>>Making ALTER TABLE RENAME abort-safe requires changing the conventions >>for naming physical table files, and the details have been sufficiently >>controversial that it's not been done yet. In the meantime our only >>choices are to forbid ALTER TABLE RENAME within transaction blocks, or >>allow it with the knowledge that people can shoot themselves in the foot >>with it. The above warning notice is the current compromise. > > Is it going to be in 7.1? If not, it might be worth disabling in TX blocks > since a mistyped SQL query can cause an aborted transaction, something that > is somewhat counter-intuitive. Maybe the message should be expanded to say: Just couple days ago I've said that right now I implement new file naming because of this is required by WAL. As additional result ALTER TABLE RENAME will not rename files any more and so will be rollback-able. Please wait ~ 1 day -:) Vadim