On Tue, 29 Mar 2022 at 16:04, James Coleman <jtc...@gmail.com> wrote: > > Back in 367bc42 (for 9.2!) we "avoid[ed] index rebuild[ing] for > no-rewrite ALTER TABLE > .. ALTER TYPE." However the docs still claim that "a table rewrite is > not needed; but any indexes on the affected columns must still be > rebuilt."
Although indexes might indeed not need a rebuild, in many cases they still do (e.g. when the type changes between text and a domain of text with a different collation). I think that the current state of the docs is better in that regard; as it explicitly warns for index rebuilds, even when the letter of the docs is incorrect: there are indeed cases we don't need to rebuild the indexes; but that would require more elaboration. Kind regards, Matthias van de Meent
