On Fri, Jun 10, 2005 at 01:45:05PM -0400, Clark Slater wrote: > Hi- > > Would someone please enlighten me as > to why I'm not seeing a faster execution > time on the simple scenario below?
Because you need to extract a huge number of rows via a seqscan, sort them and then throw them away, I think. > explain analyze select * from test where productlistid=3 and typeid=9 > order by partnumber limit 15; Create an index on (productlistid, typeid, partnumber) then select * from test where productlistid=3 and typeid=9 order by productlistid, typeid, partnumber LIMIT 15; ? Cheers, Steve ---------------------------(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