Re: Question regarding the output of postgresql *explain* command

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Arup Rakshit <aruprakshit1987(at)outlook(dot)com>
Cc: pgsql-general <pgsql-general(at)postgresql(dot)org>
Subject: Re: Question regarding the output of postgresql *explain* command
Date: 2017-05-28 15:06:50
Message-ID: 2116.1495984010@sss.pgh.pa.us
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Arup Rakshit <aruprakshit1987(at)outlook(dot)com> writes:
> I was reading to day how indexing works. And I was trying some query, for example below one. What the range basically means (cost=0.28..8.30 ? I don’t understand this.

https://www.postgresql.org/docs/current/static/using-explain.html

regards, tom lane

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