Interface using add/remove data set i.e set operator

Question

Hello...Experts,
I have another problem on add/remove dataset.
Suppose I have 3 source tables having same structure. let's say TAB1(empno,ename,deptno),TAB2(empno,ename,deptno) and TAB3(empno,ename,deptno),but the values in tables are different, and target table TARGET_TAB(empno,ename,deptno,v_ename,v_empno) and I want to map using Union and Intersection operator.
My mapping is like this:
Dataset1
TAB1 TARGETTAB_
empno--------------- empno
ename--------------- ename
deptno-------------- deptno
v_ename
v_empno
Dataset2
TAB2 TARGETTAB_
empno----------------- empno
ename
deptno----------------- deptno
ename------------------ v_ename
v_empno
Dataset3
TAB2 TARGETTAB_
empno
ename-------------------ename
deptno------------------deptno
v_ename
empno-------------------v_empno
That means one column from TAB2 and TAB3 is mapping with one extra column of TARGET_TAB table.
when i am performing this it and click on flow it showing the error ODI-20350: your diagram contains one or more FATAL/CRITICAL errors.
Is it possible to do such interface??? How to do that interface???and what action to take to avoid the error???
Please refer me.
thanks.

Answer 1

Hello Sir...
when i am taking different no of columns for different tables, then flow is not working as it is showing the fatal error as i ve told before..
But when I took same no of columns for all tables with null values in TAB1(sal and job is null) and TAB2(job is null), after data flow no data is loaded into target, as there is an intersection and null value in table.
For example:
"select empno,ename,deptno,sal,job from TAB1 where deptno=10 union
select empno,ename,deptno,sal,job from TAB2 where sal>1500 intersect
select empno,ename,deptno,sal,job from TAB3 where job='manager' ";
This query return "0" rows selected ,as sal and job column is null and due to intersect total no of rows become '0'.
without taking null value columns in TAB1(sal,job) and TAB2(job), can we make interface???
thanks.
Edited by: soumya.rn on Mar 29, 2012 4:41 AM
Edited by: soumya.rn on Mar 29, 2012 5:17 AM