Inserting a child node in an XMLTYPE column

Question

I have a simple query:

WITH xtbl AS (
  SELECT XMLTYPE ('<a><b>1</b></a>') AS xcol 
    FROM DUAL
)
SELECT XMLQUERY ('copy $tmp := . 
                    modify 
                       insert node <c>2</c>
                         into $tmp/a/b
                       return $tmp'
                 PASSING xcol 
               RETURNING CONTENT) AS newxcol
  FROM xtbl;

What I'm trying to do is to insert a node <c> after <b> inside the node <a> but Oracle 12c is throwing this error:

ORA-19114: XPST0003 - error during parsing the XQuery expression: 
           LPX-00801: XQuery syntax error at 'EOF'
           5   -
           -  ^

I want the output as:

NEWXCOL
-------------
<a>
    <b>1</b>
    <c>2</c/>
</a>

I have tried looking in Oracle Docs for a replacement of appendChildXML and follow that example but only got the error.

I know it is very basic and I'm missing something obvious. Please help.

Answer 1

Following code should be working for 11 and 12 (deprecated):

SELECT insertXMLafter(XMLType('<a><b>1</b><c>3</c></a>'),
                 '/a/b', XmlType('<c>2</c>'))
  FROM dual;

Same code using new XMLQuery syntax:

SELECT XMLQuery('copy $tmp := . modify insert node 
                 <c>2</c>
                 after $tmp/a/b 
                 return $tmp'
                PASSING XmlType('<a><b>1</b><c>3</c></a>') RETURNING CONTENT)
  FROM dual;

More details regarding XMLQuery and also the old deprecated functions can be found here: http://docs.oracle.com/database/121/ADXDB/app_depr_upd.htm#ADXDB6160