On Mon, 31 Jan 2005, Don Drake wrote: > You learn something new everyday. I've never seen that syntax before, > and it works like a charm!!
Actually, now that I think about it, I wonder if that's a good thing to use because I don't think that'll use indexes to do the search. You may want to do some testing to see how it runs for you. > On Mon, 31 Jan 2005 13:31:34 -0800 (PST), Stephan Szabo > <[EMAIL PROTECTED]> wrote: > > > > On Sun, 30 Jan 2005, Don Drake wrote: > > > > > OK, I have a function that finds records that changed in a set of > > > tables and attempts to insert them into a data warehouse. > > > > > > There's a large outer loop of candidate rows and I inspect them to see > > > if the values really changed before inserting. > > > > > > My problem is that when I look to see if the row exists in the > > > warehouse already, based on some IDs, it fails when an ID is NULL. > > > The ID is nullable, so that's not a problem. > > > > > > But I'm forced to write an IF statement looking for the potential NULL > > > and write 2 queries: > > > > > > IF omcr_id is null > > > select * from .... > > > WHERE omcr_id is NULL > > > AND ... > > > ELSE > > > select * from .... > > > WHERE omcr_id=candidate.omcr_id > > > AND .... > > > END IF; > > > > Hmm, perhaps some form like: > > > > WHERE not(candidate.omcr_id is distinct from omcr_id) ---------------------------(end of broadcast)--------------------------- TIP 4: Don't 'kill -9' the postmaster