On Sat, Apr 10, 2010 at 4:47 PM, Ben Chobot <bench@silentmedia.com> wrote:
> My understanding is that this generally happens because the plan should be different for the different values, but
thefirst time the function is run it caches the plan for one of the values and will never use the appropriate plan for
thesecond value.
No, it plans based on a sort of "generic value", not the first one you
supply. The way to get at that plan is:
PREPARE foo AS <query>;
EXPLAIN EXECUTE foo (parameters);
...Robert
