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UDX Showplan Operator

Extended Operators (UDX) implement one of many XQuery and XPath operations in SQL Server. All UDX operators are both logical and physical operators.

Extended operator (UDX) FOR XML is used to serialize the relational row set it inputs into XML representation in a single BLOB column in a single output row. It is an order sensitive XML aggregation operator.

Extended operator (UDX) XML SERIALIZER is an order sensitive XML aggregation operator. It inputs rows representing XML nodes or XQuery scalars in XML document order and produces a serialized XML BLOB in a single XML column in a single output row.

Extended operator (UDX) XML FRAGMENT SERIALIZER is a special type of XML SERIALIZER that is used for processing input rows representing XML fragments being inserted in XQuery insert data modification extension.

Extended operator (UDX) XQUERY STRING evaluates the XQuery string value of input rows representing XML nodes. It is an order sensitive string aggregation operator. It outputs one row with columns representing the XQuery scalar that contains string value of the input.

Extended operator (UDX) XQUERY LIST DECOMPOSER is an XQuery list decomposition operator. For each input row representing an XML node it produces one or more rows each representing XQuery scalar containing a list element value if the input is of XSD list type.

Extended operator (UDX) XQUERY DATA evaluates the XQuery fn:data() function on input representing XML nodes. It is an order sensitive string aggregation operator. It outputs one row with columns representing XQuery scalar that contains the result of fn:data().

Extended operator XQUERY CONTAINS evaluates the XQuery fn:contains() function on input representing XML nodes. It is an order sensitive string aggregation operator. It outputs one row with columns representing XQuery scalar that contains the result of fn:contains().

Extended operator UPDATE XML NODE updates XML node in the XQuery replace data modification extension in the modify() method on XML type.

Extended operator (UDX) icon Graphical execution plan icon

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