Re: name search query speed
От | Dave Held |
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Тема | Re: name search query speed |
Дата | |
Msg-id | 49E94D0CFCD4DB43AFBA928DDD20C8F90261845D@asg002.asg.local обсуждение исходный текст |
Ответ на | name search query speed (Jeremiah Jahn <jeremiah@cs.earlham.edu>) |
Ответы |
Re: name search query speed
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Список | pgsql-performance |
> -----Original Message----- > From: Jeremiah Jahn [mailto:jeremiah@cs.earlham.edu] > Sent: Thursday, March 03, 2005 2:15 PM > To: John A Meinel > Cc: postgres performance > Subject: Re: [PERFORM] name search query speed > > [...] > So the count for this is generated on the fly needed for > pagination in the app which expresses the total number of > finds, but only displays 40 of them. If any one knows a way > to determine the total number of matches without needing to > iterate through them using jdbc, I'm all ears as this would > save me huge amounts of time and limit/offset would become > an option. Is there a reason you can't do a count(field) query first? If so, you can get the number of records returned by setting absolute(-1) and getting the row number. __ David B. Held Software Engineer/Array Services Group 200 14th Ave. East, Sartell, MN 56377 320.534.3637 320.253.7800 800.752.8129
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