https://www.cnblogs.com/My-Dream/p/6270308.html
https://www.cnblogs.com/xunziji/archive/2012/03/20/2408348.html
https://docs.microsoft.com/zh-cn/previous-versions/sql/sql-server-2012/ms189741(v=sql.110)?redirectedfrom=MSDN
原文：https://www.cnblogs.com/huanghongbo/p/13964274.html