On Fri, Jan 24, 2020 at 11:12 AM Tom Lane <tgl@sss.pgh.pa.us> wrote:
> I happened to notice this comment in the logic in
> ATAddForeignKeyConstraint that tries to decide if it can skip
> revalidating a foreign-key constraint after a DDL change:
>
> * Since we require that all collations share the same notion of
> * equality (which they do, because texteq reduces to bitwise
> * equality), we don't compare collation here.
>
> Hasn't this been broken by the introduction of nondeterministic
> collations?
Similar words appear in the comment for ri_GenerateQualCollation().