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Oracle® Database SQL Reference
10g Release 2 (10.2)

Part Number B14200-01
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XMLROOT

Syntax

Description of XMLRoot.gif follows
Description of the illustration XMLRoot.gif

Purpose

XMLROOT lets you create a new XML value by providing version and standalone properties in the XML root information (prolog) of an existing XML value. If the value_expr already has a prolog, then the database returns an error. If the input is null, then the function returns null.

The value returned takes the following form:

<?xml version = "version" [ STANDALONE = "{yes | no}" ]?>

Examples

The following statement uses the DUAL table to illustrate the syntax of XMLROOT:

SELECT XMLROOT ( XMLType('<poid>143598</poid>'), VERSION '1.0', STANDALONE YES)
   AS "XMLROOT" FROM DUAL;

XMLROOT
--------------------------------------------------------------------------------
<?xml version="1.0" standalone="yes"?>
<poid>143598</poid>