展开数据库，新建用户自定义函数，加入代码：CREATE FUNCTION dbo.getMax(@Number1 int, @Number2 int, @Number3 int)RETURNS intAS BEGIN
declare @maxValue int
set @maxValue=@Number1
if (@Number2>@maxValue)
set @maxValue=@Number2
if (@Number3>@maxValue)
set @maxValue=@Number3
return @maxVa...
