[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-2826) IS [NOT] NULL checks with component values

[ http://opensource.atlassian.com/projects/hibernate/browse/HHH-2826?page=c... ] Steve Ebersole commented on HHH-2826: ------------------------------------- Note to self: 1) IS NULL should get expanded with AND Consider: from Person p where p.name is null The implication here is we want persons where all parts of their name are null: select ... from person p where (p.f_name is null and p.l_name is null) 2) IS NOT NULL should get expanded with OR Consider: from Person p where p.name is not null Here, the implication is that not (all parts of their name are null); if any part of the name is not null then this check should logically succeed select ... from person p where (p.f_name is not null or p.l_name is not null) the above being functionally equivalent to: select ... from person p where not ( p.f_name is null and p.l_name is null ) -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira