My goal is to shred multiple attribute values stored in multiple nodes of an XML column of a table. Must also return values from the other columns of the same table. There's a lot of records and a large XML column, therefore the T-SQL must be high performance.
Best way to describe the problem is using an example.
Sample XML:
<Bookbag>
<Book Id="1" Name="SQL"/>
<Book Id="2" Name="C#"/>
</Bookbag>
<Bookbag>
<Book Id="1" Name="Java"/>
<Book Id="2" Name="SQL"/>
</Bookbag>
Sample Table Output:
TransactionId XML
---------------- --------------------------
1 <Bookbag><Book Id="1" Name="SQL" /><Book Id="2" Name="C#" /></Bookbag>
2 <Bookbag><Book Id="1" Name="Java" /><Book Id="2" Name="SQL" /></Bookbag>
Goal - Result should look like:
TransactionId ID Name
----------------- --- -----------
1 1 SQL
1 2 C#
2 1 Java
2 2 SQL
I've included some code that put me on a dead end path, but it might show what I'm trying to do. Notice the table variable only returns one record, and also notice it cannot return the value of the TransactionId. I also want to accomplish the goal by not using a table variable so I can use set operations and reduce memory overhead for performance.
Thank you,
Jake
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So what is wrong with this:
/* Create sample table. */
Declare @BookBags Table
([TransactionId] [int] NOT NULL,
[BookBag] [xml] NOT NULL)
/* Insert sample values */
Insert Into @BookBags (TransactionId, Bookbag)
Select 1, '<Bookbag> <Book Id="1" Name="SQL"/> <Book Id="2" Name="C#"/> </Bookbag>'
Insert Into @BookBags (TransactionId, Bookbag)
Select 2, '<Bookbag> <Book Id="1" Name="Java"/> <Book Id="2" Name="SQL"/> </Bookbag>'
Select TransactionId,
x.Book.value('@Id[1]', 'int') ID,
x.Book.value('@Name[1]', 'varchar(100)') [Name]
From @BookBags
CROSS APPLY BookBag.nodes('/Bookbag/Bo
Business Accounts
Answer for Membership
by: acperkinsPosted on 2008-12-30 at 17:51:14ID: 23267672
I am confused. You say that you do not want to use variables of type table. That is fair enough, I assume you are passing in the Xml to the Stored Procedure. But then where is the Transaction ID coming from? It does not appear to be in the Xml.