N是什么意思啊
CREATE DATABASE [my_btu] ON (NAME = N 'my_btu_Data ', FILENAME = N 'C:\Program Files\Microsoft SQL Server\MSSQL\data\my_btu_Data.MDF ' , SIZE = 2, FILEGROWTH = 10%) LOG ON (NAME = N 'my_btu_Log ', FILENAME = N 'C:\Program Files\Microsoft SQL Server\MSSQL\data\my_btu_Log.LDF ' , SIZE = 1, FILEGROWTH = 10%)
COLLATE Chinese_PRC_CI_AS

exec sp_dboption N 'my_btu ', N 'autoclose ', N 'true '

谢谢各位的指教！不胜感激！我想问一下：
exec sp_dboption N 'my_btu ', N 'autoclose ', N 'true '里面的N是什么意思啊！

[解决办法]
unicode字符串常量