Indexes and NULLs (Doc ID 260613.1)

Last updated on OCTOBER 24, 2019

Applies to:

Oracle Database - Enterprise Edition - Version 9.2.0.8 to 10.2.0.4 [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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