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Posts Tagged ‘XML SQL’

MSDN & Online Technical Articles on using XML with SQL

December 22, 2011 Leave a comment

On this post I’m not going to discuss anything about XML. Here I’m listing out some links that I found very informative so that I can refer to them easily in future, and so can you.

My all previous posts on XML-SQL can be found at: https://sqlwithmanoj.wordpress.com/category/xml/

 

There are also lot of Technical Articles in MS BOL that discuss about using XML in SQL Server.

Here is a list of those:

What’s New in FOR XML: http://msdn.microsoft.com/en-US/library/ms345137(v=SQL.90).aspx

XML Best Practices: http://msdn.microsoft.com/en-US/library/ms345115(v=SQL.90).aspx

XML Indexes: http://msdn.microsoft.com/en-US/library/ms345121(v=SQL.90).aspx

XML Options: http://msdn.microsoft.com/en-US/library/ms345110(v=SQL.90).aspx

XML Support: http://msdn.microsoft.com/en-US/library/ms345117(v=SQL.90).aspx

Performance Optimizations for the XML Data Type: http://msdn.microsoft.com/en-US/library/ms345118(v=SQL.90).aspx

… enjoy reading.

 

Please post your comments and links if you found any informative online article about XML-SQL.

Categories: Datatypes, XML Tags: , , ,

Query XML string in tabular format – SQL Server

July 13, 2011 3 comments

My previous post on XML discusses how to simply SELECT records from an XML string.

On this post I’m giving few more examples on how to SELECT records from an XML string. Here are some more examples to retrieve data in a relational tabular format by querying an XML string:

DECLARE @xml XML

SET @xml=N'<Root>
    <stud id="1">
		<fname>Manoj</fname>
		<lname>Pandey</lname>
		<class>10</class>
		<marks>80.5</marks>
	</stud>
    <stud id="2">
		<fname>Saurabh</fname>
		<lname>Sharma</lname>
		<class>11</class>
		<marks>82.7</marks>
	</stud>
    <stud id="3">
		<fname>Kanchan</fname>
		<lname>Pandey</lname>
		<class>10</class>
		<marks>90.5</marks>
	</stud>
    <stud id="4">
		<fname>Rajesh</fname>
		<lname>Shah</lname>
		<class>11</class>
		<marks>70.3</marks>
	</stud>
    <stud id="5">
		<fname>Kunal</fname>
		<lname>Joshi</lname>
		<class>12</class>
		<marks>64.7</marks>
	</stud>
</Root>';

-- Select all records in tabular format from above XML string:
SELECT
Tab.Col.value('@id','int') AS ID,
Tab.Col.value('fname[1]','nvarchar(20)') AS FirstName,
Tab.Col.value('lname[1]','nvarchar(20)') AS LastName,
Tab.Col.value('class[1]','int') AS class,
Tab.Col.value('marks[1]','float') AS Marks
FROM @xml.nodes('/Root/stud') Tab(Col)

Output:-
ID FirstName LastName Class Marks
1  Manoj     Pandey   10    80.5
2  Saurabh   Sharma   11    82.7
3  Kanchan   Pandey   10    90.5
4  Rajesh    Shah     11    70.3
5  Kunal     Joshi    12    64.7

-- Select records as in Key-Value pair format:
SELECT
Tab.Col.value('../@id', 'int') AS RowID,
Tab.Col.value('local-name(.)', 'nvarchar(max)') AS ColName,
Tab.Col.value('text()[1]', 'nvarchar(max)') AS ColValue
FROM @xml.nodes('/*/*/*') AS Tab(Col)
GO

Output:-
RowID ColName ColValue
1     fname   Manoj
1     lname   Pandey
1     class   10
1     marks   80.5
2     fname   Saurabh
2     lname   Sharma
2     class   11
2     marks   82.7
3     fname   Kanchan
3     lname   Pandey
3     class   10
3     marks   90.5
4     fname   Rajesh
4     lname   Shah
4     class   11
4     marks   70.3
5     fname   Kunal
5     lname   Joshi
5     class   12
5     marks   64.7
Categories: XML Tags: ,