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Database Tuning (MOSC)

Index selectivity

May 30, 2018 5:10AM edited Jun 12, 2018 5:03AM in Database Tuning (MOSC) 9 commentsAnswered

Hello Gurus,

Kindly clarify what is meant by index selectivity. When I browse the net, various types of selectivities are listed:

column selectivity, table selectivity, predicate selectivity, join selectivity, index selectivity which is very confusing.

Thanks in advance

Regards

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