Combined Queries in BO 4.0 WebI

Question

Hi,
I am creating a combined query in the report query panel.  Query 1 has combined query 1 and combined query 2 with UNION Operator.
The combined query 1 has one dimension from Table1.Col1. The combined query 2 has one dimension from Table2.Col1.
When clicking the view script i am expecting the query to be as
select Table1.Col1
from Table1
union
select Table2.Col1
from Table2
But the webi is returning the query like below.
select Table1.Col1
from Table1, Table2
where Table1.Col1 = Table2.Col1
Union
select Table2.Col1
from Table1, Table2
where Table1.Col1 = Table2.Col1
Can anyone please suggest why it is joining both the tables? Any settings has to be done in the CMC to avoid this join?
when creating a union query in the universe with these tables no joins are formed.
Please help me on this. Thanks in advance.

Answer 1

This is really very strenge could you please check the parameter value in the file<Parameter
COMBINED_WITH_SYNCHRO
it should be yes.
Also, please check if this the universe spacific problem or happening with all the universe. Did you check with taking other dimention value in the combind query.