How to delete duplicates on a MySQL table?

Question

I need to DELETE duplicated rows for specified sid on a MySQL table.

How can I do this with an SQL query?

Answer 1

delete from `table` where `table`.`SID` in 
    (
    select t.SID from table t join table t1 on t.title = t1.title  where t.SID > t1.SID
)