How can I delete duplicate rows in a table

Question

I have a table with say 3 columns. There\'s no primary key so there can be duplicate rows. I need to just keep one and delete the others. Any idea how to do this is Sql Serv

Answer 1

I'm not sure if this works with DELETE statements, but this is a way to find duplicate rows:

 SELECT *
 FROM myTable t1, myTable t2
 WHERE t1.field = t2.field AND t1.id > t2.id

I'm not sure if you can just change the "SELECT" to a "DELETE" (someone wanna let me know?), but even if you can't, you could just make it into a subquery.