Alvaro Herrera <alvhe...@2ndquadrant.com> writes: > Still, it's an inconsistency in pg11. I vote -0 to getting it > backpatched, mostly because it seems like more work than is warranted. > (I think the work consists not only of testing that the backpatched > commit works correctly, but also documenting for 11.4 release notes how > to fix existing catalogs after upgrading.)
Yeah, I agree. Even if we back-patched a code change, nothing could rely on relhassubclass for this purpose in a v11 database, because of not knowing whether the user actually bothered to manually update pre-existing indexes' entries. Better to know that it doesn't work than to be unsure if it does. regards, tom lane