MySQL delete duplicate records but keep latest

Question

I have unique id and email fields. Emails get duplicated. I only want to keep one Email address of all the duplicates but with the latest id<

Answer 1

If you want to keep the row with the lowest id value:

DELETE n1 FROM 'yourTableName' n1, 'yourTableName' n2 WHERE n1.id > n2.id AND n1.email = n2.email

If you want to keep the row with the highest id value:

DELETE n1 FROM 'yourTableName' n1, 'yourTableName' n2 WHERE n1.id < n2.id AND n1.email = n2.email