Database Tuning (MOSC)

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Tune SQL

edited Aug 17, 2009 1:37AM in Database Tuning (MOSC) 2 commentsAnswered
 Hi,
We are trying to tune some SELECT sentences, and we have two questions:

- Is a SQL with OUTER JOIN operation worse than the same operation without outer join? Why?

- Which condition generates a Hash Join? How can we avoid it?

Thanks,
Lam.

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