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Select fails with ORA-00918: column ambiguously defined (Doc ID 2893075.1)

Last updated on APRIL 17, 2023

Applies to:

Oracle Database - Enterprise Edition - Version 12.1.0.2 and later
Information in this document applies to any platform.

Symptoms

Below query fails with ORA-00918: column ambiguously defined.

select d.dummy
from dual d1,
  dual d,
  dual d
WHERE d.dummy = d1.dummy
AND d.dummy(+) = d1.dummy
and d.dummy(+) = 'Y';

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution
References


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