如何在更新查询中强制Hibernate使用AND？

Question

I am trying to update a raw by composite primary key by using hibernate.

Hibernate uses the next style for such updates:

update mytable set mycolumn=321 where (left_pk, right_pk) = (123, 456);

Is it possible to force hibernate to use the next style?:

update mytable set mycolumn=321 where left_pk = 123 and right_pk = 456;

Both queries work but with a huge difference (at least in MariaDB).
If we use repeatable read transaction then the first query locks the whole table for updates and the second query locks only the single row for updates.

I would prefer to lock only a single row, so I need to use the second query.

Answer 1

You can go for NamedQueries approach in Hibernate, For example:

 //Create Query 
 @NamedQueries({ @NamedQuery(name = "   YOUR QUERY NAME", 
        query = "from DeptEmployee where department = :department and emp = :emp") })


// set multiple parameters
 query.setParameter("department",department)
     .setParameter("emp", emp)

Try giving this a shot.