Re: [HACKERS] Current sources?

Bruce Momjian wrote:

> > The second option (your earlier suggestion) seems to be necessary and sufficient. The junk filter (and
> > jf_cleanTupType) will always exist, for SELECT statements, as long as the following is not a legal statement:
> >
> > SELECT FROM foo GROUP BY bar;
> >
> > Currently the parser will not accept it. Sufficient.
> >
> > The first option will set tupType, for non-SELECT statements, to something it otherwise may not have been.
> > I would rather not risk effecting those calling routines which are not executing a SELECT command. At this
> > time, I do not understand them enough, and I see no benefit. Necessary?
>
> OK, I will leave it alone. Is there a way to use junk filters only in
> cases where we need them?

I have not YET come up with a clean method for detection of the a resjunk flag being set, on some resdom in the
tatget list, by a GROUP/ORDER BY. I will give it another look. It does seem a bit heavy handed to construct the
filter unconditionally on all SELECTS.