Reports Starter Kit详细介绍(二)

这次接着继续分析交叉分析报表和详情资料报表

1.交叉分析报表

交叉分析报表是根据不同的年份,然后根据不同的季度统计月份销售总额和各地区销售总额

先看下图

<asp:datalist id="QuartersList" runat="server" cellspacing="0" cellpadding="0">
<ItemTemplate>
<TABLE cellSpacing="0" cellPadding="3" border="0">
<TR>
<TD class="textbold" colSpan="2">Quarter
</TD>
</TR>
<TR>
<TD colSpan="2"><IMG height="5" src="images/spacer.gif"></TD>
</TR>
<TR>
<TD><IMG src="images/spacer.gif" width="30"></TD>
<TD>
<TABLE cellSpacing="0" cellPadding="0" border="0">
<asp:datagrid id=DataGrid1 runat="server" CssClass="Content" CellPadding="3" OnItemDataBound="SumItems" DataSource="<%# GetQuarterDetails((int)Container.DataItem) %>" ShowFooter="True" GridLines="None" AutoGenerateColumns="False" width="600">
<columns>
<asp:templatecolumn headertext="Month" itemstyle-cssclass="ItemStyle" headerstyle-cssclass="HeaderStyle"
footerstyle-cssclass="FooterStyle">
<itemtemplate>
</itemtemplate>
</asp:templatecolumn>
<asp:boundcolumn datafield="Eastern" headertext="Eastern" itemstyle-cssclass="ItemStyleRight" headerstyle-cssclass="HeaderStyleRight"
footerstyle-cssclass="FooterStyleRight"></asp:boundcolumn>. </asp:datagrid></TABLE>
</TD>
</TR>
<TR> <TD colSpan="2"><IMG height="10" src="images/spacer.gif"></TD>
</TR>
</TABLE>
</ItemTemplate>
<HeaderStyle CssClass="ReportTitle"></HeaderStyle>
</asp:datalist>

DataList没有绑定数据库中的数据，而是绑定了一个数组，表示季节

1private void BindList()
2protected CrossTabReportCollection GetQuarterDetails(int quarter)

ALTER PROCEDURE Reports_GetSalesByRegion
(
@Year int,
@Quarter int
)
AS
--销售总额为各个地区销售额的总和
Select
*, TotalMonth = Eastern + Western + Northern + Southern
From
(
--销售月份
Select DatePart(month, OrderDate) MonthOfSales,
--东部地区
Sum(Case RegionID When 1 Then (UnitPrice * Quantity ) Else 0 End) As Eastern,
--西部地区
Sum(Case RegionID When 2 Then (UnitPrice * Quantity ) Else 0 End) As Western,
--北部地区
Sum(Case RegionID When 3 Then (UnitPrice * Quantity ) Else 0 End) As Northern,
--南部地区
Sum(Case RegionID When 4 Then (UnitPrice * Quantity ) Else 0 End) As Southern
From Reports_Orders O
--地区
Inner Join Reports_Territories T On O.TerritoryID = T.TerritoryID
--订单详细
Inner Join [Reports_Order Details] OD On O.OrderID = OD.OrderID
--年份,季节条件
Where Year(OrderDate) = @Year And DatePart(q, OrderDate) = @Quarter
--按月份分组
Group By DatePart(month, OrderDate)

) As T
Order By MonthOfSales

我根据上面的语句改了一下，下面的语句看起来比较容易理解

ALTER PROCEDURE Reports_GetSalesByRegion
(
@Year int,
@Quarter int
)
AS
--销售总额为各个地区销售额的总和

--销售月份
Select DatePart(month, OrderDate) MonthOfSales,

--东部地区
Sum(Case RegionID When 1 Then (UnitPrice * Quantity ) Else 0 End) As Eastern,
--西部地区
Sum(Case RegionID When 2 Then (UnitPrice * Quantity ) Else 0 End) As Western,
--北部地区
Sum(Case RegionID When 3 Then (UnitPrice * Quantity ) Else 0 End) As Northern,
--南部地区
Sum(Case RegionID When 4 Then (UnitPrice * Quantity ) Else 0 End) As Southern,
Sum(UnitPrice * Quantity) As TotalMonth

From Reports_Orders O
--地区
Inner Join Reports_Territories T On O.TerritoryID = T.TerritoryID
--订单详细
Inner Join [Reports_Order Details] OD On O.OrderID = OD.OrderID
--年份,季节条件
Where Year(OrderDate) = @Year And DatePart(q, OrderDate) = @Quarter
--按月份分组
Group By DatePart(month, OrderDate)

其他的实现，还有页脚统计区域销售额，格式化，同上次讲的例子实现方法相同
实现代码需写在Item_Created事件里面，由于镶套在DataList里，需要手动写代码．
以为我是认为是实现报表效果的关键

２,详细资料报表

详细资料报表中有两张表,一张表按年度,月份统计订单数和销售额,另一张表则显示全年或指定季度订单的信息

private void YearDropDownList_SelectedIndexChanged(object sender, System.EventArgs e)

private void QuarterDropDownList_SelectedIndexChanged(object sender, System.EventArgs e)

ALTER PROCEDURE Reports_GetOrderSummary
(
@Year int
)
AS

--从订购日期中取季节
SELECT
DATEPART(q, OrderDate) Quarter,
--统计订单数
COUNT(DISTINCT Reports_Orders.OrderID) OrdersShipped,
--统计销售额
SUM(UnitPrice * Quantity * (1-Discount)) Sales
FROM Reports_Orders
--订单表和订单明细表关联
INNER JOIN [Reports_Order Details] Details
ON Reports_Orders.OrderID = Details.OrderID
--年份等于给定参数
WHERE YEAR(OrderDate) = @Year
--按季节分组
GROUP BY DATEPART(q, OrderDate)

显示第二张表数据的存储过程

ALTER PROCEDURE Reports_GetOrdersAndDetails
(
@Year int,
@Quarter int
)
AS

SELECT
Reports_Orders.OrderID,
OrderDate,
--计算单张订单销售额
SUM(UnitPrice * Quantity * (1-Discount)) Sales

FROM Reports_Orders
INNER JOIN [Reports_Order Details] Details
ON Reports_Orders.OrderID = Details.OrderID

WHERE
--年度等于指定年度
YEAR(OrderDate) = @Year AND
(@Quarter = 0 OR
--否则,只选取指定的季节
DATEPART(q, OrderDate) = @Quarter)

GROUP BY
--按年份,订单ID,订购日期分组
DATEPART(y, OrderDate),
Reports_Orders.OrderID,
OrderDate

wehre中有一个选择,表示如果下拉框中选择是All的话,则显示全部信息,否则根据季度显示

上面的几个存储过程多处用到了时间函数,如果不熟悉的话请,参考一下帮助文件.

以上就是我对两个报表的分析.本人表达能力不强.希望对看到此文的人有帮助.也望大家指出错误