XML parsing using SQL - sql

Question

How i can parse the following XML to get output like below name = Business, Value = XYZ name = Product, Value = STANDARD name = Trend, Value = Active,Active New,Sparse etc Business,Product,Trend data can be dynamic,some xml do contain, some do not,if it exists then only value should be shown.
Can you please help me with this.
<Filter>
<Expression>
<Expression Name="Business">
<Path>
<RolePathItem>
<RoleID>Gcea34afc</RoleID>
</RolePathItem>
</Path>
<AttributeRef>
<AttributeID>3d0534a20d19</AttributeID>
</AttributeRef>
</Expression>
<Expression>
<Literal>
<DataType>String</DataType>
<Value>XYZ</Value>
</Literal>
</Expression>
</Expression>
<Expression>
<Function>
<FunctionName>Equals</FunctionName>
<Arguments>
<Expression Name="Product">
<Path>
<RolePathItem>
<RoleID>6a99c8cd92fc</RoleID>
</RolePathItem>
<RolePathItem>
<RoleID>011e01b51ba0</RoleID>
</RolePathItem>
</Path>
</Expression>
<Expression>
<Literal>
<DataType>String</DataType>
<Value>STANDARD</Value>
</Literal>
</Expression>
</Arguments>
</Function>
</Expression>
<Expression>
<Function>
<FunctionName>In</FunctionName>
<Arguments>
<Expression Name="Trend">
<Path>
<RolePathItem>
<RoleID>6a99c8cd92fc</RoleID>
</RolePathItem>
<RolePathItem>
<RoleID>dad362a5a954</RoleID>
</RolePathItem>
</Path>
</Expression>
<Expression>
<Literal>
<DataType>String</DataType>
<Values>
<Value>Active</Value>
<Value>Active New</Value>
<Value>New</Value>
<Value>Sparse</Value>
</Values>
</Literal>
</Expression>
</Arguments>
</Function>
</Expression>
</Filter>

Answer 1

Because of dynamic content, I had to use some string functions, but it looks working.
DECLARE #xmlData XML = '
<Filter>
<Expression>
<Expression Name="Business">
<Path>
<RolePathItem>
<RoleID>Gcea34afc</RoleID>
</RolePathItem>
</Path>
<AttributeRef>
<AttributeID>3d0534a20d19</AttributeID>
</AttributeRef>
</Expression>
<Expression>
<Literal>
<DataType>String</DataType>
<Value>XYZ</Value>
</Literal>
</Expression>
</Expression>
<Expression>
<Function>
<FunctionName>Equals</FunctionName>
<Arguments>
<Expression Name="Product">
<Path>
<RolePathItem>
<RoleID>6a99c8cd92fc</RoleID>
</RolePathItem>
<RolePathItem>
<RoleID>011e01b51ba0</RoleID>
</RolePathItem>
</Path>
</Expression>
<Expression>
<Literal>
<DataType>String</DataType>
<Value>STANDARD</Value>
</Literal>
</Expression>
</Arguments>
</Function>
</Expression>
<Expression>
<Function>
<FunctionName>In</FunctionName>
<Arguments>
<Expression Name="Trend">
<Path>
<RolePathItem>
<RoleID>6a99c8cd92fc</RoleID>
</RolePathItem>
<RolePathItem>
<RoleID>dad362a5a954</RoleID>
</RolePathItem>
</Path>
</Expression>
<Expression>
<Literal>
<DataType>String</DataType>
<Values>
<Value>Active</Value>
<Value>Active New</Value>
<Value>New</Value>
<Value>Sparse</Value>
</Values>
</Literal>
</Expression>
</Arguments>
</Function>
</Expression>
</Filter>'
;WITH XmlRows AS (
SELECT
CONVERT(VARCHAR(MAX),ref.query('*')) XMLString
FROM #xmlData.nodes('/Filter/Expression') x ( ref )
)
,NameAndValueXml AS
( SELECT CONVERT(XML,
SUBSTRING(XMLString,
CHARINDEX('<Expression Name=',XMLString),
( CHARINDEX('</Expression>',XMLString) - CHARINDEX('<Expression Name=',XMLString) + LEN('</Expression>') ) )
) AS NameXml
,CONVERT(XML,
SUBSTRING(XMLString,
CHARINDEX('<Literal>',XMLString),
( CHARINDEX('</Literal>',XMLString) - CHARINDEX('<Literal>',XMLString) + LEN('</Literal>') ) )
)
AS ValueXml
FROM XmlRows
)
SELECT
NameXml.value('(./Expression/#Name)[1]', 'nvarchar(255)') Name,
CASE
WHEN ValueXml.exist('(/Literal/Values/*)') = 1 THEN
REPLACE(REPLACE(REPLACE(CONVERT(VARCHAR(max),ValueXml.query('(/Literal/Values/*)')),'</Value><Value>' , ','),'</Value>',''),'<Value>','')
ELSE
ValueXml.value('(./Literal/Value)[1]', 'nvarchar(max)')
END AS Value
FROM NameAndValueXml
result:
Name Value
-------- ----------------------------
Business XYZ
Product STANDARD
Trend Active,Active New,New,Sparse