Columns with a Name Specified as a Wildcard Character

Columns with a Name Specified as a Wildcard Character

 

Applies To: SQL Server 2016

If the column name specified is a wildcard character (*), the content of that column is inserted as if there is no column name specified. If this column is a non-xml type column, the column content is inserted as a text node, as shown in the following example:

USE AdventureWorks2012;  
GO  
SELECT E.BusinessEntityID "@EmpID",   
       FirstName "*",   
       MiddleName "*",   
       LastName "*"  
FROM   HumanResources.Employee AS E  
INNER JOIN Person.Person AS P  
    ON E.BusinessEntityID = P.BusinessEntityID  
WHERE E.BusinessEntityID=1  
FOR XML PATH;  

This is the result:

<row EmpID="1">KenJSánchez</row>

If the column is of xml type, the corresponding XML tree is inserted. For example, the following query specifies "*" for the column name that contains the XML returned by the XQuery against the Instructions column.

SELECT   
       ProductModelID,  
       Name,  
       Instructions.query('declare namespace MI="http://schemas.microsoft.com/sqlserver/2004/07/adventure-works/ProductModelManuInstructions"  
                /MI:root/MI:Location   
              ') as "*"  
FROM Production.ProductModel  
WHERE ProductModelID=7  
FOR XML PATH;   
GO  

This is the result. The XML returned by XQuery is inserted without a wrapping element.

<row>

<ProductModelID>7</ProductModelID>

<Name>HL Touring Frame</Name>

<MI:Location LocationID="10">...</MI:Location>

<MI:Location LocationID="20">...</MI:Location>

...

</row>

Use PATH Mode with FOR XML

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