On Tue, Jan 11, 2022 at 11:54 AM Tom Lane <tgl@sss.pgh.pa.us> wrote:
> Pass NULL for that, per 6867f963e:
>
> https://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=6867f963e#patch2
Will look into that.
> We'd have to back-patch that bit, but I don't see any problem
> with doing so.
But the back-patch fix will make index_unchanged_by_update return true
unconditionally (to avoid an ABI break). It won't actually do anything
with Vars, which, as I said, seems okay given the current way in which
we apply the hint.
--
Peter Geoghegan
