From: Emi Lu <emilu@encs.concordia.ca>
To: Aaron Bono <aaron.bono@aranya.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: case when... end in update clause?
Date: Wed, 12 Mar 2008 12:01:21 -0400
Message-ID: <47D7FE51.60004@encs.concordia.ca> (raw)
In-Reply-To: <bf05e51c0803120858v2a7553f7i6c2484a545bef51@mail.gmail.com>
References: <47D7FB06.10707@encs.concordia.ca>
<bf05e51c0803120858v2a7553f7i6c2484a545bef51@mail.gmail.com>
Aaron Bono wrote:
> On Wed, Mar 12, 2008 at 10:47 AM, Emi Lu <emilu@encs.concordia.ca> wrote:
>
>> Hello,
>>
>> May I know can "case when " used by update clause. If yes, how?
>>
>> I use one small Example, table: test
>> =============================
>> id
>> ==
>> 5
>> 6
>> 8
>>
>> try to update test.id
>>
>>
>> update test
>>
>> case
>> when id =5 then SET id = 6
>> end
>> ;
>>
>> <http://www.postgresql.org/mailpref/pgsql-sql;
>>
>
> Is this what you are looking for:
>
>
> update test
> set id = case when id = 5 then 6 else id end;
>
Exactly what I am looking for!
Thanks a lot!
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To: pgsql-sql@postgresql.org
Cc: emilu@encs.concordia.ca, aaron.bono@aranya.com
Subject: Re: case when... end in update clause?
In-Reply-To: <47D7FE51.60004@encs.concordia.ca>
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