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DB2 Case Insensitivity

Posted on 2007-10-04
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Last Modified: 2008-01-09
Is there a command I can use in DB2 to make it case-insensitive?  I'm trying to query a field that contains Last Names...  but it's entered by the user so Smith could be SMITH or Smith or sMITH, etc.  I was using WHERE IN('value','value') but that doesn't seem very efficient.
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Question by:z018196
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Dave Ford earned 2000 total points
ID: 20017804

Well, the easiest method is to use the UPPER function.

e.g.
where upper(myColumn) = 'VALUE'

But, that method may cause performance problems since it makes any index over myColumn unusable. (You'll have to test how much of a performance problem it is. Depending on your query, it may not affect it at all.)

Alternately (at least on DB2 for iSeries), you can specify your data and queries to use a sort-sequence of LANGIDSHR.  That causes all SELECT's to be case-insensitive.

HTH,
DaveSlash
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