问： 如果密码中包含反斜线，该如何处理呢？

答： 在mysql中，反斜线"\"是有特殊意义的，用于转义，因此如果密码中包含"\"，就需要特别注意。有一种一劳永逸的办法，就是在密码中不用反斜线，哈哈。另一种，那就是需要多加几个反斜线，例如：

(root:hostname:Thu Oct 15 09:15:38 2009)[mysql]> grant usage on *.* to yejr@localhost identified by 'ye\\\jr';

Query OK, 0 rows affected (0.02 sec)

(root:imysql.cn:Thu Oct 15 09:16:22 2009)[mysql]> select password('ye\jr');

+-------------------------------------------+

| password('ye\jr') |

+-------------------------------------------+

| *9DB91006131E32B22135599033C6A9C196EC3C6B |

+-------------------------------------------+

1 row in set (0.00 sec)

(root:imysql.cn:Thu Oct 15 09:23:32 2009)[mysql]> select host,user,password from user where user='yejr';

+-----------+------+-------------------------------------------+

| host | user | password |

+-----------+------+-------------------------------------------+

| localhost | yejr | *F06D79D5F57894772B64BF3164ABB714EBDBD3E2 |

+-----------+------+-------------------------------------------+

1 row in set (0.01 sec)

(root:imysql.cn:Thu Oct 15 09:16:28 2009)[mysql]> select password('ye\\\jr');

+-------------------------------------------+

| password('ye\\\jr') |

+-------------------------------------------+

| *F06D79D5F57894772B64BF3164ABB714EBDBD3E2 |

+-------------------------------------------+

1 row in set (0.01 sec)

[@tc_10.11.54.224_cnc ~]# mysql -uyejr -p'ye\jr'

Logging to file '/home/mysql/query.log'

Welcome to the MySQL monitor. Commands end with ; or \g.

Your MySQL connection id is 63

Server version: 5.x.x-percona-highperf-x-log MySQL Percona High Performance Edition (GPL)

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

(yejr:imysql.cn:Thu Oct 15 09:24:58 2009)[(none)]> Bye

从上面的例子可以看到，如果密码中有反斜线，就需要在它前面再加2个反斜线。