SELECT HQL without entity alias results in `SELECT COUNT(null)` query

[kotelnik]

When writing e.g. this query:

@Query("SELECT id FROM Person")
Page<Long> findIdsPageable(Pageable pageable);

I get always only one page of data and I can see this in the log:

Hibernate: select p1_0.ID from Person p1_0 fetch first ? rows only
Hibernate: select count(null) from Person p1_0
2025-01-13 22:59:44,762 (main) WARN  [org.hibernate.engine.jdbc.spi.SqlExceptionHelper] SQL Warning Code: -1003, SQLState: 01003
2025-01-13 22:59:44,763 (main) WARN  [org.hibernate.engine.jdbc.spi.SqlExceptionHelper] warning: null value eliminated in set function

When using previous version of spring-data-jpa (3.3.7), I can see correct count(...) query and paging is working correctly:

Hibernate: select p1_0.ID from Person p1_0 fetch first ? rows only
Hibernate: select count(p1_0.ID) from Person p1_0

Is there something I should do differently to fix this issue?

[mp911de]

For the time being, please update your query by adding an alias to the FROM Person clause updating it to SELECT p.id FROM Person p. While your query meets the HQL spec, it isn't compatible with JPQL, which requires aliases for entity names.