Neil Conway <neilc@samurai.com> writes:
> Well, my previous message described why I'm not sure that this line of
> reasoning is correct. I think the only really proper configuration is
> add_missing_from=false and an explicit USING/FROM list. Just about the
> only reason to enable add_missing_from would be for compatibility with
> previous releases of PostgreSQL -- and that "compatible" behavior is not
> to issue a warning for UPDATE and DELETE in this situation.
Hmm. There's some merit in that position, but consider this: we are
encouraging people rather strongly to move to the add_missing_from=false
behavior. So add_missing_from=true could be seen as a testing situation
in which you'd like to know which of your queries have a problem, while
not actually causing your app to fail. Strict backwards compatibility
won't produce the warning but also won't help you find what will break.
regards, tom lane