在sql2005中对不同XML的解析.-优快云博客

本文介绍了使用SQL Server中的sp_xml_preparedocument及OPENXML函数处理XML数据的方法。通过三个实例展示了如何解析复杂的XML结构，并抽取所需的数据字段。

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--eg1.
DECLARE @idoc int;
DECLARE @doc varchar(4000);
SET @doc ='
 <flight><datetime> 2007-11-22   09:27:04 </datetime><method> MOD </method><type> A </type><flightinfor><flightattr> 21 </flightattr><aircrafttype> E145 </aircrafttype></flightinfor></flight>
'
EXEC sp_xml_preparedocument @Idoc OUTPUT, @doc  --形成各节点（元素、属性、文本和注释等）的树状表示形式 返回一个句柄
 SELECT * FROM OPENXML (@Idoc, '/FLIGHT/FLIGHTINFOR',2)WITH (
			dt DATETIME  '../DATETIME'
			,METHOD varchar(20) '../METHOD'
			,tp char(1)'../TYPE'
			,FLIGHTATTR  int  'FLIGHTATTR'
			,AIRCRAFTTYPE varchar(10)'AIRCRAFTTYPE'
)
exec sp_xml_removedocument @Idoc
--结果:
/*
dt	METHOD	tp	FLIGHTATTR	AIRCRAFTTYPE
2007-11-22 09:27:04.000	MOD	A	21	E145
*/

--eg2.
DECLARE @idoc int
DECLARE @doc varchar(1000)
SET @doc ='
<root><customer customerid="VINET" contactname="Paul Henriot"><order customerid="VINET" orderid="10248" employeeid="5" orderdate="1996-07-04T00:00:00"><orderdetail productid="11" quantity="12"></orderdetail><orderdetail productid="42" quantity="10"></orderdetail></order></customer><customer customerid="LILAS" contactname="Carlos Gonzlez"><order customerid="LILAS" orderid="10283" employeeid="3" orderdate="1996-08-16T00:00:00"><orderdetail productid="72" quantity="3"></orderdetail></order></customer></root>'
--Create an internal representation of the XML document.
EXEC sp_xml_preparedocument @idoc OUTPUT, @doc
-- SELECT stmt using OPENXML rowset provider
SELECT *
FROM   OPENXML (@idoc, '/ROOT/Customer/Order/OrderDetail',2)
         WITH (CustomerID2  varchar(10) '../../@CustomerID' ,
				ContactName varchar(20)  '../../@ContactName',
				OrderID       int         '../@OrderID',
               CustomerID  varchar(10) '../@CustomerID',
               OrderDate   datetime    '../@OrderDate',
               ProdID      int         '@ProductID',
               Qty         int         '@Quantity')
--结果:
/*
CustomerID2	ContactName	OrderID	CustomerID	OrderDate	ProdID	Qty
VINET	Paul Henriot	10248	VINET	1996-07-04 00:00:00.000	11	12
VINET	Paul Henriot	10248	VINET	1996-07-04 00:00:00.000	42	10
LILAS	Carlos Gonzlez	10283	LILAS	1996-08-16 00:00:00.000	72	3
*/

--eg3.
DECLARE @idoc int;
DECLARE @doc varchar(4000);
SET @doc ='
 <flight><c>sdfsdf</c><datetime> 2007-11-22   09:27:04 </datetime><method> MOD </method><method> MOD23 </method><method> MOD22 </method><method> MOD2 5</method><type> A </type><flightinfor><flightattr> 21 </flightattr><aircrafttype> E145 </aircrafttype><method> MOD22 </method><c2><c3>dfsdfs</c3></c2></flightinfor></flight>
'
EXEC sp_xml_preparedocument @Idoc OUTPUT, @doc  --形成各节点（元素、属性、文本和注释等）的树状表示形式 返回一个句柄
 SELECT * FROM OPENXML (@Idoc, '/FLIGHT',2)WITH (
--			DATETIME2 DATETIME  '../DATETIME'
			METHOD varchar(200) '..//METHOD/'
--			,TYPE char(1) '../TYPE'
--			,FLIGHTATTR  int  'FLIGHTATTR'
--			,AIRCRAFTTYPE varchar(10)'AIRCRAFTTYPE'
--,METHOD2 varchar(10) 'METHOD'
)
exec sp_xml_removedocument @Idoc

--结果:
/*
sdfsdf  2007-11-22   09:27:04   MOD   MOD23   MOD22   MOD2 5  A   21   E145   MOD22  dfsdfs
/*