SQL Server 错误：924 解决方法
use master
go
DECLARE @SQL VARCHAR(MAX);
SET @SQL=''
SELECT @SQL=@SQL+'; KILL ' + RTRIM(SPID)
FROM master..sysprocesses
WHERE dbid=DB_ID('AIS20181207174817_zhengshi');
EXEC(@SQL);
Go
ALTER DATABASE AIS20181207174817_zhengshi set MULTI_USER