Deleting duplicate record from table - SQL query

Question

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

Answer 1

DELETE FROM Table t1, Table t2 WHERE t1.colDup = t2.colDup AND t1.date < t2.date

Will delete every duplicate row from Table (on column colDup) except the oldest (i.e. lowset date).