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MySQL delete dupes, keep newer

MySql

MySQL delete dupes, keep newer.s Raw #

DELETE mytable
    FROM mytable
    INNER JOIN (
            SELECT max(id) AS lastId, someColumnWithDupes
            FROM mytable
            GROUP BY someColumnWithDupes
            HAVING count(*) > 1
            ) duplic ON duplic.someColumnWithDupes = mytable.someColumnWithDupes
    WHERE mytable.id < duplic.lastId;