Creating xml for SQL Server stored procedure - sql

Question

I have a function to insert an item into the database. It takes a lot of values as input and the values are passed as XML.
Consider a sample item XML:
<ROOT>
<Item
ItemName="CarlsApplication"
ItemTypeID="2">
<TSDefaultDescription DefaultitemDescription="C:\t.text"/>
<ItemSellers>
<ComputerObject Alias="" DisplayName="" ServiceName="" UserAccount="" />
<ComputerObject Alias="" DisplayName="" ServiceName="" UserAccount="" />
</ItemSellers>
<ItemOwners>
<ItemOwner Alias="rafchen" FirstName="Rafael" LastName="Chenkov"/>
</ItemOwners>
</Item>
</ROOT>
This has to be passed to stored procedure.
Now, each of these individual values in this XML, I have to extract from somewhere else. I can get the individual values like Item name etc, but how do I organize them into an XML that can be passed?
How do I construct this XML from the values I have?
I guess I will have to make some sort of template with this format and then put variables in that template and fill the variables to prepare the template.
Any help is greatly appreciated.

Answer 1

If I understand what you really want, You can use a query like this to generate that XML:
select
ItemName 'Item/#ItemName', --> Node:`Item` Attribute: `ItemName`
ItemTypeId 'Item/#ItemTypeId',
cast((
select
Alias 'ComputerObject/#Alias',
DisplayName 'ComputerObject/#DisplayName',
ServiceName 'ComputerObject/#ServiceName',
UserAccount 'ComputerObject/#UserAccount'
from
ItemSellers
where
ItemSellers.ItemId = Item.ItemId
for xml path('')) as xml) 'Item/ItemSellers', --> Node:`Item` Sub-Node:`ItemSellers`
cast((
select
Alias 'ItemOwner/#Alias',
FirstName 'ItemOwner/#FirstName',
LastName 'ItemOwner/#LastName'
from
ItemOwners
where
ItemOwners.ItemId = Item.ItemId
for xml path('')) as xml) 'Item/ItemOwners'
from
Item
for xml path('ROOT');
SQL Fiddle Demo