Delete all duplicate records in a table

Monday Jun 9th 2008 by DatabaseJournal.com Staff
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This script will delete all duplicate records in a table.



>>Script Language and Platform: Oracle
This script will delete all duplicate records in a table.

Author: Pramod Vasudevan,india


DELETE FROM tablename(say EMP) 
WHERE ROWID NOT IN(SELECT MIN(ROWID) 
FROM tablename(say EMP) 
GROUP BY tablename [columnname](say EMPNO));

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