On 05/25/2016 03:32 AM, Tom Lane wrote:
Andreas Karlsson <andr...@proxel.se> writes:
On 05/25/2016 02:41 AM, Robert Haas wrote:
I'd rather extend see us ALTER AGGREGATE to do this.

Wouldn't that prevent this from going into 9.6? I do not think changing
ALTER AGGREGATE is 9.6 materials.

Well, it's debatable --- but if the patch to do it is small and the
alternatives are really ugly, that would be an acceptable choice IMO.
Certainly we'd want to add that capability eventually anyway.

Looked at this quickly and I do not think adding it would be what I consider a small patch since we would essentially need to copy the validation logic from DefineAggregate and AggregateCreate and modify it to fit the alter case. I am leaning towards either either leaving the aggregate functions alone or updating the catalog manually.


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