Re: [HACKERS] patch: function xmltable

Hi,

> > > I'll try to explain my motivation. Please, check it and correct me if I
> > am
> > > wrong. I don't keep on my implementation - just try to implement XMLTABLE
> > > be consistent with another behave and be used all time without any
> > > surprise.
> > >
> > > 1. Any function that produces a content can be used in target list. We
> > > support SRF in target list and in FROM part. Why XMLTABLE should be a
> > > exception?
> >
> > targetlist SRFs were a big mistake. They cause a fair number of problems
> > code-wise. They permeated for a long while into bits of both planner and
> > executor, where they really shouldn't belong. Even after the recent
> > changes there's a fair amount of uglyness associated with them.  We
> > can't remove tSRFs for backward compatibility reasons, but that's not
> > true for XMLTABLE
> >
> >
> >
> ok
> 
> I afraid when I cannot to reuse a SRF infrastructure, I have to reimplement
> it partially :( - mainly for usage in "ROWS FROM ()"

Huh?

Greetings,

Andres Freund