Re: EquivalenceClasses and subqueries and PlaceHolderVars, oh my

From: Greg Stark <stark(at)mit(dot)edu>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Yeb Havinga <yebhavinga(at)gmail(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: EquivalenceClasses and subqueries and PlaceHolderVars, oh my
Date: 2012-03-17 04:07:14
Message-ID: CAM-w4HNgteqrE=2MuunNgdApjA-tys+o_Cjz7x9xGvcWF0VkTA@mail.gmail.com
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On Fri, Mar 16, 2012 at 3:16 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>> So I now propose reverting the earlier two patches (but not their
>> regression test cases of course) and instead hacking MergeAppend plan
>> building as per (2).

As a wise man once said, "This is tricky stuff". I feel a better that
I got stuck on this stuff when you're still trying to feel your way
after this many go-arounds.

I think I'll be aiming at some less subtle things when I get back to
contributing. Things like the getrusage patch I still haven't
forgotten about.

--
greg

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