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