Deleting duplicate record from table - SQL query

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有刺的猬
有刺的猬 2021-02-03 15:09

I need to delete duplicate rows only from the table, like I have 3 duplicate rows in the table, my query will delete 2 rows from 3 duplicated rows.

How can I get this? P

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  • 2021-02-03 15:40

    Please try the below query, it will definitely meet your objective

    SET ROWCOUNT 1
    DELETE test
    FROM test a
    WHERE (SELECT COUNT(*) FROM test b WHERE b.name = a.name) > 1
    WHILE @@rowcount > 0
      DELETE test
      FROM test a
      WHERE (SELECT COUNT(*) FROM test b WHERE b.name = a.name) > 1
    SET ROWCOUNT 0
    

    where test is your table name

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