Re: AW: [HACKERS] Another nasty cache problem
От | Hannu Krosing |
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Тема | Re: AW: [HACKERS] Another nasty cache problem |
Дата | |
Msg-id | 38A28EF4.70E998A9@tm.ee обсуждение исходный текст |
Ответ на | AW: [HACKERS] Another nasty cache problem (Zeugswetter Andreas SB <ZeugswetterA@wien.spardat.at>) |
Список | pgsql-hackers |
Zeugswetter Andreas SB wrote: > > > Chris Bitmead <chrisb@nimrod.itg.telstra.com.au> writes: > > > What about portals? Doesn't psql use portals? > > > > No ... portals are a backend concept ... > > > > I think the previous frontend "monitor" did use a portal for the > selects. The so called "blank portal". Is'nt the "blank portal" the name of the cursor you get when you just do a select without creating a cursor ? > I don't really see any advantage, that psql does not do a fetch loop > with a portal. It only increases traffic, as explicit fetch commands need to be sent to backend. If one does not declare a cursor, an implicit fetch all from blank is performed. > Is it possible in psql do do any "fetch" stuff, after doing a > select * from table ? only if in a declared cursor, and you can only declare cursor if in a transaction. --------------- Hannu
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