在SQL2000查询中使用XDR的例子

核心提示：XDR不会不知道吧？就是简化的xml(标准化越来越近了)-Data啦。现在示范一个如何实现这样的查询SELECT o.OrderID, o.OrderDate from Orders o, Customers c,WHERE o.CustomerID = c.CustomerID and c.CompanyName =

　　XDR不会不知道吧？就是简化的xml(标准化越来越近了)-Data啦。现在示范一个如何实现这样的查询

SELECT o.OrderID, o.OrderDate from Orders o, Customers c,

WHERE o.CustomerID = c.CustomerID and c.CompanyName = ?

Code:

<%@ Language=VBScript %>

<%

　　Dim sConn

　　sConn = "Provider=SQLOLEDB; Data Source=(local); Initial Catalog=Northwind; User ID=SA;Password=;"

　 

　　Dim adoConn

　　Set adoConn = Server.CreateObject("ADODB.Connection")

　　adoConn.ConnectionString = sConn

　　adoConn.CursorLocation = 3 'adUseClient

　　adoConn.Open

　 

　　Dim adoCmd

　　Set adoCmd = CreateObject("ADODB.Command")

　　Set adoCmd.ActiveConnection = adoConn

　　adoCmd.CommandText = "Customer[@CompanyName=""Tortuga Restaurante""]"

　　adoCmd.Dialect = "{ec2a4293-e898-11d2-b1b7-00c04f680c56}"

　 

　　adoCmd.Properties("Mapping Schema") = "Orders.xml(标准化越来越近了)"

　　adoCmd.Properties("Base Path") = "C:\INETPUB\WWWROOT\PBA\"

　　adoCmd.Properties("Output Stream") = Response

　 

　　Response.write "<xml(标准化越来越近了) ID='MyDataIsle'>"

　　adoCmd.Execute , , 1024 'adExecuteStream

　　Response.write "</xml(标准化越来越近了)>"

%>



Result:

<xml(标准化越来越近了) ID="MyDataIsle">

<Customer CustomerID="TORTU" CompanyName="Tortuga Restaurante">

　<Order CustomerID="TORTU" OrderID="10276" OrderDate="1996-08-08T00:00:00" />

　<Order CustomerID="TORTU" OrderID="10293" OrderDate="1996-08-29T00:00:00" />

　<Order CustomerID="TORTU" OrderID="10304" OrderDate="1996-09-12T00:00:00" />

　<Order CustomerID="TORTU" OrderID="10319" OrderDate="1996-10-02T00:00:00" />

　<Order CustomerID="TORTU" OrderID="10518" OrderDate="1997-04-25T00:00:00" />

　<Order CustomerID="TORTU" OrderID="10576" OrderDate="1997-06-23T00:00:00" />

　<Order CustomerID="TORTU" OrderID="10676" OrderDate="1997-09-22T00:00:00" />

　<Order CustomerID="TORTU" OrderID="10842" OrderDate="1998-01-20T00:00:00" />

　<Order CustomerID="TORTU" OrderID="10915" OrderDate="1998-02-27T00:00:00" />

　<Order CustomerID="TORTU" OrderID="11069" OrderDate="1998-05-04T00:00:00" />

</Customer>

</xml(标准化越来越近了)>　



Orders.xml(标准化越来越近了)

<?xml(标准化越来越近了) version="1.0" ?>

<Schema xml(标准化越来越近了)ns="urn:schemas-microsoft-com:xml(标准化越来越近了)-data" xml(标准化越来越近了)ns:dt="urn:schemas-microsoft-com:datatypes"

xml(标准化越来越近了)ns:sql="urn:schemas-microsoft-com:xml(标准化越来越近了)-sql">

　<ElementType name="Order" sql:relation="Orders">

　　<AttributeType name="CustomerID" />

　　<AttributeType name="OrderID" />

　　<AttributeType name="OrderDate" />



　　<attribute type="CustomerID" sql:field="CustomerID" />

　　<attribute type="OrderID" sql:field="OrderID" />

　　<attribute type="OrderDate" sql:field="OrderDate" />

　</ElementType>

　<ElementType name="Customer" sql:relation="Customers">

　　<AttributeType name="CustomerID" />

　　<AttributeType name="CompanyName" />

　　<attribute type="CustomerID" sql:field="CustomerID" />

　　<attribute type="CompanyName" sql:field="CompanyName" />

　　<element type="Order">

　　　<sql:relationship key-relation="Customers" key="CustomerID" foreign-key="CustomerID" foreign-

relation="Orders" />

　　</element>

　</ElementType>

</Schema>