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Indexes and NULLs (Doc ID 260613.1)

Last updated on SEPTEMBER 20, 2022

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 9.2 to 10.2]
Information in this document applies to any platform.


This article illustrates some common reasons why indexes are not selected when NULLs are present.


This is a basic level overview with examples of index usage.


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