* Alvaro Herrera <[EMAIL PROTECTED]> wrote: > On Thu, Mar 24, 2005 at 02:32:48PM +0100, Enrico Weigelt wrote: > > > BTW: is it possible to explicitly clear the cache for immutable > > functions ? > > What cache? There is no caching of function results.
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Not ? So what's immutable for ? <snip> > > I'd like to use immutable functions for really often lookups like > > fetching a username by uid and vice versa. The queried tables > > change very rarely, but when they change is quite unpredictable. > > Maybe you should use a stable function if you fear we'll having function > result caching without you noticing. hmm, this makes more real evaluations necessary than w/ immuatable. AFAIK stable functions have to be evaluated once per query, and the results are not cached between several queries. cu -- --------------------------------------------------------------------- Enrico Weigelt == metux IT service phone: +49 36207 519931 www: http://www.metux.de/ fax: +49 36207 519932 email: [EMAIL PROTECTED] cellphone: +49 174 7066481 --------------------------------------------------------------------- -- DSL ab 0 Euro. -- statische IP -- UUCP -- Hosting -- Webshops -- --------------------------------------------------------------------- ---------------------------(end of broadcast)--------------------------- TIP 6: Have you searched our list archives? http://archives.postgresql.org
