From: | DeJuan Jackson <djackson(at)speedfc(dot)com> |
---|---|
To: | shridhar_daithankar(at)persistent(dot)co(dot)in |
Cc: | zhangyue <postgresql(at)db(dot)pku(dot)edu(dot)cn>, pgsql-general(at)postgresql(dot)org |
Subject: | Re: [HACKERS] about NULL |
Date: | 2003-05-21 16:12:32 |
Message-ID: | 3ECBA570.8000809@speedfc.com |
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Lists: | pgsql-general pgsql-hackers |
SELECT * FROM tb WHERE name IS NULL;
And I think it should have been on the SQL list, myself...
Shridhar Daithankar wrote:
>On 21 May 2003 at 16:10, zhangyue wrote:
>
>
>
>>Hi,
>>How can I get the tuples one of whose attributes is NULL?
>>For example,
>> First, create table tb(id int,name text);
>> Then insert into tb values(1);
>>insert into tb values(2,'Rose');
>> I want to select the tuples whose attribute name= NULL,
>>How to write the sql ?
>>
>>
>
>select columns from table where attribute is null;
>
>This should have been on postgresql-general, not on hackers..
>
>HTH
>
>Bye
> Shridhar
>
>--
>Fourth Law of Applied Terror: The night before the English History mid-term,
>your Biology instructor will assign 200 pages on planaria.Corollary: Every
>instructor assumes that you have nothing else to do except study for that
>instructor's course.
>
>
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