diff --git a/hibernate-core/src/main/java/org/hibernate/query/sqm/NodeBuilder.java b/hibernate-core/src/main/java/org/hibernate/query/sqm/NodeBuilder.java
index b353820ef5..bca66ab628 100644
--- a/hibernate-core/src/main/java/org/hibernate/query/sqm/NodeBuilder.java
+++ b/hibernate-core/src/main/java/org/hibernate/query/sqm/NodeBuilder.java
@@ -735,6 +735,62 @@ public interface NodeBuilder extends HibernateCriteriaBuilder {
 	 */
 	<T> SqmExpression<T[]> arrayFill(T element, Integer elementCount);
 
+	/**
+	 * Determines all 1-based positions of an element in an array.
+	 *
+	 * @since 6.4
+	 */
+	<T> SqmExpression<int[]> arrayPositions(SqmExpression<T[]> arrayExpression, SqmExpression<T> elementExpression);
+
+	/**
+	 * Determines all 1-based positions of an element in an array.
+	 *
+	 * @since 6.4
+	 */
+	<T> SqmExpression<int[]> arrayPositions(SqmExpression<T[]> arrayExpression, T element);
+
+	/**
+	 * Determines all 1-based positions of an element in an array.
+	 *
+	 * @since 6.4
+	 */
+	<T> SqmExpression<int[]> arrayPositions(T[] array, SqmExpression<T> elementExpression);
+
+	/**
+	 * Determines all 1-based positions of an element in an array.
+	 *
+	 * @since 6.4
+	 */
+	<T> SqmExpression<int[]> arrayPositions(T[] array, T element);
+
+	/**
+	 * Determines all 1-based positions of an element in an array.
+	 *
+	 * @since 6.4
+	 */
+	<T> SqmExpression<List<Integer>> arrayPositionsList(SqmExpression<T[]> arrayExpression, SqmExpression<T> elementExpression);
+
+	/**
+	 * Determines all 1-based positions of an element in an array.
+	 *
+	 * @since 6.4
+	 */
+	<T> SqmExpression<List<Integer>> arrayPositionsList(SqmExpression<T[]> arrayExpression, T element);
+
+	/**
+	 * Determines all 1-based positions of an element in an array.
+	 *
+	 * @since 6.4
+	 */
+	<T> SqmExpression<List<Integer>> arrayPositionsList(T[] array, SqmExpression<T> elementExpression);
+
+	/**
+	 * Determines all 1-based positions of an element in an array.
+	 *
+	 * @since 6.4
+	 */
+	<T> SqmExpression<List<Integer>> arrayPositionsList(T[] array, T element);
+
 	// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 	// Array functions for collection types
 
@@ -1333,6 +1389,62 @@ public interface NodeBuilder extends HibernateCriteriaBuilder {
 	 */
 	<T> SqmExpression<Collection<T>> collectionFill(T element, Integer elementCount);
 
+	/**
+	 * Determines all 1-based positions of an element in a basic collection.
+	 *
+	 * @since 6.4
+	 */
+	<T> SqmExpression<int[]> collectionPositions(SqmExpression<? extends Collection<? super T>> collectionExpression, SqmExpression<T> elementExpression);
+
+	/**
+	 * Determines all 1-based positions of an element in a basic collection.
+	 *
+	 * @since 6.4
+	 */
+	<T> SqmExpression<int[]> collectionPositions(SqmExpression<? extends Collection<? super T>> collectionExpression, T element);
+
+	/**
+	 * Determines all 1-based positions of an element in a basic collection.
+	 *
+	 * @since 6.4
+	 */
+	<T> SqmExpression<int[]> collectionPositions(Collection<? super T> collection, SqmExpression<T> elementExpression);
+
+	/**
+	 * Determines all 1-based positions of an element in a basic collection.
+	 *
+	 * @since 6.4
+	 */
+	<T> SqmExpression<int[]> collectionPositions(Collection<? super T> collection, T element);
+
+	/**
+	 * Determines all 1-based positions of an element in a basic collection.
+	 *
+	 * @since 6.4
+	 */
+	<T> SqmExpression<List<Integer>> collectionPositionsList(SqmExpression<? extends Collection<? super T>> collectionExpression, SqmExpression<T> elementExpression);
+
+	/**
+	 * Determines all 1-based positions of an element in a basic collection.
+	 *
+	 * @since 6.4
+	 */
+	<T> SqmExpression<List<Integer>> collectionPositionsList(SqmExpression<? extends Collection<? super T>> collectionExpression, T element);
+
+	/**
+	 * Determines all 1-based positions of an element in a basic collection.
+	 *
+	 * @since 6.4
+	 */
+	<T> SqmExpression<List<Integer>> collectionPositionsList(Collection<? super T> collection, SqmExpression<T> elementExpression);
+
+	/**
+	 * Determines all 1-based positions of an element in a basic collection.
+	 *
+	 * @since 6.4
+	 */
+	<T> SqmExpression<List<Integer>> collectionPositionsList(Collection<? super T> collection, T element);
+
 	// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 	// Covariant overrides
 
diff --git a/hibernate-core/src/main/java/org/hibernate/query/sqm/internal/SqmCriteriaNodeBuilder.java b/hibernate-core/src/main/java/org/hibernate/query/sqm/internal/SqmCriteriaNodeBuilder.java
index 6ad9c8cd38..3ca5875a7b 100644
--- a/hibernate-core/src/main/java/org/hibernate/query/sqm/internal/SqmCriteriaNodeBuilder.java
+++ b/hibernate-core/src/main/java/org/hibernate/query/sqm/internal/SqmCriteriaNodeBuilder.java
@@ -3685,6 +3685,82 @@ public class SqmCriteriaNodeBuilder implements NodeBuilder, SqmCreationContext,
 		);
 	}
 
+	@Override
+	public <T> SqmExpression<int[]> arrayPositions(
+			SqmExpression<T[]> arrayExpression,
+			SqmExpression<T> elementExpression) {
+		return getFunctionDescriptor( "array_positions" ).generateSqmExpression(
+				asList( arrayExpression, elementExpression ),
+				null,
+				queryEngine
+		);
+	}
+
+	@Override
+	public <T> SqmExpression<int[]> arrayPositions(SqmExpression<T[]> arrayExpression, T element) {
+		return getFunctionDescriptor( "array_positions" ).generateSqmExpression(
+				asList( arrayExpression, value( element ) ),
+				null,
+				queryEngine
+		);
+	}
+
+	@Override
+	public <T> SqmExpression<int[]> arrayPositions(T[] array, SqmExpression<T> elementExpression) {
+		return getFunctionDescriptor( "array_positions" ).generateSqmExpression(
+				asList( value( array ), elementExpression ),
+				null,
+				queryEngine
+		);
+	}
+
+	@Override
+	public <T> SqmExpression<int[]> arrayPositions(T[] array, T element) {
+		return getFunctionDescriptor( "array_positions" ).generateSqmExpression(
+				asList( value( array ), value( element ) ),
+				null,
+				queryEngine
+		);
+	}
+
+	@Override
+	public <T> SqmExpression<List<Integer>> arrayPositionsList(
+			SqmExpression<T[]> arrayExpression,
+			SqmExpression<T> elementExpression) {
+		return getFunctionDescriptor( "array_positions_list" ).generateSqmExpression(
+				asList( arrayExpression, elementExpression ),
+				null,
+				queryEngine
+		);
+	}
+
+	@Override
+	public <T> SqmExpression<List<Integer>> arrayPositionsList(SqmExpression<T[]> arrayExpression, T element) {
+		return getFunctionDescriptor( "array_positions_list" ).generateSqmExpression(
+				asList( arrayExpression, value( element ) ),
+				null,
+				queryEngine
+		);
+	}
+
+	@Override
+	public <T> SqmExpression<List<Integer>> arrayPositionsList(T[] array, SqmExpression<T> elementExpression) {
+		return getFunctionDescriptor( "array_positions_list" ).generateSqmExpression(
+				asList( value( array ), elementExpression ),
+				null,
+				queryEngine
+		);
+	}
+
+	@Override
+	public <T> SqmExpression<List<Integer>> arrayPositionsList(T[] array, T element) {
+		return getFunctionDescriptor( "array_positions_list" ).generateSqmExpression(
+				asList( value( array ), value( element ) ),
+				null,
+				queryEngine
+		);
+	}
+
 	@Override
 	public <T> SqmExpression<Integer> arrayLength(SqmExpression<T[]> arrayExpression) {
 		return getFunctionDescriptor( "array_length" ).generateSqmExpression(
@@ -5384,4 +5460,88 @@ public class SqmCriteriaNodeBuilder implements NodeBuilder, SqmCreationContext,
 				queryEngine
 		);
 	}
+
+	@Override
+	public <T> SqmExpression<int[]> collectionPositions(
+			SqmExpression<? extends Collection<? super T>> collectionExpression,
+			SqmExpression<T> elementExpression) {
+		return getFunctionDescriptor( "array_positions" ).generateSqmExpression(
+				asList( collectionExpression, elementExpression ),
+				null,
+				queryEngine
+		);
+	}
+
+	@Override
+	public <T> SqmExpression<int[]> collectionPositions(
+			SqmExpression<? extends Collection<? super T>> collectionExpression,
+			T element) {
+		return getFunctionDescriptor( "array_positions" ).generateSqmExpression(
+				asList( collectionExpression, value( element ) ),
+				null,
+				queryEngine
+		);
+	}
+
+	@Override
+	public <T> SqmExpression<int[]> collectionPositions(
+			Collection<? super T> collection,
+			SqmExpression<T> elementExpression) {
+		return getFunctionDescriptor( "array_positions" ).generateSqmExpression(
+				asList( value( collection ), elementExpression ),
+				null,
+				queryEngine
+		);
+	}
+
+	@Override
+	public <T> SqmExpression<int[]> collectionPositions(Collection<? super T> collection, T element) {
+		return getFunctionDescriptor( "array_positions" ).generateSqmExpression(
+				asList( value( collection ), value( element ) ),
+				null,
+				queryEngine
+		);
+	}
+
+	@Override
+	public <T> SqmExpression<List<Integer>> collectionPositionsList(
+			SqmExpression<? extends Collection<? super T>> collectionExpression,
+			SqmExpression<T> elementExpression) {
+		return getFunctionDescriptor( "array_positions_list" ).generateSqmExpression(
+				asList( collectionExpression, elementExpression ),
+				null,
+				queryEngine
+		);
+	}
+
+	@Override
+	public <T> SqmExpression<List<Integer>> collectionPositionsList(
+			SqmExpression<? extends Collection<? super T>> collectionExpression,
+			T element) {
+		return getFunctionDescriptor( "array_positions_list" ).generateSqmExpression(
+				asList( collectionExpression, value( element ) ),
+				null,
+				queryEngine
+		);
+	}
+
+	@Override
+	public <T> SqmExpression<List<Integer>> collectionPositionsList(
+			Collection<? super T> collection,
+			SqmExpression<T> elementExpression) {
+		return getFunctionDescriptor( "array_positions_list" ).generateSqmExpression(
+				asList( value( collection ), elementExpression ),
+				null,
+				queryEngine
+		);
+	}
+
+	@Override
+	public <T> SqmExpression<List<Integer>> collectionPositionsList(Collection<? super T> collection, T element) {
+		return getFunctionDescriptor( "array_positions_list" ).generateSqmExpression(
+				asList( value( collection ), value( element ) ),
+				null,
+				queryEngine
+		);
+	}
 }