Comments in XQuery
You can add comments to XQuery. The comment strings are added by using the "
(:" and "
:)" delimiters. For example:
declare @x xml set @x='' SELECT @x.query(' (: simple query to construct an element :) <ProductModel ProductModelID="10" /> ')
Following is another example in which a query is specified against an Instruction column of the xml type:
SELECT Instructions.query(' (: declare prefix and namespace binding in the prolog. :) declare namespace AWMI="https://schemas.microsoft.com/sqlserver/2004/07/adventure-works/ProductModelManuInstructions"; (: Following expression retrieves the <Location> element children of the <root> element. :) /AWMI:root/AWMI:Location ') as Result FROM Production.ProductModel where ProductModelID=7