Records With NULL in Column Not Being Returning

• Robert O'Byrne

  SSCrazy

  Points: 2017

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  June 29, 2007 at 10:01 am

  #175126

  Hi!

  I'm running a stored procedure

  Select RecID FROM tblRecs WHERE RecType <> 'xxx'

  This returns 5 records

  If I run the following

  Select RecID FROM tblRecs WHERE RecType IS NULL

  I get 200 records.

  Why am I not getting the 200 null records in the first sp?  I thought that the WHERE clause RecType <> 'xxx' should include records with RecType being a NULL value?

  The database has ANSI NULL DEFAULT = TRUE AND ANSI nulls enabled = TRUE, but I;m not clear on how these work.  I'll check out BOL for more on these two.

  Thanks!

• bledu

  SSChampion

  Points: 12335

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  June 29, 2007 at 10:07 am

  #716249

  read this article it will help you understand

  http://www.sqlservercentral.com/columnists/mcoles/fourrulesfornulls.asp

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