Question

Hibernate is generating the SQL for the following query :

select pcp.id from PersistentContentProfile pcp where pcp.service.id = :service_id and exists(select 1 from Subscription s where s.contentProfile.id = pcp.id and s.status in (:statuses))

as native PostgreSQL query :

select persistent0_.id as col_0_0_ 
from ems.nlt_content_profile persistent0_ 
where 
1=2 and 
persistent0_.service_id=? and 
(exists (select 1 
        from ems.nlt_subscription subscripti1_ 
        where subscripti1_.content_profile_id=persistent0_.id and 
        (subscripti1_.status in (?,?))))

Observed

‘1=2’

getting appended to the query? Why is this getting added? Due to this, no records are retrieved.

Answer 1

I figured out it was due to a configuration mistake. I was using @ForceDiscriminator and only the abstract class was configured in persistence.xml while configuration for any concrete subsclass was missing.