Consider their id is also same. Then how to preserve only one record, and delete rest duplicate of all records?
+-------+--------+--------+-------+
| empid | name | salary | dept |
+-------+--------+--------+-------+
| 100 | danial | 12000 | civil |
| 101 | giri | 7000 | comp |
| 100 | danial | 12000 | civil |
| 101 | giri | 7000 | comp |
+-------+--------+--------+-------+
Here I want to delete one danial or giri and another one should not be deleted how to do this?