Re: [HACKERS] What about LIMIT in SELECT ?
От | Bruce Momjian |
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Тема | Re: [HACKERS] What about LIMIT in SELECT ? |
Дата | |
Msg-id | 199810132105.RAA10598@candle.pha.pa.us обсуждение исходный текст |
Ответ на | Re: [HACKERS] What about LIMIT in SELECT ? (Terry Mackintosh <terry@terrym.com>) |
Ответы |
Re: [HACKERS] What about LIMIT in SELECT ?
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Список | pgsql-hackers |
> Hi, my 2 cents... > > I agree completely, LIMIT would be VERY usefull in web based apps, which > is all I run. It does not matter to me if it is not part of a formal > standard. The idea is so common that it is a defacto standard. > > I would not expect it for this release, but could it get put on the TODO > list for next time? I am even willing to work at an apprentise level on > this with a more expeireanced person that knows this stuff. I assume everyone has read the FAQ item: How do I <I>select</I> only the first few rows of a query? See the fetch manual page.<P> This only prevents all row results from being transfered to the client. The entire query must be evaluated, even if you only want just the first few rows. Consider a query that has an order by. There is no way to return any rows until the entire query is evaluated and sorted. -- Bruce Momjian | http://www.op.net/~candle maillist@candle.pha.pa.us | (610) 853-3000 + If your life is a hard drive, | 830 Blythe Avenue + Christ can be your backup. | Drexel Hill, Pennsylvania 19026
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