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CASE and IS NULL
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gracie  
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 More options Dec 12 2007, 6:33 pm
Newsgroups: microsoft.public.sqlserver.programming
From: gracie <gra...@discussions.microsoft.com>
Date: Wed, 12 Dec 2007 15:33:03 -0800
Local: Wed, Dec 12 2007 6:33 pm
Subject: CASE and IS NULL
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I need to convert the nulls in a column to a value.

When I run the following:

SELECT
CASE
        WHEN COL1 IS NULL THEN 'UNK'
        WHEN COL1 = 'SUGAR' THEN 'SGR'
        WHEN COL1 = 'SALT' THEN 'SAL'
        WHEN COL1 = 'PEPPER' THEN 'PEP'

END AS items
FROM INV_ITEMS

It keeps returning the NULL values as NULL instead of converting them to
'UNK'.
What am I doing wrong?


 
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SQL Menace  
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 More options Dec 12 2007, 6:47 pm
Newsgroups: microsoft.public.sqlserver.programming
From: SQL Menace <denis.g...@gmail.com>
Date: Wed, 12 Dec 2007 15:47:41 -0800 (PST)
Local: Wed, Dec 12 2007 6:47 pm
Subject: Re: CASE and IS NULL
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One problem is see is that you don't have an ELSE so if a value is
'POTATO' then you will get a NULL also

WHEN COL1 = 'PEPPER' THEN 'PEP'
ELSE 'N/A' END......

Denis The SQL Menace
http://sqlservercode.blogspot.com
http://sqlblog.com/blogs/denis_gobo/default.aspx

On Dec 12, 6:33 pm, gracie <gra...@discussions.microsoft.com> wrote:


 
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Warren Brunk  
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 More options Dec 12 2007, 6:56 pm
Newsgroups: microsoft.public.sqlserver.programming
From: "Warren Brunk" <wbr...@techintsolutions.com>
Date: Wed, 12 Dec 2007 15:56:19 -0800
Local: Wed, Dec 12 2007 6:56 pm
Subject: Re: CASE and IS NULL
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Are you sure its really a null value and not just blank or something

SELECT
CASE
WHEN  COL1 IS NULL THEN 'UNK'
When  COL1 = 'NULL' THEN 'UNK'
When Col1 = '' then 'UNK'
WHEN  COL1 = 'SUGAR' THEN 'SGR'
WHEN  COL1 = 'SALT' THEN 'SAL'
WHEN  COL1 = 'PEPPER' THEN 'PEP'

END AS items
FROM esi_store_orderheader

Make sure you have all your bases covered and that the null values really
are null.

--
/*
Warren Brunk - MCITP,MCTS,MCDBA
www.techintsolutions.com
*/

"gracie" <gra...@discussions.microsoft.com> wrote in message

news:2D1C0EC2-6A78-4676-9F73-2BD00E3FFB4E@microsoft.com...


 
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Bruce  
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 More options Dec 12 2007, 7:14 pm
Newsgroups: microsoft.public.sqlserver.programming
From: "Bruce" <fake_dont_send@anything_.com>
Date: Wed, 12 Dec 2007 19:14:36 -0500
Local: Wed, Dec 12 2007 7:14 pm
Subject: Re: CASE and IS NULL
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SELECT isnull(

CASE

COL1

WHEN 'SUGAR' THEN 'SGR'

WHEN 'SALT' THEN 'SAL'

WHEN 'PEPPER' THEN 'PEP'

END, 'UNK') AS items

FROM INV_ITEMS

"gracie" <gra...@discussions.microsoft.com> wrote in message

news:2D1C0EC2-6A78-4676-9F73-2BD00E3FFB4E@microsoft.com...


 
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Tibor Karaszi  
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 More options Dec 13 2007, 2:21 am
Newsgroups: microsoft.public.sqlserver.programming
From: "Tibor Karaszi" <tibor_please.no.email_kara...@hotmail.nomail.com>
Date: Thu, 13 Dec 2007 08:21:01 +0100
Local: Thurs, Dec 13 2007 2:21 am
Subject: Re: CASE and IS NULL
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> Are you sure its really a null value and not just blank or something

... or perhaps the string 'NULL'

--
Tibor Karaszi, SQL Server MVP
http://www.karaszi.com/sqlserver/default.asp
http://sqlblog.com/blogs/tibor_karaszi

"Warren Brunk" <wbr...@techintsolutions.com> wrote in message

news:6827D2F0-BCDD-4B84-9FC8-F58BEB57A714@microsoft.com...


 
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