XML Modes:RAW, AUTO and PATH

Presentation by Aaron BumaDevelopment DBA

Session Overview

•FOR XML Clause

•RAW – Including ROW, ROOT and ELEMENTS•AUTO•PATH – With adding attributes

and nameless fields

FOR XML• Required for using RAW, AUTO, EXPLICIT PATH• Transforms result set into XML in a single result

FOR XML - RAW• Each row is turned into an XML node named “row”• Each column is an attribute

• You can replace “row” with your own name

• To make it well formed, add the “root” element

FOR XML – RAW, continued• If you don’t want column values as attributes use

“ELEMENTS”

DEMO

• XML RAW – with ROW, ROOT and ELEMENTS

FOR XML – AUTO• Similar to RAW, but uses table name/alias vs “row”

• ROW, ROOT and ELEMENTS can be used

DEMO

• XML AUTO

FOR XML – PATH• Like RAW, but data is elements instead of attributes

• ROW, ROOT and ELEMENTS can be used

FOR XML – PATH, continued• With PATH, you can put values in attributes: @alias

• Adding “/” in the column alias forces nesting

FOR XML – PATH, continued• Using ‘*’ puts value as element at that level– It’s a “nameless” field because you are not labling it

DEMO

• XML PATH– Forced nesting– Nameless fields

Questions?

• RAW – Including ROW, ROOT and ELEMENTS• AUTO• PATH – With adding attributes

and nameless fields

Presentation Recording, Slides and Scripts– Available at: http://www.AaronBuma.com