From: PG Doc comments form <noreply@postgresql.org>
To: pgsql-docs@lists.postgresql.org
Cc: github@jurr.org
Subject: Chapter 14.1.1, small typo on costs?
Date: Sun, 25 Oct 2020 11:07:28 +0000
Message-ID: <160362404830.24751.12549386489720350845@wrigleys.postgresql.org> (raw)
The following documentation comment has been logged on the website:
Page: https://www.postgresql.org/docs/13/using-explain.html
Description:
I am reading 14.1.1 and at the very end (just before 14.1.2) I see:
"which shows that the planner thinks that sorting onek by index-scanning is
about 12% more expensive than sequential-scan-and-sort."
I feel that 12% is incorrect, but I'm not quite sure. The costs are 268.19
and 292.65, and that's about 9% more expensive?
I'm not entirely sure though; just reading up on explain plans :)
With kind regards,
Jurrie
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