
XMLParse parses and generates an XML instance from the evaluated result of value_expr. The value_expr must resolve to a string. If value_expr resolves to null, then the function returns null.
If you specify DOCUMENT, then value_expr must resolve to a singly rooted XML document.
If you specify CONTENT, then value_expr must resolve to a valid XML value.
When you specify WELLFORMED, you are guaranteeing that value_expr resolves to a well-formed XML document, so the database does not perform validity checks to ensure that the input is well formed.
See Also:
Oracle XML DB Developer's Guide for more information on this functionThe following example uses the DUAL table to illustrate the syntax of XMLParse:
SELECT XMLPARSE(CONTENT '124 <purchaseOrder poNo="12435"> <customerName> Acme Enterprises</customerName> <itemNo>32987457</itemNo> </purchaseOrder>' WELLFORMED) AS PO FROM DUAL; PO ----------------------------------------------------------------- 124 <purchaseOrder poNo="12435"> <customerName> Acme Enterprises</customerName> <itemNo>32987457</itemNo> </purchaseOrder>