Kohei KaiGai <kaigai@kaigai.gr.jp> writes:
> About ALTER FUNCTION towards aggregate function, why we should raise
> an error strictly?
I agree we probably shouldn't --- traditionally we have allowed that,
AFAIR, so changing it would break existing applications for little
benefit.
Similarly, you should not be throwing error when ALTER TABLE is applied
to a view, sequence, etc, and the command would otherwise be sensible.
regards, tom lane