How to delete duplicate rows from a MySQL table

Question

I have a MySQL table like:

ID, Col1, Col2, Col3, Col4, etc...

ID is a primary key and has been w

Answer 1

you can delete all the rows except one by using some function like Min(depends on db). Ex:

delete from Table_Name
where Id not in
( select min(Id)
from  Table_Name
group by ID, Col1, Col2, Col3, Col4);