Re: Numbering rows
От | A. Kretschmer |
---|---|
Тема | Re: Numbering rows |
Дата | |
Msg-id | 20081016052120.GA25000@a-kretschmer.de обсуждение исходный текст |
Ответ на | Re: Numbering rows ("Richard Broersma" <richard.broersma@gmail.com>) |
Ответы |
Re: Numbering rows
Re: Numbering rows |
Список | pgsql-general |
am Wed, dem 15.10.2008, um 12:23:42 -0700 mailte Richard Broersma folgendes: > On Wed, Oct 15, 2008 at 12:08 PM, ries van Twisk <pg@rvt.dds.nl> wrote: > > May be this function can help : > > > > http://www.postgresql.org/docs/8.3/static/functions-srf.html > > Using generate series won't number the rows that way that you would > want. You basically will end up with a cross join between the > generated series and the requested set. There are three ways that I > know of to get a row number: > > 1) IIRC use a pl-pgsql function that returns an incremented number > 2) use SQL by joining using the operator ">=" and Group by aggregate count(*) > 3) 8.4 has sum new analytic functions that will do this nicely. Can you show an example for 8.4? Andreas -- Andreas Kretschmer Kontakt: Heynitz: 035242/47150, D1: 0160/7141639 (mehr: -> Header) GnuPG-ID: 0x3FFF606C, privat 0x7F4584DA http://wwwkeys.de.pgp.net
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