C#利用COMPUTE子句对数据库工资表中的全部员工工资数据进行汇总，帮助C#基础用户学会COMPUTE子句的用法，这个例子是相当容易理解的。-C# use COMPUTE clause to summarize all the employees in the database payroll wage data, to help the C# basic users learn to COMPUTE clause usage, this example is fairly easy to