Checking if mysql user exists

Question

How can I check if a user exists?

Im doing an installer for a mysql database, and I need to check if a user exits, if not create user, if yes delete user and create it a

Answer 1

If you're deleting the MySQL user anyways, then there's really no need to check if it exists first. MySQL won't throw any errors if there's nothing to delete:

DELETE FROM mysql.user WHERE User = 'username';