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Message Posted: Wed, 13 Oct 2004 @ 11:57:21 GMT


     
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Subj:   Re: Can this query be written more efficient
 
From:   Narayan Murthy

I guess so that the table structure (of all the 3 tables) are the same from John's query:

     INSERT INTO table_copy
     SELECT *
     FROM table
     WHERE (X,Y) NOT IN (SELECT DISTINCT X,Y
                         FROM Mtable)
     ;insert into table_copy
     select *
     from Mtable;

Narayan



     
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