From: | Gaetano Mendola <mendola(at)bigfoot(dot)com> |
---|---|
To: | BogDan Vatra <bog_dan_ro(at)yahoo(dot)com> |
Subject: | Re: BUG #1921: NULL<>NULL ?!?!?!?!?!?!? |
Date: | 2005-09-29 13:49:36 |
Message-ID: | 433BF0F0.1060304@bigfoot.com |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-bugs |
BogDan Vatra wrote:
> The following bug has been logged online:
>
> Bug reference: 1921
> Logged by: BogDan Vatra
> Email address: bog_dan_ro(at)yahoo(dot)com
> PostgreSQL version: 8.0.3
> Operating system: win xp pro
> Description: NULL<>NULL ?!?!?!?!?!?!?
> Details:
>
> Please execute this query:
>
> create table test (id serial, tt varchar(50));
> insert into test (tt) values(NULL);
> select tt from test where tt=NULL;
>
> This should return 1 row but ...
> An then try
>
> select tt from test where tt<>NULL;
>
> 0 row(s) !!!
This is not a bug. If you want find all values with that
field null you have to do:
select tt from test where tt is null;
And I can assure you this is what the standard say.
Regards
Gaetano Mendola
From | Date | Subject | |
---|---|---|---|
Next Message | j6m | 2005-09-29 15:02:39 | Re: BUG #1921: NULL<>NULL ?!?!?!?!?!?!? |
Previous Message | Magnus Hagander | 2005-09-29 13:25:33 | Re: BUG #1920: Installer no WIN1252 & UTF8 selection |