执行如下语句：
mysql> select * from users into outfile "F:\Develop\MySQL57\Uploads\users.txt" lines terminated by "\r\n";
报错信息：ERROR 1290 (HY000): The MySQL server is running with the --secure-file-priv option so it cannot execute this statement
原因：
MySQL的时候限制了导入与导出的目录权限，只能在规定的目录下才能导入。
我们需要通过下面命令查看 secure-file-priv 当前的值是什么 ：
mysql> show variables like '%secure%';
+--------------------------+-----------------------------+
| Variable_name | Value |
+--------------------------+-----------------------------+
| require_secure_transport | OFF |
| secure_auth | ON |
| secure_file_priv | F:\Develop\MySQL57\Uploads\ |
+--------------------------+-----------------------------+
3 rows in set, 1 warning (0.00 sec)
再次执行：
mysql> select * from users into outfile "F:/Develop/MySQL57/Uploads/users.txt" lines terminated by "\r\n";
Query OK, 1 row affected (0.00 sec)
成功！
注意：windows和linux下，目录的分隔符都要为 / ，不能为 \ ，否则还是报同样的错误。