I ran analyze; several times. rgds Antony Paul
On Mon, 07 Feb 2005 12:53:30 +0100, Jan Poslusny <pajout@gingerall.cz> wrote: > It depends on many circumstances, but, at first, simple question: Did > you run vacuum analyze? > I am satisfied with functional indexes - it works in my pg 7.4.x. > > Antony Paul wrote: > > >On more investigation I found that index scan is not used if the query > >have a function in it like lower() and an index exist for lower() > >column. > > > >rgds > >Antony Paul > > > > > >On Mon, 7 Feb 2005 14:37:15 +0530, Antony Paul <[EMAIL PROTECTED]> wrote: > > > > > >>Hi all, > >> I am facing a strange problem when I run EXPLAIN against a table > >>having more than 100000 records. The query have lot of OR conditions > >>and when parts of the query is removed it is using index. To analyse > >>it I created a table with a single column, inserted 100000 > >>records(random number) in it created index and run a query which > >>returns 1 record which have no or condition and it was using index. I > >>added an OR conditon and is using sequential scan. I set the > >>enable_seqscan to off. I ran the tests again and is using index scan. > >> So which one I have to use. Is this any bug in Explain. > >> > >>rgds > >>Antony Paul. > >> > >> > >> > > > >---------------------------(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 > > > > > > > ---------------------------(end of broadcast)--------------------------- TIP 4: Don't 'kill -9' the postmaster
