Re: Disallow unique index on system columns

David Rowley <david.rowley@2ndquadrant.com> writes:
> On 15 April 2016 at 13:43, David Rowley <david.rowley@2ndquadrant.com> wrote:
>> The attached patch just disallows any index containing a system
>> column, apart from OID.
> Seems I only did half the job as I forgot to think to check for system
> columns that are hidden away inside expressions or predicates.
> The attached fixes that.

Pushed.  I moved the check into DefineIndex, as that's where user-facing
complaints about indexes generally ought to be.
        regards, tom lane