Re: View vs. direct Table access
От | Darren Ferguson |
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Тема | Re: View vs. direct Table access |
Дата | |
Msg-id | Pine.LNX.4.10.10203271014330.30115-100000@thread.crystalballinc.com обсуждение исходный текст |
Ответ на | Re: View vs. direct Table access ("Marin Dimitrov" <marin.dimitrov@sirma.bg>) |
Ответы |
Re: View vs. direct Table access
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Список | pgsql-general |
I am not to sure about Postgres. I just quoted the SQL standard on views. Although judging from the ones i use and there relative slow speed i do not think Postgres caches them in any way Please Correct me if i am wrong Thanks Darren Ferguson On Wed, 27 Mar 2002, Marin Dimitrov wrote: > > ----- Original Message ----- > From: "Darren Ferguson" > > > > The reason the view is slower is because it has to be created first before > > you can select from it. > > > > I.e. every time you select from the view it will have to run the view sql > > before it can select from it > > > > could u clarify this? shouldn't some kind of dictionary cache be employed? > > this reminds me another issue I couldn't find explained in the docs - does > Postgres have some kind of library cache for sharing/reuse of SQL > statements, pl/pgsql functions, etc? > > it seems that there is only buffer cache at present > > thanx, > > Marin > > > ---- > "...what you brought from your past, is of no use in your present. When > you must choose a new path, do not bring old experiences with you. > Those who strike out afresh, but who attempt to retain a little of the > old life, end up torn apart by their own memories. " > > > > > ---------------------------(end of broadcast)--------------------------- > TIP 5: Have you checked our extensive FAQ? > > http://www.postgresql.org/users-lounge/docs/faq.html >
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