Re: Disallow unique index on system columns

On 2016-04-15 11:49:27 -0400, Tom Lane wrote:
> I think what we should do with this is split it into two patches, one
> to fix ALTER REPLICA IDENTITY's crash (which we'd back-patch to 9.4)
> and one to forbid indexes on system columns (which IMO should be HEAD
> only).  The first of those should be pretty uncontroversial, so I'll
> go ahead with pushing it --- anyone have a problem with the second?

Only in that I'm wondering whether we shouldn't be more aggressive about
#2.

Andres