> What Philip seems to be asking for is a mechanism where by if a function
> is marked as being mathematically deterministic (given a particular set of
> parameters the same result is always returned -- eg: cos(), sin(),
> etc) then the result is cached and next time the function is called with
> the same argument(s) the result is retrieved from the cache instead of the
> function being run again.
I was under the impression that the sin, cos, tan and like functions are
marked non-volatile in the system catalogs and so are evaluated once per
transaction only.
Chris
