Perceived 'Wrong Results' Using ROWNUM with DISTINCT or ORDER BY
(Doc ID 1461173.1)
Last updated on MAY 19, 2020
Applies to:Oracle Database - Personal Edition - Version 184.108.40.206 and later
Oracle Database - Enterprise Edition - Version 220.127.116.11 and later
Oracle Database - Standard Edition - Version 18.104.22.168 and later
Oracle Database Exadata Cloud Machine - Version N/A and later
Oracle Cloud Infrastructure - Database Service - Version N/A and later
Information in this document applies to any platform.
A select statement using 'DISTINCT' or 'GROUP BY' and a 'ROWNUM' predicate is returning fewer rows than expected.
For example, the following query might return only 10 rows even when there are at least 100 distinct values in the table:
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