RE: [GENERAL] slow queries
От | Howie |
---|---|
Тема | RE: [GENERAL] slow queries |
Дата | |
Msg-id | Pine.LNX.3.96.980927031104.27550C-100000@brap-eth0.toodarkpark.org обсуждение исходный текст |
Ответ на | RE: [GENERAL] slow queries ("Jackson, DeJuan" <djackson@cpsgroup.com>) |
Список | pgsql-general |
On Fri, 25 Sep 1998, Jackson, DeJuan wrote: > > seems that by creating a view ( with the query i mentioned before ), > > my > > queries were sped up by roughly 10 seconds... odd odd odd. > > > Not really so odd when you think of everything the backend has to do to > process a query. Parsing, planning, and optimizing (not necessarily in > that order) can be very costly. A view basically skips most of those > three steps. all thats taken out is the parsing bit. the planning and optimizing still must be done ( unless its done when the view is/was created ), yesno ? the view should still hit the indexes created for the underlying tables, right ? --- Howie <caffeine@toodarkpark.org> URL: http://www.toodarkpark.org "Oh my god, they killed init! YOU BASTARDS!"
В списке pgsql-general по дате отправления: