Re: non-recursive WITH clause support
От | David Fetter |
---|---|
Тема | Re: non-recursive WITH clause support |
Дата | |
Msg-id | 20070410011025.GJ27243@fetter.org обсуждение исходный текст |
Ответ на | Re: non-recursive WITH clause support (Tom Lane <tgl@sss.pgh.pa.us>) |
Список | pgsql-patches |
On Mon, Apr 09, 2007 at 09:08:31PM -0400, Tom Lane wrote: > David Fetter <david@fetter.org> writes: > > On Mon, Apr 09, 2007 at 06:43:08PM -0400, Tom Lane wrote: > >> So this does not really add any new functionality, it's just variant > >> syntax for something you can do about as easily without it, right? > > > Not totally as easily. For example, you can do some kinds of > > aggregation with a few fewer keystrokes. > > Example please? It's not obvious to me what this does that wouldn't be > exactly isomorphic to creating a temporary view. It would be isomorphic, but happens automagically for the scope of the query instead of being three queries. Cheers, D -- David Fetter <david@fetter.org> http://fetter.org/ phone: +1 415 235 3778 AIM: dfetter666 Skype: davidfetter Remember to vote! Consider donating to PostgreSQL: http://www.postgresql.org/about/donate
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