Re: Add RESPECT/IGNORE NULLS and FROM FIRST/LAST options

Tatsuo Ishii <ishii@postgresql.org> writes:
>> I would think that
>> IGNORE NULLS is potentially useful for user-defined window functions,
>> and we should not be building anything that restricts the feature to
>> specific functions.

> So you want to allow to use IGNORE NULLS to other built-in window
> functions?

No, there needs to be a way for the individual window function to
throw error if that's specified for a function that can't handle it.
I'm just saying I don't want that to be hard-wired in some centralized
spot.

            regards, tom lane