[Tom Lane - Tue at 10:29:53PM -0500] > These are not actually exactly the same thing. In particular, I suppose > your table contains a lot of nulls?
Yes; I'm sorry I was a bit quick with the first posting. ---------------------------(end of broadcast)--------------------------- TIP 1: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly