Re: Select * is very slow
От | Kevin Grittner |
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Тема | Re: Select * is very slow |
Дата | |
Msg-id | 4CD7D89A02000025000373D8@gw.wicourts.gov обсуждение исходный текст |
Ответ на | Select * is very slow ("shaiju.ck" <shaiju.ck@gmail.com>) |
Ответы |
Re: Select * is very slow
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Список | pgsql-performance |
"shaiju.ck" <shaiju.ck@gmail.com> wrote: > The table have 200 records now. > Select * from employee takes 15 seconds to fetch the data!!! > Which seems to be very slow. > But when I say select id,name from empoyee it executes in 30ms. > Same pefromance if I say select count(*) from emloyee. You haven't given nearly enough information for anyone to diagnose the issues with any certainty. Earlier responses have asked for some particularly important information, and I would add a request to see the output from `VACUUM VERBOSE employee;`. Beyond that, you might want to review this page for checks you can make yourself, and information which you could provide to allow people to give more informed advice: http://wiki.postgresql.org/wiki/SlowQueryQuestions -Kevin
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