From: Emi Lu <emilu@encs.concordia.ca>
To: Scott Marlowe <scott.marlowe@gmail.com>
Cc: pgsql-sql@postgresql.org
Subject: Re: case when... end in update clause?
Date: Wed, 12 Mar 2008 12:11:09 -0400
Message-ID: <47D8009D.6000703@encs.concordia.ca> (raw)
In-Reply-To: <dcc563d10803120901j5f6bd4as8eae1320318b7060@mail.gmail.com>
References: <47D7FB06.10707@encs.concordia.ca>
<dcc563d10803120901j5f6bd4as8eae1320318b7060@mail.gmail.com>
>>
>> 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
>> ;
>
> would this work:
>
> update test set id=5 where id=6;
>
No. I provide one small fake example.
I want to know how to use case when in update/set clause as the following:
update test
set id = case when id = 5 then 6 else id end;
Thanks.
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To: pgsql-sql@postgresql.org
Cc: emilu@encs.concordia.ca, scott.marlowe@gmail.com
Subject: Re: case when... end in update clause?
In-Reply-To: <47D8009D.6000703@encs.concordia.ca>
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