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ORA-1427 when Comparing Variable to a Subquery (Doc ID 1004504.6)

Last updated on FEBRUARY 17, 2024

Applies to:

Oracle Database - Enterprise Edition - Version 7.3.4.0 and later
SQL*Plus - Version 8.0.6.0 and later
Oracle Database Cloud Schema Service - Version N/A and later
Oracle Database Exadata Express Cloud Service - Version N/A and later
Gen 1 Exadata Cloud at Customer (Oracle Exadata Database Cloud Machine) - Version N/A and later
Information in this document applies to any platform.

Symptoms

 ORA-1427 "single-row subquery returns more than one row" from a subquery.

Cause

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