<Integer> mapSize(Map map);
+	<M extends Map<?, ?>> SqmExpression<Integer> mapSize(M map);
 
 	@Override
 	SqmSortSpecification sort(

hibernate-core/src/main/java/org/hibernate/query/sqm/SemanticQueryWalker.java

@@ -141,15 +141,15 @@ public interface SemanticQueryWalker<T> {
 
 	T visitAnyValuedValuedPath(SqmAnyValuedSimplePath<?> path);
 
-	T visitNonAggregatedCompositeValuedPath(NonAggregatedCompositeSimplePath path);
+	T visitNonAggregatedCompositeValuedPath(NonAggregatedCompositeSimplePath<?> path);
 
 	T visitEntityValuedPath(SqmEntityValuedSimplePath<?> path);
 
 	T visitPluralValuedPath(SqmPluralValuedSimplePath<?> path);
 
-	T visitSelfInterpretingSqmPath(SelfInterpretingSqmPath sqmPath);
+	T visitSelfInterpretingSqmPath(SelfInterpretingSqmPath<?> sqmPath);
 	
-	T visitIndexedPluralAccessPath(SqmIndexedCollectionAccessPath path);
+	T visitIndexedPluralAccessPath(SqmIndexedCollectionAccessPath<?> path);
 
 	T visitMaxElementPath(SqmMaxElementPath<?> path);
 
@@ -161,7 +161,7 @@ public interface SemanticQueryWalker<T> {
 
 	T visitTreatedPath(SqmTreatedPath<?, ?> sqmTreatedPath);
 
-	T visitCorrelation(SqmCorrelation correlation);
+	T visitCorrelation(SqmCorrelation<?, ?> correlation);
 
 
 	// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -193,9 +193,9 @@ public interface SemanticQueryWalker<T> {
 
 	T visitLiteral(SqmLiteral<?> literal);
 
-	T visitEnumLiteral(SqmEnumLiteral sqmEnumLiteral);
+	T visitEnumLiteral(SqmEnumLiteral<?> sqmEnumLiteral);
 
-	T visitFieldLiteral(SqmFieldLiteral sqmFieldLiteral);
+	T visitFieldLiteral(SqmFieldLiteral<?> sqmFieldLiteral);
 
 	T visitTuple(SqmTuple<?> sqmTuple);
 
@@ -229,27 +229,27 @@ public interface SemanticQueryWalker<T> {
 
 	T visitUnaryOperationExpression(SqmUnaryOperation<?> expression);
 
-	T visitFunction(SqmFunction tSqmFunction);
+	T visitFunction(SqmFunction<?> tSqmFunction);
 
-	T visitExtractUnit(SqmExtractUnit extractUnit);
+	T visitExtractUnit(SqmExtractUnit<?> extractUnit);
 
 	T visitFormat(SqmFormat sqmFormat);
 
-	T visitCastTarget(SqmCastTarget sqmCastTarget);
+	T visitCastTarget(SqmCastTarget<?> sqmCastTarget);
 
 	T visitTrimSpecification(SqmTrimSpecification trimSpecification);
 
-	T visitDistinct(SqmDistinct distinct);
+	T visitDistinct(SqmDistinct<?> distinct);
 
 	T visitStar(SqmStar sqmStar);
 
-	T visitCoalesce(SqmCoalesce sqmCoalesce);
+	T visitCoalesce(SqmCoalesce<?> sqmCoalesce);
 
-	T visitToDuration(SqmToDuration toDuration);
+	T visitToDuration(SqmToDuration<?> toDuration);
 
 	T visitByUnit(SqmByUnit sqmByUnit);
 
-	T visitDurationUnit(SqmDurationUnit durationUnit);
+	T visitDurationUnit(SqmDurationUnit<?> durationUnit);
 
 	// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 	// predicates
@@ -306,7 +306,7 @@ public interface SemanticQueryWalker<T> {
 
 	T visitPluralAttributeSizeFunction(SqmCollectionSize function);
 
-	T visitMapEntryFunction(SqmMapEntryReference function);
+	T visitMapEntryFunction(SqmMapEntryReference<?, ?> function);
 
 	T visitFullyQualifiedClass(Class<?> namedClass);
 }

hibernate-core/src/main/java/org/hibernate/query/sqm/SqmPathSource.java

@@ -11,6 +11,7 @@ import javax.persistence.metamodel.Bindable;
 
 import org.hibernate.metamodel.model.domain.DomainType;
 import org.hibernate.query.hql.spi.SqmCreationState;
+import org.hibernate.query.sqm.tree.SqmExpressableAccessor;
 import org.hibernate.query.sqm.tree.domain.SqmPath;
 
 /**
@@ -22,7 +23,7 @@ import org.hibernate.query.sqm.tree.domain.SqmPath;
  *
  * @author Steve Ebersole
  */
-public interface SqmPathSource<J> extends SqmExpressable<J>, Bindable<J> {
+public interface SqmPathSource<J> extends SqmExpressable<J>, Bindable<J>, SqmExpressableAccessor<J> {
 	/**
 	 * The name of this thing.  Mainly used in logging and when creating a
 	 * {@link org.hibernate.query.NavigablePath}
@@ -38,15 +39,20 @@ public interface SqmPathSource<J> extends SqmExpressable<J>, Bindable<J> {
 	/**
 	 * Find a SqmPathSource by name relative to this source.
 	 *
-	 * @throws IllegalPathUsageException to indicate that this source cannot be de-referenced
+	 * @throws IllegalStateException to indicate that this source cannot be de-referenced
 	 */
-	SqmPathSource<?> findSubPathSource(String name) throws IllegalPathUsageException;
+	SqmPathSource<?> findSubPathSource(String name);
 
 	/**
 	 * Create an SQM path for this source relative to the given left-hand side
 	 */
 	SqmPath<J> createSqmPath(SqmPath<?> lhs);
 
+	@Override
+	default SqmExpressable<J> getExpressable() {
+		return (SqmExpressable<J>) getSqmPathType();
+	}
+
 	default <X extends DomainType> X sqmAs(Class<X> targetType) {
 		if ( targetType.isInstance( this ) ) {
 			//noinspection unchecked

hibernate-core/src/main/java/org/hibernate/query/sqm/function/NamedSqmFunctionDescriptor.java

@@ -113,7 +113,7 @@ public class NamedSqmFunctionDescriptor
 		boolean firstPass = true;
 		for ( SqlAstNode arg : sqlAstArguments ) {
 			if ( !firstPass ) {
-				sqlAppender.appendSql( ", " );
+				sqlAppender.appendSql( "," );
 			}
 			if ( caseWrapper && !( arg instanceof Distinct ) ) {
 				sqlAppender.appendSql( "case when " );

hibernate-core/src/main/java/org/hibernate/query/sqm/function/SelfRenderingSqmAggregateFunction.java

@@ -14,6 +14,7 @@ import org.hibernate.query.sqm.produce.function.FunctionReturnTypeResolver;
 import org.hibernate.query.sqm.sql.BaseSqmToSqlAstConverter;
 import org.hibernate.query.sqm.sql.SqmToSqlAstConverter;
 import org.hibernate.query.sqm.tree.SqmTypedNode;
+import org.hibernate.query.sqm.tree.expression.SqmAggregateFunction;
 import org.hibernate.query.sqm.tree.expression.SqmDistinct;
 import org.hibernate.query.sqm.tree.predicate.SqmPredicate;
 import org.hibernate.query.sqm.tree.select.SqmSelectableNode;
@@ -22,7 +23,8 @@ import org.hibernate.sql.ast.tree.predicate.Predicate;
 /**
  * @author Christian Beikov
  */
-public class SelfRenderingSqmAggregateFunction<T> extends SelfRenderingSqmFunction<T> {
+public class SelfRenderingSqmAggregateFunction<T> extends SelfRenderingSqmFunction<T>
+		implements SqmAggregateFunction<T> {
 
 	private final SqmPredicate filter;
 
@@ -55,6 +57,11 @@ public class SelfRenderingSqmAggregateFunction<T> extends SelfRenderingSqmFuncti
 		);
 	}
 
+	@Override
+	public SqmPredicate getFilter() {
+		return filter;
+	}
+
 	@Override
 	public void appendHqlString(StringBuilder sb) {
 		final List<? extends SqmTypedNode<?>> arguments = getArguments();

hibernate-core/src/main/java/org/hibernate/query/sqm/internal/ConcreteSqmSelectQueryPlan.java

@@ -12,6 +12,7 @@ import java.util.List;
 import java.util.Map;
 import javax.persistence.Tuple;
 import javax.persistence.TupleElement;
+import javax.persistence.criteria.CompoundSelection;
 
 import org.hibernate.ScrollMode;
 import org.hibernate.engine.jdbc.env.spi.JdbcEnvironment;
@@ -22,6 +23,7 @@ import org.hibernate.internal.EmptyScrollableResults;
 import org.hibernate.internal.util.streams.StingArrayCollector;
 import org.hibernate.metamodel.mapping.MappingModelExpressable;
 import org.hibernate.query.IllegalQueryOperationException;
+import org.hibernate.query.criteria.JpaSelection;
 import org.hibernate.query.spi.QueryEngine;
 import org.hibernate.query.spi.QueryOptions;
 import org.hibernate.query.spi.QueryParameterImplementor;
@@ -32,6 +34,7 @@ import org.hibernate.query.sqm.sql.SqmTranslation;
 import org.hibernate.query.sqm.sql.SqmTranslator;
 import org.hibernate.query.sqm.sql.SqmTranslatorFactory;
 import org.hibernate.query.sqm.tree.expression.SqmParameter;
+import org.hibernate.query.sqm.tree.select.SqmJpaCompoundSelection;
 import org.hibernate.query.sqm.tree.select.SqmSelectStatement;
 import org.hibernate.query.sqm.tree.select.SqmSelection;
 import org.hibernate.sql.ast.SqlAstTranslator;
@@ -140,10 +143,22 @@ public class ConcreteSqmSelectQueryPlan<R> implements SelectQueryPlan<R> {
 		if ( Tuple.class.isAssignableFrom( resultType ) ) {
 			// resultType is Tuple..
 			if ( queryOptions.getTupleTransformer() == null ) {
-				final Map<TupleElement<?>, Integer> tupleElementMap = new IdentityHashMap<>( selections.size() );
+				final Map<TupleElement<?>, Integer> tupleElementMap;
-				for ( int i = 0; i < selections.size(); i++ ) {
+				if ( selections.size() == 1 && selections.get( 0 ).getSelectableNode() instanceof CompoundSelection<?> ) {
-					final SqmSelection<?> selection = selections.get( i );
+					final List<? extends JpaSelection<?>> selectionItems = selections.get( 0 )
-					tupleElementMap.put( selection.getSelectableNode(), i );
+							.getSelectableNode()
+							.getSelectionItems();
+					tupleElementMap = new IdentityHashMap<>( selectionItems.size() );
+					for ( int i = 0; i < selectionItems.size(); i++ ) {
+						tupleElementMap.put( selectionItems.get( i ), i );
+					}
+				}
+				else {
+					tupleElementMap = new IdentityHashMap<>( selections.size() );
+					for ( int i = 0; i < selections.size(); i++ ) {
+						final SqmSelection<?> selection = selections.get( i );
+						tupleElementMap.put( selection.getSelectableNode(), i );
+					}
 				}
 				return (RowTransformer<R>) new RowTransformerJpaTupleImpl( new TupleMetadata( tupleElementMap ) );
 			}