PSQLException: The column name clazz_ was not found in this ResultSet

Question

I am trying to fetch a PlaceEntity. I\'ve previously stored a bunch of GooglePlaceEntity objects where

Answer 1

In case of @Inheritance(strategy = InheritanceType.JOINED), when you retrieve data without nativeQuery=True in JPA repository, Hibernate will execute SQL like the following:

SELECT
table0_.id as id1_1_,
table0_.column2 as column2_2_1_,
... (main_table cols)
table0_1_.column1 as column1_1_0_,
... (table1 to N-1 cols)
table0_N_.column1 as column1_1_9_,
... (tableN-th cols)
CASE WHEN table0_1_.id is not null then 1
    ... (table1 to N-1 cols)
    WHEN table0_N_.id is not null then N
    WHEN table0_.id is not null then 0
    END as clazz_
FROM table table0_
left outer join table1 table0_1_ on table0_.id=table0_1_.id
... (other tables join)
left outer join table2 table0_N_ on table0_.id=table0_N_.id

From the above SQL you can see clazz specification. If you want to map ResultSet to your super instance (PlaceEntity), you should specify clazz_ column in SELECT by yourself.

In your case it will be:

@Query(value = "" +
            "SELECT *, 0 AS clazz_ " +
            "FROM place " +
            "WHERE earth_distance( " +
            "   ll_to_earth(place.latitude, place.longitude), " +
            "   ll_to_earth(:latitude, :longitude) " + 
            ") < :radius",
            nativeQuery = true)

Answer 2

You should use the name of the class instead of the table name on the query. Change place to PlaceEntity.

@Query(value = "" +
    "SELECT * " +
    "FROM place JOIN google_place ON google_place.id = place.id " +
    "WHERE earth_distance( " +
    "   ll_to_earth(place.latitude, place.longitude), " +
    "   ll_to_earth(:latitude, :longitude) " + 
    ") < :radius",
    nativeQuery = true)
List<GooglePlaceEntity> findNearby(@Param("latitude") Float latitude,
                               @Param("longitude") Float longitude,
                               @Param("radius") Integer radius);