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Message Posted: Thu, 20 Jul 2000 @ 05:30:47 GMT

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Claudia,

The best approach is to make sure you collect all relevant statistics, try to co-location as many tables as possible even if this means choosing a Primary Index very different from the Primary Key even if there are many duplicate PI values (up to 1000 if the row is small, more if you use a Multi-set table)

Try to review your approach to joining commonly joined tables. Small table / Large Table join strategy, merge join strategy, NUSI / USI / PI join strategy.

We would need more info to help you understand your challenges.

Thanks,

Eric

EJK
Eric J. Kohut
Senior Solutions Consultant - Teradata Solutions Group - Retail
NCR Corp.

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