QlikView图表显示同比数据:数据准备如下： SalesData:LOADNum(ID) as ID,Date(Date) as Date,Month,Num(Year) as Year,Num(Sales) as SalesInline [ID, Date, Month, Year, Sales1, 2012-1-1, 1, 2012, 202, 2012-1-1, 2, 20