On 4/14/2010 9:20 AM, Satish Burnwal (sburnwal) wrote:
Index Scan using repcopy_index on repcopy a (cost=0.00..87824607.17
rows=28 width=142) (actual time=11773.105..689111.440 rows=1 loops=1) Index Cond: ((dm_user)::text = 'u3'::text) Filter: ((report_status = 0) AND (report_time = (subplan))) SubPlan -> Aggregate (cost=3531.30..3531.31 rows=1 width=8) (actual
time=58.447..58.448 rows=1 loops=11788) -> Index Scan using repcopy_index on repcopy b
(cost=0.00..3526.30 rows=2000 width=8) (actual time=0.017..36.779
rows=25842 loops=11788) Index Cond: ((($0)::text = (dm_user)::text) AND
(($1)::text = (dm_ip)::text)) Filter: ((ss_key)::text <> ''::text)Total runtime: 689111.511 ms
(9 rows)
The estimated cost and actual are way off. Have you run Analyze on the table
you may want to change the statistics collected for this table
http://www.postgresql.org/docs/8.1/static/planner-stats.html ALTER [ COLUMN ] column SET STATISTICS integer
http://www.postgresql.org/docs/8.1/static/sql-altertable.html
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