Bruce Momjian <pgman@candle.pha.pa.us> writes:
> One idea is for SET to return a command tag that has more information,
> like we do for INSERT/UPDATE/DELETE. It could return the variable
> modified and the new value.
But that doesn't solve the problem --- what about begin, set, rollback?
What about absorbing a new value for a variable while re-reading
postgresql.conf due to SIGHUP?
Unless you want to effectively disable all of the nice GUC behavior
we've developed, I think you have to have a reporting mechanism that's
separate from command completion.
> Also, are we removing the behavior that SET _doesn't_ start a
> transaction in autocommit off mode?
If we remove autocommit-off mode, it stops being an issue ;-)
regards, tom lane