Re: Question about the WITH RECURSIVE patch
От | Bruce Momjian |
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Тема | Re: Question about the WITH RECURSIVE patch |
Дата | |
Msg-id | 200811202156.mAKLucQ28391@momjian.us обсуждение исходный текст |
Ответ на | Re: Question about the WITH RECURSIVE patch (Thomas Kellerer <spam_eater@gmx.net>) |
Ответы |
Re: Question about the WITH RECURSIVE patch
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Список | pgsql-general |
Thomas Kellerer wrote: > 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? The patch is still being reviewed for inclusion in 8.4. -- Bruce Momjian <bruce@momjian.us> http://momjian.us EnterpriseDB http://enterprisedb.com + If your life is a hard drive, Christ can be your backup. +
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