Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> writes:
> "Do nothing" isn't the right phrase here --- it would take a great deal
> of work and ugly, hard-to-maintain code to get it to work even that badly.
> The code paths in transformColumnRef are fairly messy already :-(.
> Getting rid of add_missing_from would definitely make it easier to
> refactor to support hooks for external variable sources.
A little voice from the field, +1 for deprecating add_missing_from.
Regards,
--
dim