mysql错误：mysql.proc is wrong

错误提示：

1558 - Column count of mysql.proc is wrong. Expected 20, found 16. Created with MySQL 50018, now running 50146. Please use mysql_upgrade to fix this error.

mysql.proc
这个是5.1里面的系统表来的,用来记录存储过程或函数的信息.

你的数据库肯定作过升级或用不同的版本进行备份迁移恢复.

解决办法:
使用命令：mysql_upgrade 就可以解决

mysql_upgrade -u root --datadir=/opt/mysql --basedir=/opt/mysql/data --password=123456

MySQL utility for upgrading databases to new MySQL versions.