Jul 29 2008
How can find duplicate record in mysql?
Yeah. It looks simple if there is some unique column, but if not!!!
I search answer on web and i found something.
[MYSQL]
SELECT CONCAT( `firstname` , `lastname` ) as keyac , count( CONCAT( `firstname` , `lastname` ) ) AS numOfRecord FROM users
GROUP BY CONCAT( `firstname` , `lastname` ) HAVING ( COUNT( CONCAT( `firstname` , `lastname` ) ) [...]