You need to convert the int's to bigints. select id where col1 = 1::bigint and col2 = 1::bigint
Regards, Ed -----Original Message----- From: Tim McAuley <[EMAIL PROTECTED]> Date: Wed, 30 Jul 2003 13:46:46 To:[EMAIL PROTECTED] Subject: [GENERAL] Unused Indexes Hi, I have a table which I have populated with over 5000 entries. There is a combined index placed on two of the columns (both bigint). I am trying a simple select (i.e. select id where col1 = 1 and col2 = 1) covering these two columns and it keeps using a seq scan. Is this correct? I would have thought that with this number of entries that an index scan should be used. I am testing this using postgresql 7.3.3 on windows 2000 using cygwin. Doing "set enable_seqscan to off" does not change the results of the explain operation. I also tried setting a single index on just one of the columns and running an appropriate search; it still uses a seq scan. At what stage will the planner normally start using an index scan? Any hints appreciated. Tim ---------------------------(end of broadcast)--------------------------- TIP 4: Don't 'kill -9' the postmaster ---------------------------(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