ERROR 3009 (HY000): Column count of mysql.user is wrong. Expected 45, found 43. Created with MySQL 5的解決方案。
錯誤是由於你曾經升級過數據庫，升級完后沒有使用
mysql_upgrade升級數據結構造成的。
解決辦法：
使用mysql_upgrade命令
root@localhost ~]# mysql_upgrade -u root -p 13456
ERROR 3009 (HY000): Column count of mysql.user is wrong. Expected 45, found 43. Created with MySQL 5
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