Re: Seqscan slowness and stored procedures
| От | Pavel Stehule |
|---|---|
| Тема | Re: Seqscan slowness and stored procedures |
| Дата | |
| Msg-id | CAFj8pRCnJC2oStrgy=w-4o3qtiQ5P6nBnBE=g4rTAngPjPMjxA@mail.gmail.com обсуждение исходный текст |
| Ответ на | Re: Seqscan slowness and stored procedures (Ivan Voras <ivoras@freebsd.org>) |
| Список | pgsql-performance |
2012/5/27 Ivan Voras <ivoras@freebsd.org>: > On 27 May 2012 05:28, Pavel Stehule <pavel.stehule@gmail.com> wrote: >> Hello >> >> 2012/5/26 Ivan Voras <ivoras@freebsd.org>: >>> Hello, >>> >>> I have a SQL function (which I've pasted below) and while testing its >>> code directly (outside a function), this is the "normal", default plan: >>> >>> http://explain.depesz.com/s/vfP (67 ms) >>> >>> and this is the plain with enable_seqscan turned off: >>> >>> http://explain.depesz.com/s/EFP (27 ms) >>> >>> Disabling seqscan results in almost 2.5x faster execution. >>> >>> However, when this code is wrapped in a function, the execution time is >>> closer to the second case (which is great, I'm not complaining): >>> >> >> see http://archives.postgresql.org/pgsql-general/2009-12/msg01189.php > > Hi, > > Thank you for your answer, but if you read my post, you'll hopefully > realize my questions are different from that in the linked post, and > are not answered by the post. yes, sorry, Pavel
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