Marco Zühlke ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=61f9220... ) *updated* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiYjUzYWE1MjJi... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-16369?atlOrigin=eyJpIjoiYjUzYW... ) HHH-16369 ( https://hibernate.atlassian.net/browse/HHH-16369?atlOrigin=eyJpIjoiYjUzYW... ) PostGIS function extent(geometry) does not work ( https://hibernate.atlassian.net/browse/HHH-16369?atlOrigin=eyJpIjoiYjUzYW... ) Change By: Marco Zühlke ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=61f9220... ) I'm troubleshooting with an issue when using PostGIS function st_extent in HQL queries. Entity/Repository: {code:java} @Entity @Table(name = "field") @Data public class GeometryEntity { @Id @GeneratedValue(generator = "system-uuid") @GenericGenerator(name = "system-uuid", strategy = "org.hibernate.id.UUIDGenerator") private UUID id; @Column(name = "the_geom") private Polygon geometry; } public interface GeometryEntityRepository extends CrudRepository<GeometryEntity, UUID> { @Query(value = "select extent(geometry) from GeometryEntity") Optional<Polygon> getExtent getExtentByHQLQuery (); @Query(value = "select envelope st_extent (geometry) from GeometryEntity") Optional<Polygon> getEnvelope getExtentByST_PrefixedFunctionName (); } @Query(value = "select st_extent(the_geom) from field", nativeQuery = true) Optional<Polygon> getExtentByNativeQuery(); } {code} According to the doc [https://docs.jboss.org/hibernate/orm/6.1/userguide/html_single/Hibernate_... and st_extent should work when using HQL queries. I have three different queries, two of them are using HQL, the other one is written native. None of them work, all results in an error. The attempt to call getExtent {{getExtentByHQLQuery}} () results in: {noformat} 2023-03-24T17:19:37.115+01:00 ERROR 456308 --- [           main] o.h.engine.jdbc.spi.SqlExceptionHelper   : ERROR: function extent(geometry) does not exist Hinweis: No function matches the given name and argument types. You might need to add explicit type casts. Position: 8 org.springframework.dao.InvalidDataAccessResourceUsageException: JDBC exception executing SQL [select extent(g1_0.the_geom) from field g1_0]; SQL [n/a] {noformat} The attempt to call { {getExtentByST_PrefixedFunctionName}}() and {{getExtentByNativeQuery()}}results in: { noformat} org.springframework.core.convert.ConverterNotFoundException: No converter found capable of converting from type [org.springframework.data.jpa.repository.query.AbstractJpaQuery$TupleConverter$TupleBackedMap] to type [org.locationtech.jts.geom.Polygon] Using the st_envelope function works as expected at org. springframework.core.convert.support.GenericConversionService.handleConverterNotFound(GenericConversionService.java:322){noformat} - * spring-boot:3.0.4 - * postgres/postgis - * hibernate-spatial:6.1.7 Simple app to reproduce the error: [ https://github.com/marcozet/spring-boot-3-hibernate-spatial |https://github.com/marcozet/spring-boot-3-hibernate-spatial] ( https://hibernate.atlassian.net/browse/HHH-16369#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-16369#add-comment?atlOrigin=ey... ) Get Jira notifications on your phone! Download the Jira Cloud app for Android ( https://play.google.com/store/apps/details?id=com.atlassian.android.jira.... ) or iOS ( https://itunes.apple.com/app/apple-store/id1006972087?pt=696495&ct=Em... ) This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100219- sha1:ac3e918 )