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USE MASTER  
GO  
   
DECLARE @dbname SYSNAME  
SET @dbname = 'databasename' --这个是要删除的数据库库名  
   
DECLARE @s NVARCHAR(1000)  
DECLARE tb CURSOR LOCAL 
FOR
    SELECT s = 'kill   ' + CAST(spid AS VARCHAR)
    FROM   MASTER..sysprocesses
    WHERE  dbid = DB_ID(@dbname)  
   
OPEN   tb    
FETCH   NEXT   FROM   tb   INTO   @s  
WHILE @@fetch_status = 0
BEGIN
    EXEC (@s) 
    FETCH NEXT FROM tb INTO @s
END  
CLOSE   tb  
DEALLOCATE   tb  

EXEC ('drop   database   [' + @dbname + ']')