MERGE INTO #a USING #b ON (#a.id_ = #b.id_) WHEN NOT MATCHED BY SOURCE AND #a.date_<‘2017-09-13 09:43:48.140‘ THEN UPDATE SET #a.date_=‘‘+GETDATE()+‘‘;--在有单引号的情况下用‘+x+‘实现编译器对函数的字符串形式的认可
sql MERGE
原文：http://www.cnblogs.com/rexfieBlogs/p/7345112.html
