Is the below Hibernate query is correct? Please explain.

public Object doInHibernate(Session session)
throws HibernateException, SQLException {
final String updateState = "update qrtz_triggers set trigger_state='WAITING'"
+ "where trigger_name in ("
+ " select trigger_name"
+ " from qrtz_triggers"
+ " where trigger_state like 'ACQUIRED'"
+ " AND TRIGGER_NAME NOT IN (SELECT TRIGGER_NAME FROM QRTZ_FIRED_TRIGGERS)"
+ ");";

Query q = session.createQuery(updateState);
return q.uniqueResult();
}