Re: In PG12, query with float calculations is slower than PG11

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: emre(at)hasegeli(dot)com
Cc: Andres Freund <andres(at)anarazel(dot)de>, nospam-pg-abuse(at)bloodgate(dot)com, Amit Langote <amitlangote09(at)gmail(dot)com>, Tomas Vondra <tomas(dot)vondra(at)2ndquadrant(dot)com>, keisuke kuroda <keisuke(dot)kuroda(dot)3862(at)gmail(dot)com>, PostgreSQL Hackers <pgsql-hackers(at)lists(dot)postgresql(dot)org>
Subject: Re: In PG12, query with float calculations is slower than PG11
Date: 2020-02-13 16:30:45
Message-ID: 28159.1581611445@sss.pgh.pa.us
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Emre Hasegeli <emre(at)hasegeli(dot)com> writes:
>>> Cool. Emre, any chance you could write a patch along those lines?

> How about the one attached?

I see some minor things I don't like here, eg float_*flow_error()
need some documentation as to why they exist. But I'll review,
fix those things up and then push.

regards, tom lane

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