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

From: Arup Rakshit <aruprakshit1987(at)outlook(dot)com>
To: pgsql-general <pgsql-general(at)postgresql(dot)org>
Subject: Re: Question regarding the output of postgresql *explain* command
Date: 2017-05-28 16:23:18
Message-ID: 93CCEEDE-E270-4297-A84F-EEE625922ED5@outlook.com
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Hi Tom,

Thanks, I’ll read this page.

> On May 28, 2017, at 8:36 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>
> 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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