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Incorrect Syntax Not Detected In Subquery (No ORA-904 Generated) (Doc ID 1327574.1)

Last updated on FEBRUARY 24, 2019

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 8.1.5 to 11.2]
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.
***Checked for relevance on 01-Sep-2017***


When a field does not exist in a subquery table but exists in the outer table, Oracle does return rows instead of an error even though the subquery itself returns an error ORA-904.

The situation is illustrated with the following test case:


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