I have the following CASE statement in a view:
(SELECT CASE
WHEN ISNULL([dbo].[tblContact].[JobTitleID], NULL) = NULL
THEN [dbo].[f_ContactNameFL]([dbo].[tblContact].[ContactID])
ELSE [dbo].[f_ContactNameFL]([dbo].[tblContact].[ContactID]) + ', ' +
[dbo].[tlkpJobTitle].[Title]
END) AS ContactNameAndT itle
It works perfectly when dbo.tblContact. JobTitleID is NOT null. When it
is null it should return a contact name but it is returning null. The
problem is not f_ContactNameFL . There is another column in the same
view that uses that function and it works perfectly. What am I doing
wrong?
Thanks,
Shelley 1 7470
You cannot check NULL for equality (it is unknown, so it doesn't equal
another unknown). The correct way to check if expression is NULL is using IS
NULL:
CASE WHEN [dbo].[tblContact].[JobTitleID] IS NULL THEN ...
The code that you posted can be simplified using the COALESCE function:
[dbo].[f_ContactNameFL]([dbo].[tblContact].[ContactID]) +
COALESCE(', ' + [dbo].[tlkpJobTitle].[Title], '') AS ContactNameAndT itle
HTH,
Plamen Ratchev http://www.SQLStudio.com This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics |
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