Le lundi 19 juillet 2010, à 17:09:02 +0100, Sam a écrit : > On Mon, Jul 19, 2010 at 05:55:48PM +0200, arno wrote: > > But when using a custom function to compute my where parameter > > > inet_to_bigint is a function that transform an inet address its integer representation. > > > Is there a way, either to put function return value in a variable, or to tell > > postgres to still use a sequential scan ? > > I'd guess your function is labeled as "VOLATILE". This is saying that > the function has "side effects", but from the function's name I'd guess > that it doesn't and the only purpose of calling the function is to get > its return value. I'd expect that labeling it as STABLE would cause PG > to do what you're expecting. More details here: > > http://www.postgresql.org/docs/current/static/xfunc-volatility.html Thanks, that's exactly what I was looking for.
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