On Fri, Jan 17, 2003 at 13:39:11 -0500, Greg Stark <[EMAIL PROTECTED]> wrote: > > So it would be possible to say for example: > > select min(column1),lookup_min(column1,column2) from tab > > to do the equivalent of: > > select column1,column2 where column1=(select min(column1) from tab) limit 1 > > except it would be way more efficient. (Especially if there's an index on > column1 and postgres were taught to use indexes for min/max, but that's a > different story.)
The following will be more efficient than your function if there is a usable index on column1: select column1,column2 from tab order by column 1 limit 1 ---------------------------(end of broadcast)--------------------------- TIP 3: 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
