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Message Posted: Tue, 26 Jun 2012 @ 10:53:53 GMT

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Subj:   Re: How to run Update statement faster
From:   Dieter Noeth

Could you post the Explain?

Is T1.c1 a PI or Partition column? -> same as delete and re-insert

Is the T1 SET or MULTISET?

Is the PI of T1 very non-unique? -> Duplicate rows checks


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