无论如何，您都可以知道：
mysql> select @@datadir;+----------------------------------------------------------------+| @@datadir |+----------------------------------------------------------------+| D:documents and Settingsb394382My documentsMySQL_5_1data |+----------------------------------------------------------------+1 row in set (0.00 sec)
感谢MySql论坛的Barry Galbraith
http://forums.mysql.com/read.php?10,379153,379167#msg-379167
