| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Abhijit Menon-Sen <ams(at)2ndQuadrant(dot)com> |
| Cc: | Emre Hasegeli <emre(at)hasegeli(dot)com>, Joshua Yanovski <pythonesque(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: [WIP] Better partial index-only scans |
| Date: | 2014-06-30 16:57:40 |
| Message-ID: | 11981.1404147460@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Abhijit Menon-Sen <ams(at)2ndQuadrant(dot)com> writes:
> I don't think it's fair to mark this as returned with feedback without a
> more detailed review (I think of returned with feedback as providing a
> concrete direction to follow). I've set it back to "needs review".
> Does anyone else want to look at this patch?
I offered a few comments. I think it might also be useful to try to
quantify the worst-case performance cost for this, which would arise
for a single-table query on a table with lots of indexes. Don't
have time for that myself though.
regards, tom lane
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