Re: New warning code for missing FROM relations

Bruce Momjian <pgman@candle.pha.pa.us> writes:
> I have committed new warning code to alert users who auto-create
> relations without knowing it.
> The code issues the warning if it auto-creates a range table entry, and
> there is already a range table entry identified as coming from a FROM
> clause.  Correlated subqueries should not be a problem because they are
> not auto-created.

I still prefer the suggestion I made before: complain only if the
implicit FROM entry is for a table already present in the rangelist
(under a different alias, obviously).  The fact that that choice
would not break any existing regression tests seems relevant...
        regards, tom lane