On Tue, Oct 03, 2023 at 09:08:49AM +0200, Dominique Devienne wrote:
> In my case, it's OK not to be transactional, for these experiments. Is
> there a way
> to lock the table and do the rewriting w/o generating any WAL? I don't have
> any experience
> with unlogged tables, but should I take an exclusive lock on the table,
> switch it to unlogged,
> rewrite, and switch it back to logged?
Switching a table back to be logged requires all its 8k blocks to be
WAL-logged, so that would be roughly the same as a plain UPDATE.
--
Michael
