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Message Posted: Mon, 09 Jan 2012 @ 09:25:21 GMT


     
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Subj:   Re: Improving the performance of a minus query
 
From:   td newsgroup

You can try to do a left outer join and filtering on the non matching rows. But you need to implement a null replacement plus null flag joins for nullable columns.


Ulrich

www.data2knowledge.de



     
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