On 2017-01-17 13:43:38 -0500, Tom Lane wrote: > Although ... looking closer at Andres' patch, the new node type *is* > channeling Result, in the sense that it might or might not have any input > plan. This probably traces to what I wrote in September: > > + * XXX Possibly-temporary hack: if the subpath is a dummy ResultPath, > + * don't bother with it, just make a Result with no input. This avoids > an > + * extra Result plan node when doing "SELECT srf()". Depending on what > we > + * decide about the desired plan structure for SRF-expanding nodes, this > + * optimization might have to go away, and in any case it'll probably > look > + * a good bit different. > > I'm not convinced that that optimization is worth preserving, but if we > keep it then ProjectSet isn't le mot juste here, any more than you'd want > to rename Result to Project without changing its existing > functionality.
Right. I'd removed that, and re-added it; primarily because the plans looked more complex without it. After all, you'd thought it worth adding that hack ;) I'm happy with removing it again too. Andres -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
