From: | Reinoud van Leeuwen <reinoud(dot)v(at)n(dot)leeuwen(dot)net> |
---|---|
To: | pgsql-sql(at)postgresql(dot)org |
Subject: | Re: why these results? |
Date: | 2011-08-01 23:01:09 |
Message-ID: | 20110801230109.GS18120@spoetnik.xs4all.nl |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-sql |
On Mon, Aug 01, 2011 at 04:50:00PM -0600, Wes James wrote:
> select count(*) from table;
>
> count
> -------
> 100
> (1 row)
>
>
> is correct
>
> select count(*) from table where col::text ~~* '%text%';
>
> count
> -------
> 1
> (1 row)
>
> is correct.
>
> But now if I do:
>
>
> select count(*) from table where col::text !~~* '%text%';
> count
> -------
> 98
> (1 row)
>
> Shouldn't it be 99? That is out of 100 records there is one that has
> "text" in column "col" so the !~~* should return 99 rows. ??
Wild guess:
select count (*) from table where col is null;
count
------
1
(1 row)
";-)
Reinoud
--
__________________________________________________
"Nothing is as subjective as reality"
Reinoud van Leeuwen reinoud(dot)v(at)n(dot)leeuwen(dot)net
http://reinoud.van.leeuwen.net kvk 27320762
__________________________________________________
From | Date | Subject | |
---|---|---|---|
Next Message | Steve Crawford | 2011-08-01 23:01:30 | Re: why these results? |
Previous Message | Adrian Klaver | 2011-08-01 23:00:31 | Re: why these results? |