Re: histogram - Mailing list pgsql-general

From Joel Reymont
Subject Re: histogram
Date
Msg-id C5E3EF26-9675-4482-9249-68CF377A33BC@gmail.com
Whole thread Raw
In response to Re: histogram  (Thomas Markus <t.markus@proventis.net>)
List pgsql-general
Thank you Thomas!

Is there a way for the code below to determine the number of rows in the table and use it?

    Thanks, Joel

On Apr 30, 2011, at 5:48 PM, Thomas Markus wrote:

> Hi,
>
> try something like this:
>
> select
>    trunc(random() * 10.)/10.
>    , count(*)
> from
>    generate_series(1,2000000)
> group by 1 order by 2

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