jpql order by subquery produces unexpected AST node exception

Question

I translated a working (postgre)sql query to jpql, but hibernate throws a

org.hibernate.hql.ast.QuerySyntaxException: unexpected AST node exception

Answer 1

JPQL doesn't support subqueries in order by. If I correctly understand your query, you can try something like this:

select p 
from Piece p left join p.user.receivedVotes rv
group by p
order by count(rv) desc, p.index