David Fetter <da...@fetter.org> writes:
> It occurs to me that we ought to allow for a possibility that a
> function can be more than one special case. For example, sum() is
> both an aggregate and a windowing function, while rank() is only a
> windowing function.
If it makes the display even one character wider, -1 from me.
That's a purely hypothetical problem for the classification
we're discussing. (No, I don't feel a need for \df to remind
me every time that aggregates can also be window functions.)
regards, tom lane
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