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Message Posted: Thu, 04 Apr 2002 @ 15:44:43 GMT


     
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Subj:   Re: On Join Index Creation
 
From:   Geoffrey Rommel

  To avoid the ambiguity problem the alias works fine, but the question is why should there be an ambiguity when i have qualified the columns to their respective tables - as "t1.a","t2.a","t1.b","t2.b"?  



Because the join index is also treated as a "table" and therefore must have distinct column names. You are, in effect, trying to create a table with columns named AA, B, B, and A.



     
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