> "Donald Fraser" writes:
>> Is the returned value of a function defined as IMMUTABLE cached =
>> globally?
"Tom Lane" writes:
> No, in fact it isn't cached at all. IMMUTABLE tells the planner that
> it's OK to fold a function call with constant inputs to a constant
> result value at plan time. Nothing more.
Ok I'm sort of clutching at straws here...
What about this scenario: I'm aware that sql statements within PL/pgSQL
functions get cached. Therefore if the query planner can fold a function with a
constant result, could that query plan get cached by PL/pgSQL with a folded
value?
Regards
Donald Fraser