Parameter to XQuery

Question

Hi,
I have a XQuery cursor in a trigger and would like to pass a parameter to the XQuery's where statement. How can this be done?
TIA,
kp
Example of code:
CURSOR C1
IS
select COL1
from TABLE1 B, t, xmltable('
for $r in $doc/Data/Section
where $r/RefNo=p_PARAMETER_VALUE
return
(<.etc..
p_PARAMETER_VALUE is in this case string.

Answer 1

You will have to use the "passing" clause and also wrap the procedure argument in a dummy element that you than should remove in the XQuery. The reason is that Oracle does not currently (I am still testing 10g2) seem to allow passing in atomic values using the passing clause. If one does not wrap the parameter in an element, the following unhelpful message is returned
ERROR at line 4:
ORA-00932: inconsistent datatypes: expected - got -
Anyway, something along the lines of what is below
create PROCEDURE test(
  table_id_in IN INTEGER,
  o_result_set_cur_out OUT sys_refcursor)
AS
  BEGIN
    OPEN o_result_set_cur_out FOR
      SELECT XMLQuery('
          for $i in ora:view("TABLE")
          where $i/ROW/TABLE_ID = xs:integer(string($param))
          return $i'
        passing xmlelement(dummy,table_id_in) as param RETURNING CONTENT) AS Query
FROM DUAL;
END; I also had to add xs:integer(string(...)) which normally should not be needed.
Anywary, perhaps it helps,
Peter