Re: ALTER TABLE ... NOREWRITE option

Josh Berkus <josh@agliodbs.com> writes:
>> EXPLAIN ALTER TABLE would be the next step I guess. I discovered plenty
>> of magic tricks when working on the rewriting support for that command,
>> and I think exposing them in the EXPLAIN output would go a long way
>> towards reducing some POLA violations.

> I think this would be cool on its own merits.

> However, for a very large user group -- users with ORMs which do their
> own DDL migrations -- we could also use a way to log or WARN for table
> rewrites.  Since the ORMs are not gonna do an EXPLAIN.

An ORM is also quite unlikely to pay attention to a warning, much less a
postmaster log entry ... so your argument seems unfounded from here.
        regards, tom lane