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Message Posted: Sun, 22 Jul 2012 @ 19:48:11 GMT


     
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Subj:   Re: Insert statement starts OK but then slows down
 
From:   Dieter Noeth

Sravan Kumar Bodla wrote:

  Does the below statements correct?  


  SET --- UPI ---- duplicates will not be allowed double checks each row?  


No duplicates allowed, but no need to do a duplicate row check, only PI data is checked for duplicate values


  SET --- PI ---- duplicates will not be allowed, no double checks?  


No duplicate rows allowed, thus needs to check all columns for rows with the same PI values.


  MULTISET --- UPI ---- Duplicates will not be allowed, no double check for each row?  


ack, only PI data is checked for duplicate values


  MULTISET --- pi ---- Duplicates will be allowed, no double checks?  


ack


Dieter



     
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