MySQL或MariaDB出现1558 - Column count of mysql.proc is wrong. Expected 21, found 20. Created with MariaDB 100108, now running 100421. Please use mysql_upgrade to fix this error错误的解决方法

1558 - Column count of mysql.proc is wrong. Expected 21, found 20. Created with MariaDB 100108, now running 100421. Please use mysql_upgrade to fix this error

1、进入到MySQL或MariaDB的bin目录，

执行

mysql-upgrade -uroot -proot

或

mariadb-upgrade -uroot -proot

进行修复。注意-proot中root是root用户的登录密码，请修改为实际值。