Re: Question about the WITH RECURSIVE patch
От | Thomas Kellerer |
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Тема | Re: Question about the WITH RECURSIVE patch |
Дата | |
Msg-id | gg4m7h$tij$1@ger.gmane.org обсуждение исходный текст |
Ответ на | Re: Question about the WITH RECURSIVE patch (Tom Lane <tgl@sss.pgh.pa.us>) |
Ответы |
Re: Question about the WITH RECURSIVE patch
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Список | pgsql-general |
Tom Lane wrote on 20.11.2008 22:21: > "Josh Harrison" <joshques@gmail.com> writes: >> My question is when I don't use the Recursive term does the optimizer just >> consider it as a subquery or does it work like Oracle's WITH CLAUSE >> (Subquery Factoring) ? Oracle's WITH CLAUSE boosts the performance of the >> queries. So does this do the same? > > See the fine manual, for instance last para here: > http://developer.postgresql.org/pgdocs/postgres/queries-with.html > Cool :) From http://umitanuki.net/pgsql/wfv08/design.html I got the impression that windowing functions will make into (at least partially) into 8.4 because on that page several items are marked with [DONE]. I can't see anything in the developer docs regarding them. Does that mean they won't make it or that simply the documentation isnt't yet there? Cheers Thomas
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