Here's a link to my previous question on this same block of code with a working shred example
Ok, I'm a C# ASP.NET dev following orders:
The orders are to take a given dataset, shred
the XML
and return columns. I've argued that it's easier to do
the shredding on
the ASP.NET side where we already have access to things like deserializers, etc,
and the entire complex of known types, but no,
the boss says "shred it on
the server, return a dataset, bind
the dataset to
the columns of
the gridview" so for now, I'm doing what I was told. This is all to head off
the folks who will come along
and say "bad requirements".
Task at hand:
Current code that doesn't work:
And if we modify
the previous post to include namespaces on
the XML elements, we lose
the functionality that
the previous post has...
DECLARE @table1 AS TABLE (
ProductID VARCHAR(10)
, Name VARCHAR(20)
, Color VARCHAR(20)
, UserEntered VARCHAR(20)
, XmlField XML
)
INSERT INTO @table1 SELECT '12345','ball','
red','john','<sizes xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><size xmlns="http://example.com/ns" name="medium"><price>10</price></size><size xmlns="http://example.com/ns" name="large"><price>20</price></size></sizes>'
INSERT INTO @table1 SELECT '12346','ball','blue','adam','<sizes xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><size xmlns="http://example.com/ns" name="medium"><price>12</price></size><size xmlns="http://example.com/ns" name="large"><price>25</price></size></sizes>'
INSERT INTO @table1 SELECT '12347','ring','
red','john','<sizes xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><size xmlns="http://example.com/ns" name="medium"><price>5</price></size><size xmlns="http://example.com/ns" name="large"><price>8</price></size></sizes>'
INSERT INTO @table1 SELECT '12348','ring','blue','adam','<sizes xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><size xmlns="http://example.com/ns" name="medium"><price>8</price></size><size xmlns="http://example.com/ns" name="large"><price>10</price></size></sizes>'
INSERT INTO @table1 SELECT '23456','auto','black','ann','<auto xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><type xmlns="http://example.com/ns">car</type><wheels xmlns="http://example.com/ns">4</wheels><doors xmlns="http://example.com/ns">4</doors><cylinders xmlns="http://example.com/ns">3</cylinders></auto>'
INSERT INTO @table1 SELECT '23457','auto','black','ann','<auto xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><type xmlns="http://example.com/ns">truck</type><wheels xmlns="http://example.com/ns">4</wheels><doors xmlns="http://example.com/ns">2</doors><cylinders xmlns="http://example.com/ns">8</cylinders></auto><auto xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"><type xmlns="http://example.com/ns">car</type><wheels xmlns="http://example.com/ns">4</wheels><doors xmlns="http://example.com/ns">4</doors><cylinders xmlns="http://example.com/ns">6</cylinders></auto>'
DECLARE @x XML
-- I think I'm supposed to use WITH XMLNAMESPACES(...) here but I don't know how
SELECT @x = (
SELECT
ProductID
, Name
, Color
, UserEntered
, XmlField.query('
for $vehicle in //auto
return <auto
type = "{$vehicle/type}"
wheels = "{$vehicle/wheels}"
doors = "{$vehicle/doors}"
cylinders = "{$vehicle/cylinders}"
/>')
FROM @table1 table1
WHERE Name = 'auto'
FOR XML AUTO
)
SELECT @x
SELECT
ProductID = T.Item.value('../@ProductID', 'varchar(10)')
, Name = T.Item.value('../@Name', 'varchar(20)')
, Color = T.Item.value('../@Color', 'varchar(20)')
, UserEntered = T.Item.value('../@UserEntered', 'varchar(20)')
, VType = T.Item.value('@type' , 'varchar(10)')
, Wheels = T.Item.value('@wheels', 'varchar(2)')
, Doors = T.Item.value('@doors', 'varchar(2)')
, Cylinders = T.Item.value('@cylinders', 'varchar(2)')
FROM @x.nodes('//table1/auto') AS T(Item)
If my previous post shows there's a much better way to do this, then I really need to revise this question as well, but on
the off chance this coding-style is good, I can probably go ahead with this as-is...
Any takers?
