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Message Posted: Tue, 09 Jan 2007 @ 13:35:53 GMT

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> Will Teradata checks for duplicate rows twice( as part of SET and UPI

This is a well-discussed topic on the Forum so I would suggest to consult the archives. They contain really useful information. Just to get you started:

www.teradataforum.com/teradata/20060426_145529.htm

In the last posting, Mr. Walter gives his word for the following:

"IF there is a UPI, then no duplicate row checking is every required or performed by Teradata."

Regards,

Victor

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