Comments on: SQL SERVER – LEN and DATALENGTH of NULL Simple Example http://blog.sqlauthority.com/2007/06/12/sql-server-len-and-datalength-of-null-simple-example/ Personal Notes of Pinal Dave Sun, 12 Feb 2012 09:22:39 +0000 hourly 1 http://wordpress.com/ By: jOSEPH http://blog.sqlauthority.com/2007/06/12/sql-server-len-and-datalength-of-null-simple-example/#comment-82724 Mon, 02 Aug 2010 18:07:45 +0000 http://blog.sqlauthority.com/2007/06/12/sql-server-len-and-datalength-of-null-simple-example/#comment-82724 Hi,
On googling this problem i was lead to your site.. and you have correctly identified the problem.
To help out other visitors, the solution is simply COALESCE the value before checking the LEN

eg:
DECLARE @MyVar VARCHAR(10)
SET @MyVar = NULL
IF (LEN(COALESCE(@MyVar, ”)) = 0)

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