Updating xml nodes c

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The XQuery expression used in this example is identical to the one used in Example 5-6; the result of evaluating the XQuery expression is a sequence of table, so the overall SQL-query result set has only ten rows. Similarly, Oracle provides two mid-tier XQJ implementations for accessing these two XQuery engines.

In Example 5-10, these empty sequences are part of the overall result set of the SQL query, which contains 132 rows, one for each of the rows in table ' PASSING OBJECT_VALUE RETURNING CONTENT) FROM purchaseorder; XMLQUERY('FOR$IIN/PURCHASEORDERWHERE$I/COSTCENTEREQ"A10"AND$I/USEREQ"SMCCAIN"RET -------------------------------------------------------------------------------- 'Regular', contact VARCHAR2(20) PATH 'Name') xtab; POREF PRIORITY CONTACT -------------------- -------- -------------------- SKING-20021009123336 Fastest Steven A. Both implementations are part of Oracle XML Developer's Kit (XDK).

You use XDK to access XML data with XQJ, regardless of whether that data resides in the database or elsewhere.

In particular, you can use XDK and XQJ to access XML data in Oracle XML DB.

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The INSERT INTO purchaseorder VALUES (XMLType(bfilename('XMLDIR', 'SMCCAIN-2002091213000000PDT.xml'), nls_charset_id('AL32UTF8'))); INSERT INTO purchaseorder VALUES (XMLType(bfilename('XMLDIR', 'VJONES-20020916140000000PDT.xml'), nls_charset_id('AL32UTF8'))); SELECT XMLCast(XMLQuery('$p/Purchase Order/Reference' PASSING po.In real-world examples you will typically pass a value that is available only at runtime; Example 5-28 shows how to do that. Example 5-29 updates multiple text nodes and attribute nodes.Example 5-30 updates selected nodes within a collection. An XQuery namespace declaration has no effect outside of its XQuery expression. Example 5-15 illustrates use of a namespace declaration in an XQuery expression.

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