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Wrong duplicate rows are returned when containing IN or EXISTS subquery (Doc ID 2643826.1)

Last updated on FEBRUARY 28, 2020

Applies to:

Oracle Database - Standard Edition - Version 12.2.0.1 to 19.6.0.0.0 [Release 12.2 to 19]
Information in this document applies to any platform.

Symptoms

A query containing IN or EXISTS subquery returned a wrong result (duplicate rows).

Changes


If all of the following are met, you may be hitting <Bug 30391272>:
 - IN or EXISTS subquery
 - wrong result contains wrong duplicate rows
 - Correct results return when there is "SORT UNIQUE" in the execution plan

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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