Re: 4 way JOIN using aliases
От | Keith Worthington |
---|---|
Тема | Re: 4 way JOIN using aliases |
Дата | |
Msg-id | 20050412181234.M15392@narrowpathinc.com обсуждение исходный текст |
Ответ на | Re: 4 way JOIN using aliases ("Dave Held" <dave.held@arrayservicesgrp.com>) |
Список | pgsql-performance |
On Tue, 12 Apr 2005 08:41:55 -0500, Dave Held wrote > > -----Original Message----- > > From: Keith Worthington [mailto:KeithW@narrowpathinc.com] > > Sent: Monday, April 11, 2005 7:44 PM > > To: Neil Conway > > Cc: PostgreSQL Perform > > Subject: Re: [PERFORM] 4 way JOIN using aliases > > > > Neil Conway wrote: > > > Keith Worthington wrote: > > > > > >> -> Seq Scan on tbl_current > > (cost=0.00..1775.57 rows=76457 > > >> width=31) (actual time=22.870..25.024 rows=605 loops=1) > > > > > > > > > This rowcount is way off -- have you run ANALYZE recently? > > > [...] > > > > I run vacuumdb with the analyze option every morning via a > > cron job. In my ignorance I do not know if that is the same > > thing. > > Pass it an --analyze option if you aren't already. > > __ > David B. Held > Here is the command I have in the cron file. vacuumdb --full --analyze --verbose --username dbuser --dbname ${IPA_DB} >> ${IPA_LOG_DIR}/ipavcmdb.log 2>&1 If this performs the analyze as I thought it should I do not know why the row count is so badly off. Kind Regards, Keith
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