From: | Michael Paquier <michael(at)paquier(dot)xyz> |
---|---|
To: | David Rowley <david(dot)rowley(at)2ndquadrant(dot)com> |
Cc: | Amit Langote <Langote_Amit_f8(at)lab(dot)ntt(dot)co(dot)jp>, Robert Haas <robertmhaas(at)gmail(dot)com>, Ashutosh Bapat <ashutosh(dot)bapat(at)enterprisedb(dot)com>, pgsql-committers <pgsql-committers(at)postgresql(dot)org> |
Subject: | Re: pgsql: Clarify use of temporary tables within partition trees |
Date: | 2018-07-03 09:15:07 |
Message-ID: | 20180703091507.GD11732@paquier.xyz |
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On Tue, Jul 03, 2018 at 09:05:41PM +1200, David Rowley wrote:
>
> [...]
>
> I'd categorise this one the same as I have #1 above, i.e. not
> backpatch material. It seems like something useful to look into for
> v12 though. I assumed this was done for a reason and that I just
> didn't understand what that reason was. I don't recall any comments to
> explain the reason why we build two RangeTblEntrys for each
> partitioned table.
I agree. Please let's keep v11 stable, and discuss further more on
future optimizations like the previous two items for v12, which has
plenty of time to be broken.
> In light of what Amit has highlighted, I'm still standing by the v3
> patch assuming the typo is fixed.
Yeah. Actually I'd like to add a test as well to test the recursion
call of expand_partitioned_rtentry. If you have an idea, please let me
know or I'll figure out one by myself and add it probably in
create_table.sql.
--
Michael
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