Simon Riggs <[email protected]> writes:
> On Sat, 2009-10-17 at 21:41 -0400, Tom Lane wrote:
>> one thing we'd have to consider
>> is whether it is okay to suppress calculation of columns containing
>> volatile functions.
> I think we should have a 4th class of functions,
> volatile-without-side-effects (better name needed, obviously).
What for? There wouldn't be that many, I think. random() and
clock_timestamp(), yeah, but most volatile user-defined functions
are either volatile-with-side-effects or misdeclared.
regards, tom lane
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