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grant all on *.* to root@%;
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ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)

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SQL code:
mysql> use mysql
Database changed
mysql> select host,user from user;
+-----------+-------+
| host | user |
+-----------+-------+
| % | model |
| % | scot |
| localhost | root |
+-----------+-------+
3 rows in set (0.00 sec)

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root  % È«¾Ö  ALL PRIVILEGES  ÊÇ 
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