Deleting Records

Question

I have a table [user_logs] with the following fields [username], [datetimelog]

Sample Data

==============
user1   2011-06-28 08:49:01
user2   2011-06-28          


        

Answer 1

DELETE from user_logs UL1, user_logs UL2
where UL1.username =UL2.datetimelog
and UL1.datetimelog < UL2.datetimelog

Try that