How do I Return SUM from JPA Query Using Hibernate and Spring-boot?

Question

I am trying to use JPA and JPQL to query my entity and return the sum of a column (total days) from the table. I thought I had set it up right but I am getting this error:<

Answer 1

It's not a valid JPQL.

You either should have:

@Query("SELECT SUM(m.totalDays) FROM MyEntity m")

or, make it a native one:

@Query(value = "SELECT SUM(total_days) FROM MyEntity", nativeQuery = true)

Answer 2

change your JPQL to @Query("SELECT SUM(m.totalDays) FROM MyEntity m")