Ответ: [BUGS] reproducable command sequence to get "mdopen: Couldn't open..."

	>>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