"Paul Mackay" <mackaypaul(at)gmail(dot)com> writes:
> I understand that the query plan of a function is determined at
> CREATION and remains the same whatever the parameter(s) value. I
> suppose then that this plan is stored somewhere in a system table ?
You are misinformed. It's determined the first time that function is
executed in a given backend, and stored in backend-local memory.
There's no way that I know of to look at it.
-Doug