SPXmlQuery Element

The SPListQueryelement contains information an XML data file. This is not actually a query. It just specifies the location of an XML data file via server relative URL. The data file is just converted to a data set by using the .NET System.Data.DataSet.ReadXml() method with inferred schema

The TableNames element is allowed inside SPXmlQuery by the schema but will be ignored when retrieving data. There is no way to use parameters with SPXmlQuery. The XML data file referenced by the query is retrieved via SharePoint object model. Currently there is no way to get a file from a SharePoint farm other than the current farm with SPXmlQuery. The Credentials element of the SPDataSource element is ignored when getting data via SPXMLQuery. The current user context is always used.

Name	Cardinality	Has Children	Description
ServerRelativeXmlFileUrl	1	No	Server relative URL of an XML data file.