Re: Need help with understanding the explain analyze query plan
От | David G Johnston |
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Тема | Re: Need help with understanding the explain analyze query plan |
Дата | |
Msg-id | 1414617718379-5824949.post@n5.nabble.com обсуждение исходный текст |
Ответ на | Need help with understanding the explain analyze query plan (Shubhra Sharma <sharma.shubhra07@gmail.com>) |
Список | pgsql-novice |
ssharma wrote > "Total runtime: 76.051 ms" > ====================== > > I don't understand how to read the output. I don't understand why you would want to... There is considerable material on the internet about how to read plans, including the documentation. You're not that likely to get someone to try teaching you about EXPLAIN using the query you've shown but if you show you've done some reading and ask somewhat more specific questions you will find people willing to help fill in the gaps. Typically you would start with a query that is performing poorly and at first glance 76ms doesn't seem bad enough to warrant any effort trying to understand how the planner is fulfilling your query. Though, to make reading plans easier you should consider using this site: http://explain.depesz.com/ I'd suggest copying your explain output there, taking some time to review it and do some reading (on that site, in the documentation, and elsewhere), and then come back and ask some specific questions. David J. -- View this message in context: http://postgresql.1045698.n5.nabble.com/Need-help-with-understanding-the-explain-analyze-query-plan-tp5824939p5824949.html Sent from the PostgreSQL - novice mailing list archive at Nabble.com.
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