Re: DISTINCT ... ORDER BY
От | Nabil Sayegh |
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Тема | Re: DISTINCT ... ORDER BY |
Дата | |
Msg-id | 3FA95846.2020701@e-trolley.de обсуждение исходный текст |
Ответ на | Re: DISTINCT ... ORDER BY (Stephan Szabo <sszabo@megazone.bigpanda.com>) |
Ответы |
Re: DISTINCT ... ORDER BY
Re: DISTINCT ... ORDER BY |
Список | pgsql-novice |
Stephan Szabo wrote: > Your step 3 above isn't well defined in general. There's no single place > in the sort order for a value of a column being distincted when the value > occurs multiple times. In the data above, col1='b' occurs twice in the > sort order and you need to give an indication of which place in the sort > order you want to use. Ok, let's look for alternatives. Is it possible to add a serial column to my ordered result ? I hope there is a way to do it without temporary tables as I want to keep it all in 1 query. TFYH -- e-Trolley Sayegh & John, Nabil Sayegh Tel.: 0700 etrolley /// 0700 38765539 Fax.: +49 69 8299381-8 PGP : http://www.e-trolley.de
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