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and these capabilities, SQL developers can leverage the power of the relational database while working in the context of XML.
functions use the built-in C parser and processor to parse XML data, validate it, and apply XPath expressions on it.– Xml Patch function applies the changes described in an Xdiff instance and returns the modified input document.Now comes the interesting part : Xml Diff and Xml Patch are also exposed as SQL functions.It introduces a few primitives to easily modify an XML document : updating a scalar value (attribute or text node), updating an entire element, inserting or deleting nodes, etc.
Example of Updating an XMLType column. In this release, an XML document in an XMLType is stored packed in a CLOB. Consequently updates, have to replace the document in place. We do not support piece-wise update of the XML for this release. To update an XML document, you would fire a standard SQL update.… continue reading »
Update i.e. replace the entire XMLType column with new content. SQL CREATE TABLE myTable 2 id NUMBER PRIMARY KEY 3,doc XMLType NOT NULL 4 XMLTYPE doc STORE AS CLOB 5 / Table created. SQL SQL SQL update myTable 2 set doc = xmltype'?xml version="1.0" standalone="yes"? 3 message.… continue reading »
Example 4-7 Updating XMLType. To update an XML document, you can execute a standard SQL UPDATE statement. You need to bind an XMLType instance, as follows UPDATE warehouses SET warehouse_spec = XMLType 'Warehouse whono="200" BuildingLeased/Building /Warehouse';. This example.… continue reading »