Andrei Bintintan mentioned : => Your problem depends on what interface/programming language you're using.
Yep, I tried to do it using rules or triggers, but I can't get it to do what I want exactly, and it's not a good idea to put any rules or triggers on my database. I'm sticking to psql though, and managed to create the query with a nested nullif and coalesce to make my query fail if there are 0 rows matching for an update or delete. Cheers Stef ---------------------------(end of broadcast)--------------------------- TIP 8: explain analyze is your friend
