Re: eval_const_expresisions and ScalarArrayOpExpr

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Heikki Linnakangas <hlinnaka(at)iki(dot)fi>
Cc: pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: eval_const_expresisions and ScalarArrayOpExpr
Date: 2017-09-12 13:29:36
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I wrote:
> Looking at the patch, it still seems solid, but I remember that one
> thing I was concerned about was whether the more generalized code
> was any slower. Not sure about a good test case to measure that
> though --- const-simplification isn't a large chunk of most workloads.

This patch no longer applies cleanly on HEAD, so here's a rebased version
(no substantive changes). As before, I think the most useful review task
would be to quantify whether it makes planning noticeably slower.

regards, tom lane

Attachment Content-Type Size
better-eval-const-expressions-2.patch text/x-diff 14.5 KB

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