Counter in Transform

Question

Hello,
I have input that has multiple set of Element called <Vehicle> </Vehicle>. Vehicle has attribute called VehicleCode that takes string value.
I have destination XSD. I am using Transform activity to MAP these multiple <Vehicle> to destination XSD using For-Each. Everything is mapping Good.
only problem is, I need to construct Vehiclecode using few of the input XSD elements and finally it would look like follow..........
CarModel-00#Year-13023445654333-1 (I know to use concat function to append this string)
In above 13023445654333 -------- is a current dateTimeStamp
1 -------- is counter
Problem :
1> How do i construct Timestamp and
2> More important since at the end it is a counter, how do i increment it ?
Meaning the second SET would look like CarModel-00#Year-13023445654333-2
Third SET would look like CarModel-00#Year-13023445654333-3
Fourth like CarModel-00#Year-13023445654333-4
so on.... till all SETs in input is complete.
So since I am using Transform in Mapping these SETs to destination XSD, then how can I say in transform that increment that last counter by one for each subsequent set ???
thanks,
dd

Answer 1

How about this?
SQL> r
  1  select dname, ename,
  2         row_number() over (partition by dname order by ename) rn
  3  from emp, dept
  4* where emp.deptno=dept.deptno
DNAME          ENAME              RN
ACCOUNTING     CLARK               1
ACCOUNTING     KING                2
ACCOUNTING     MILLER              3
RESEARCH       ADAMS               1
RESEARCH       FORD                2
RESEARCH       JONES               3
RESEARCH       SCOTT               4
RESEARCH       SMITH               5
RESEARCH       WARD                6
SALES          ALLEN               1
SALES          BLAKE               2
SALES          JAMES               3
SALES          MARTIN              4
SALES          TURNER              5
SALES          WARD                6
15 rows selected.
SQL>