在数据库中执行查询语句，大约1秒钟查询出来，在C#中用ado进行连接查询，一直等待很久未查出结果，最后抛出查询超时异常。
异常内容如下：
Execution Timeout Expired. The timeout period elapsed prior to completion of the operation or the server is not responding.
解决方案：
exec sp_updatestats
dbcc freeproccache相关文章
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