Re: returned row number
От | Bruno Wolff III |
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Тема | Re: returned row number |
Дата | |
Msg-id | 20050506210016.GB11254@wolff.to обсуждение исходный текст |
Ответ на | returned row number ("Keith Worthington" <keithw@narrowpathinc.com>) |
Ответы |
Re: returned row number
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Список | pgsql-novice |
On Fri, May 06, 2005 at 15:45:02 -0400, Keith Worthington <keithw@narrowpathinc.com> wrote: > Hi All, > > I have a quick question. Is there a simple way to access the returned record > number? > > I want to be able to do something like > > SELECT record AS record_no, > column1, > column2 > FROM table1 > WHERE column2 < 100 > ORDER BY column1; > > record_no | column1 | column2 > ----------+---------+--------- > 1 | A | 1.75 > 2 | F | 93 > 3 | M | 12.5 > 4 | N | 0 > 5 | Q | 57.6 Normally the best thing to do is have the application count. You can use a subquery to get the counts, but it will be a lot slower. You could also write a set returning function to do this.
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