分离数据库

execute sp_detach_db [ @dbname= ] 'database_name'   ,
 [ @skipchecks= ] 'skipchecks'  , 
 [ @keepfulltextindexfile = ] 'KeepFulltextIndexFile' 

附加数据库

execute sp_attach_db [ @dbname= ] 'dbname' , [ @filename1= ] 'filename_n' [ ,...16 ]  
-- 注意日志文件也要算在内