sql xml shredding, attributes, elements and levels

XMLShredding, Attributes Elements and Levels

Presented by Aaron Buma

Session Overview

• Shredding XML• Attributes• Elements• Levels

Shredding XML

• XML SQL SERVER Tabular Data• “XML Shredding”: extracting values from XML documents for

storage in a relational database• sp_XML_PrepareDocument – loads XML into memory– Returns plan handle

Shredding XML

• Removing a plan from memory– sp_XML_RemoveDocument #HandleID– Closing Session (available after SQL 2000)

Shredding XML

• OpenXML(Plan Handle, Row Pattern)– Plan Handle is the output from sp_XML_PrepareDocument – Row Pattern is the level of XML you want returned as data

Demo

Row and Column Patterning

• Returning matching Row Patterns: use ‘//’ notation

• Column Patterns from higher levels: use ‘../’ notation

OpenXML Options

• With options you can define the default column type as: Attributes (1), Elements (2), Attributes and Elements (3)

• You can still define columns as Attributes or Elements if needed

Demo

Questions?

• Any Questions?

Contact: Aaron@AaronBuma.com

Additional Free SQL Trainings at:http://www.aaronbuma.com/category/sql-training/