How to get xml from many records? - sql

Question

So I have the below that will allow me to get xml from one record in the Products table.
However, I need to to be able to get the XML from ALL records in the Products table, along with its ProductId.
I'm confused on how to start this.
DECLARE #MyXML XML
SET #MyXML =
(SELECT ProductsXML
FROM Products
WHERE ProductId= 1)
SELECT
a.b.value('#upccode','int') as UPC,
a.b.value('#dateadded','date') as DateAdded
FROM
#MyXML.nodes('xml/Product/UPC')a(b);
I'm using SQL Server 2008.
Test Data:
ProductId: 1
ProductsXML:
<xml>
<Product>
<UPC upccode="1237" dateadded="10/9/2012"/>
<UPC upccode="1236" dateadded="10/8/2012"/>
<UPC upccode="1235" dateadded="10/7/2012"/>
<UPC upccode="1234" dateadded="10/6/2012"/>
</Product>
</xml>
ProductId: 2
ProductsXML:
<xml>
<Product>
<UPC upccode="9876" dateadded="9/9/2012"/>
<UPC upccode="9877" dateadded="9/8/2012"/>
<UPC upccode="0998" dateadded="9/7/2012"/>
<UPC upccode="7877" dateadded="9/6/2012"/>
</Product>
</xml>
The Result I'm looking for is something like this:
ProductId UPC DateAdded
--------- --- ---------
1 1237 10/9/2012
1 1236 10/8/2012
....
2 9876 9/9/2012
2 9877 9/8/2012
Right now I can get the above but ONLY by specifying one PoductId at a time. I want to be able to run all of the `Products' without specifying each entry.

Answer 1

I guess you are looking for something like this.
SELECT ProductId,
a.b.value('#upccode','int') as UPC,
a.b.value('#dateadded','date') as DateAdded
FROM Products
CROSS APPLY ProductsXML.nodes('xml/Product/UPC')a(b);
There is no need to have a XML variable in there. Query the Products table directly and use CROSS APPLY against ProductsXML field to shred your XML.

Answer 2

hi u can try using Linq to xml to create an entity from the xml, see the sample code below
XDocument somedoc = XDocument.Load("your xml path");
var somelist = from somevariable in somedoc.Descendants("Product")
select new Product {
UPC = somevariable.Attribute("upccode").value
DateAdded = somevariable.Attribute("dateadded").value
}
so now somelist is a collection thru which u can iterate and add to List<Product>, create product b4 u start tryinh this