Re: clear function cache (WAS: SQL function inlining)

* Alvaro Herrera <alvherre@dcc.uchile.cl> 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.

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:     contact@metux.de
  cellphone: +49 174 7066481
---------------------------------------------------------------------
 -- DSL ab 0 Euro. -- statische IP -- UUCP -- Hosting -- Webshops --
---------------------------------------------------------------------