Got an explain analyze output..Here it is "Seq Scan on c_chkpfw_hr_tr a (cost=0.00..225975659.89 rows=11000 width=136) (actual time=2.345..648070.474 rows=22001 loops=1)" " Filter: (subplan)" " SubPlan" " -> Bitmap Heap Scan on chkpfw_tr_hr_dimension b (cost=1474.64..10271.13 rows=1 width=0) (actual time=29.439..29.439 rows=1 loops=22001)" " Recheck Cond: (($0 = firstoccurrence) AND ($1 = sentryid_id) AND ($2 = node_id))" " Filter: (($3 = customerid_id) AND (COALESCE($4, 0) = COALESCE(interface_id, 0)) AND (COALESCE($5, 0) = COALESCE(source_id, 0)) AND (COALESCE($6, 0) = COALESCE(destination_id, 0)) AND (COALESCE($7, 0) = COALESCE(sourceport_id, 0)) AND (COALESCE($8 (..)" " -> Bitmap Index Scan on chkpfw_tr_hr_idx1 (cost=0.00..1474.64 rows=38663 width=0) (actual time=12.144..12.144 rows=33026 loops=22001)" " Index Cond: (($0 = firstoccurrence) AND ($1 = sentryid_id) AND ($2 = node_id))" "Total runtime: 648097.800 ms" Regards Sriram -----Original Message----- From: Tom Lane [mailto:tgl@xxxxxxxxxxxxx] Sent: Monday, April 17, 2006 12:29 PM To: Sriram Dandapani Cc: Pgsql-Performance (E-mail) Subject: Re: [PERFORM] creating of temporary table takes very long "Sriram Dandapani" <sdandapani@xxxxxxxxxxxxxxx> writes: > [ query snipped ] > This takes forever (I have to cancel the statement each time) How long did you wait? > c_chkpfw_hr_tr has same indexes as chkpfw_tr_hr_dimension Which would be what exactly? What does EXPLAIN show for that SELECT? (I won't make you post EXPLAIN ANALYZE, if you haven't got the patience to let it finish, but you should at least provide EXPLAIN results.) regards, tom lane
