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Use SQL to delete duplicate records

Tri Yanto
12.23.2003
Rating: -4.10- (out of 5) Hall of fame tip of the month winner

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Maybe you found a mistake in your application and impacted to the duplicate key found in file that you don't need. Now what? Here is a short command in SQL that will delete duplicate keys. In this example, FILEA = File name, LIBA=Library name, and INVNO=key field.

DELETE FROM LIBA/FILEA F1 WHERE RRN(F1) > (select MIN(RRN(F2)) FROM FILEA F2 WHERE F2.INVNO=F1.INVNO)

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