Shiar <[EMAIL PROTECTED]> writes: >> EXPLAIN ANALYZE SELECT id FROM userinfo WHERE icq <> '0'; > Seq Scan on userinfo (cost=0.00..47355.90 rows=849244 width=4) (actual > time=0.563..1222.963 rows=48797 loops=1) > Filter: (icq <> 0::bigint) > Total runtime: 1258.703 ms
The rows estimate is way off, which might or might not have much to do with the issue, but it's surely suspicious. > We're running PostgreSQL 7.4.1 on a Debian/Linux 2.4 system with 4GB RAM and a > fast SCSI RAID array, with settings: Update to 7.4.2 and follow the procedure in the release notes about fixing pg_statistic; that may make things better. int8 columns are vulnerable to the statistic misalignment bug. regards, tom lane ---------------------------(end of broadcast)--------------------------- TIP 2: you can get off all lists at once with the unregister command (send "unregister YourEmailAddressHere" to [EMAIL PROTECTED])