Hi Uday
What I am suggesting is say you have requirement of showing columns C1, C2, C3,....C11 and C12=C1
then in your Query dont add any dummy extra objects. Add only objects C1 through C11 and you dont need to use custom SQL unless you need it for any other purposes.
After running the query, add all the 11 objects to a table. Create a variable with formula =C1
Insert a column to the right of the table and type in =variable in the formula box.
Hope this makes it clear.
Runali