| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | David Rowley <david(dot)rowley(at)2ndquadrant(dot)com> |
| Cc: | PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com> |
| Subject: | Re: Performance issue in foreign-key-aware join estimation |
| Date: | 2019-02-21 02:00:33 |
| Message-ID: | 7767.1550714433@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
David Rowley <david(dot)rowley(at)2ndquadrant(dot)com> writes:
> Attaching the original patch again so the commitfest bot gets off my
> back about the other one not applying.
Pushed that one. I'm interested by the "POC" patch, but I agree
that it'd take some research to show that it isn't a net negative
for simple queries. It sounds like you're not really interested
in pursuing that right now?
Anyway, I rebased the POC patch up to HEAD, just in case anyone
still wants to play with it.
regards, tom lane
| Attachment | Content-Type | Size |
|---|---|---|
| poc_eclass_indexing_v4.patch | text/x-diff | 17.2 KB |
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