Comments on: ANALYZE your PostgreSQL databases! http://langabi.name/blog/2006/03/10/analyze-your-postgresql-databases Paul Cook's blog Fri, 18 May 2012 18:51:27 +0000 http://wordpress.org/?v=2.6.2 By: diN0bot http://langabi.name/blog/2006/03/10/analyze-your-postgresql-databases#comment-16168 diN0bot Thu, 18 Jun 2009 00:53:01 +0000 http://langabi.name/blog/2006/03/10/analyze-your-postgresql-databases#comment-16168 Maybe the question is "where do you run ANALYZE". I first came upon ANALYZE after reading up on vacuum, which you can run from the command line as "vacuumdb -z " It took me a while to understand that ANALYZE and VACUUM ANALYZE are meant to be run from within the psql command line. I guess the all-caps is kind of a give-away, but the talk of cron-jobs confused me for a little bit. I kept looking for a command to run on the shell, rather than a command to run with psql. Hope that helps. Maybe the question is “where do you run ANALYZE”. I first came upon ANALYZE after reading up on vacuum, which you can run from the command line as “vacuumdb -z ”

It took me a while to understand that ANALYZE and VACUUM ANALYZE are meant to be run from within the psql command line. I guess the all-caps is kind of a give-away, but the talk of cron-jobs confused me for a little bit. I kept looking for a command to run on the shell, rather than a command to run with psql.

Hope that helps.

]]> By: paulcook http://langabi.name/blog/2006/03/10/analyze-your-postgresql-databases#comment-9486 paulcook Mon, 01 Oct 2007 00:34:49 +0000 http://langabi.name/blog/2006/03/10/analyze-your-postgresql-databases#comment-9486 Yeah, I'm really not sure how to be more precise, step 3 pretty much says it all: you run the query "ANALYZE". Alternatively, you can run "VACUUM ANALYZE", which cleans up deleted records as well, as a regular nightly cron job. Details in the PostgreSQL docs, eg. http://www.postgresql.org/docs/8.2/interactive/sql-analyze.html But if none of this means anything to you, you have a lot of reading to do :) Yeah, I’m really not sure how to be more precise, step 3 pretty much says it all: you run the query “ANALYZE”. Alternatively, you can run “VACUUM ANALYZE”, which cleans up deleted records as well, as a regular nightly cron job.

Details in the PostgreSQL docs, eg. http://www.postgresql.org/docs/8.2/interactive/sql-analyze.html

But if none of this means anything to you, you have a lot of reading to do :)

]]> By: Mark http://langabi.name/blog/2006/03/10/analyze-your-postgresql-databases#comment-9485 Mark Sat, 29 Sep 2007 05:37:38 +0000 http://langabi.name/blog/2006/03/10/analyze-your-postgresql-databases#comment-9485 Can you go into detail how to do a full analyze on all tables in a database? Maybe that info easily available, but your's was one of the first posts that came up in google, so would be a good plus to have that info here. THanks. Can you go into detail how to do a full analyze on all tables in a database? Maybe that info easily available, but your’s was one of the first posts that came up in google, so would be a good plus to have that info here.

THanks.

]]> By: DbRunas.com.ar - ANALYZE your PostgreSQL databases! http://langabi.name/blog/2006/03/10/analyze-your-postgresql-databases#comment-1065 DbRunas.com.ar - ANALYZE your PostgreSQL databases! Wed, 15 Mar 2006 19:53:08 +0000 http://langabi.name/blog/2006/03/10/analyze-your-postgresql-databases#comment-1065 [...] some information with every combination of records from tables A and B. Complete story: http://langabi.name/blog/2006/03/10/analyze-your-postgresql-databases:: : [...] [...] some information with every combination of records from tables A and B.

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