| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Konstantin Knizhnik <k(dot)knizhnik(at)postgrespro(dot)ru> |
| Cc: | PostgreSQL Hackers <pgsql-hackers(at)postgresql(dot)org>, David Rowley <david(dot)rowley(at)2ndquadrant(dot)com>, Alexander Korotkov <a(dot)korotkov(at)postgrespro(dot)ru> |
| Subject: | Re: Optimizer questions |
| Date: | 2016-03-09 06:15:20 |
| Message-ID: | 1393.1457504120@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
I wrote:
> BTW, there's some additional refactoring I had had in mind to do in
> grouping_planner to make its handling of the targetlist a bit more
> organized; in particular, I'd like to see it using PathTarget
> representation more consistently throughout the post-scan-join steps.
See 51c0f63e4d76a86b44e87876a6addcfffb01ec28 --- I think this gets
things to where we could plug in additional levels of targets without
too much complication.
regards, tom lane
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