Re: Query performance issue
От | Jayadevan |
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Тема | Re: Query performance issue |
Дата | |
Msg-id | 1315159591749-4768047.post@n5.nabble.com обсуждение исходный текст |
Ответ на | Re: Query performance issue (Tom Lane <tgl@sss.pgh.pa.us>) |
Ответы |
Re: Query performance issue
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Список | pgsql-performance |
I don't think I understood all that. Anyway, is there a way to fix this - either by rewriting the query or by creating an index? The output does match what I am expecting. It does take more than 10 times the time taken by Oracle for the same result, with PostgreSQL taking more than 20 minutes. I am sort of stuck on this since this query does get executed often. By the way, changing the filter from FAMNAM to GIVENNAME fetches results in 90 seconds. Probably there is a difference in the cardinality of values in these 2 columns. -- View this message in context: http://postgresql.1045698.n5.nabble.com/Query-performance-issue-tp4753453p4768047.html Sent from the PostgreSQL - performance mailing list archive at Nabble.com.
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