July 2012
Intermediate to advanced
816 pages
27h 38m
English
Content preview from Programming Microsoft® SQL Server® 2012Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Additional FOR XML Features
Just about all of the original XML support first introduced in SQL Server 2000 XML support revolves around FOR XML, a feature that is still very much underused by developers. Since then, SQL Server has enhanced FOR XML in the following ways:
Using the TYPE option, FOR XML can output to an xml data type (as opposed to streamed results) from a SELECT statement, which in turn allows you to nest the results of SELECT…FOR XML into another SELECT statement.
The FOR XML PATH option allows you to more easily shape data and produce element-based XML than the FOR XML EXPLICIT option that we just covered.
You can explicitly specify a ROOT element for your output.
You can produce element-based XML with FOR XML AUTO.
FOR XML can produce ...
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