I ran VACUUM FULL ANALYZE yesterday and the re-ran the query with
EXPLAIN ANALYZE.
I got the same query plan and execution time.
-----Original Message-----
From: Tom Lane [mailto:tgl@sss.pgh.pa.us]
Sent: Wednesday, October 01, 2003 4:20 PM
To: Oleg Lebedev
Cc: Josh Berkus; scott.marlowe; pgsql-performance@postgresql.org
Subject: Re: [PERFORM] TPC-R benchmarks
Oleg Lebedev <oleg.lebedev@waterford.org> writes:
> All right, my query just finished running with EXPLAIN ANALYZE. I show
> the plan below and also attached it as a file. Any ideas?
Uh, have you done an ANALYZE (or VACUUM ANALYZE) on this database? It
sure looks like the planner thinks the tables are a couple of orders of
magnitude smaller than they actually are. Certainly the estimated sizes
of the joins are way off :-(
If you did analyze, it might help to increase the statistics target and
re-analyze.
regards, tom lane
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