grant错误，解释得详细的加分！
没学过数据库，照抄书上的．
mysql> grant all on depot_development.* to 'dave '@ 'localhost ';
这个句子是什么意思，为什么会导致出错？
ERROR 1133 (42000): Can 't find any matching row in the user table

上面这个是什么错误？
＝＝＝＝＝＝＝＝
Enter password: *********
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1 to server version: 5.0.27-community-nt

Type 'help; ' or '\h ' for help. Type '\c ' to clear the buffer.
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| depot_development |
| depot_production |
| depot_test |
| mybook |
| mysql |
| test |
+--------------------+
7 rows in set (0.00 sec)

mysql> grant all on depot_development.* to 'dave '@ 'localhost ';

ERROR 1133 (42000): Can 't find any matching row in the user table

mysql> grant all on depot_test.* to 'dave '@ 'localhost ';

ERROR 1133 (42000): Can 't find any matching row in the user table

mysql> grant all on depot_production.* to 'prod '@ 'localhost ' identified by 'wibb
le ';
Query OK, 0 rows affected (0.00 sec)


[解决办法]
grant all privileges on depot_development.* to 'dave '@ 'localhost ';
[解决办法]
这是Rails敏捷Web开发那本书上的例吧.

你上面没有dave这个用户.

我是用
mysql> grant all on depot_development.* to 'root '@ 'localhost ';
就好了.

然后成功提示
Query OK.0 row affected (0.08sec)

------------------------------
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[解决办法]
grant all privileges(所有权限) on depot_development.*（在depot_development的所有表上） to 'dave '@ 'localhost '（用户）identified by '123456 '(用户密码：123456);