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
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