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

MySQL stores user data in a table called user in a database named mysql (by default). The following query will return 1 if a user with the specified username exists, 0 otherwise.

SELECT EXISTS(SELECT 1 FROM mysql.user WHERE user = 'username')