It's easy to find duplicates
with one field:
SELECT name, COUNT(email)
FROM users
GROUP BY email
HAVING COUNT(email) > 1
So if we have a table
ID NAME EMAIL
1 John asd@asd.com
2 Sam asd@asd.com
3 Tom asd@asd.com
4 Bob bob@asd.com
5 Tom asd@asd.com
This query will give us John, Sam, Tom, Tom because they all have the same email
.
However, what I want is to get duplicates with the same email
and name
.
That is, I want to get "Tom", "Tom".
The reason I need this: I made a mistake, and allowed to insert duplicate name
and email
values. Now I need to remove/change the duplicates, so I need to find them first.
How to get duplicate record in table
SELECT COUNT(Code),Code FROM Employees WHERE Status=1 GROUP BY Code HAVING COUNT(Code) > 1