ORA-00939: too many arguments for function using Timezones in xquery

Question

Running on Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production
CREATE TABLE "ORT"."SAMPLE"
   ( "THEDATE" DATE,
"THETIMESTAMP" TIMESTAMP (6),
"STARTTIMESTAMP" TIMESTAMP (6) WITH LOCAL TIME ZONE,
"ENDTIMESTAMP" TIMESTAMP (6) WITH LOCAL TIME ZONE
REM INSERTING into SAMPLE
SET DEFINE OFF;
Insert into SAMPLE (THEDATE,THETIMESTAMP,STARTTIMESTAMP,ENDTIMESTAMP) values (to_date('13-06-10 14:07:52','RR-MM-DD HH24:MI:SS'),to_timestamp('13-06-19 14:27:52.000000000','RR-MM-DD HH24:MI:SS.FF'),to_timestamp('13-06-19 10:34:04.586000000','RR-MM-DD HH24:MI:SS.FF'),to_timestamp('13-06-19 15:05:38.805000000','RR-MM-DD HH24:MI:SS.FF'));
following query raises ora-00939
SELECT XMLQUERY('for $v in fn:collection("oradb:/ORT/SAMPLE")
let $date1 := $v/ROW/STARTTIMESTAMP/text()
let $date2 := $v/ROW/ENDTIMESTAMP/text()
return if ($date1 < $date2) then (concat($date1," date is less than ", $date2)) else (concat($date1," date is greater than ", $date2)) ' returning content) from dual;
ORA-00939: too many arguments for function
00939. 00000 -  "too many arguments for function"
*Cause: 
*Action:
any ideas?

Answer 1

Hi Odie,
Not too familiar with XQuery rewrite, but i suspect by providing this hint, Oracle cannot optimize the query whatsoever.... tried this hint in my actual query and basically hangs.... I will attempt at opening an SR with Oracle...
the other option i'm looking at is checking the date ranges outside of xquery, and using a mix of xmltable, xmlexists and the SQL XML functions to reconstruct my xml.