4 tables in 1 report. How can I do that?

Question

I have 4 tables (4 selects)  and I need place in one report.
How can I do that?

Answer 1

select t1.field1, t1.field2, .. t1.fieldn, t1_idenifier "t1"
from table 1
where
union
select t2.field1, t2.field2, .. t2.fieldn, t2_idenifier "t"
from table 2
where
select t3.field1, t3.field2, .. t3.fieldn, t3_idenifier "t3"
from table 3
union
select t4.field1, t4.field2, .. t4.fieldn, t4.t_idenifier "t4"
from table 4
Then, in Crystal Reports, create formulas
total1 where it is a summary of all the values where t1.t_identifier = "t1"
total2 where it is a summary of all the values where t2.t_identifier = "t2"
etc.
This is simplified, of course.  You need to make sure that the values held in each fieldn contain the same field for each value of n (IE, field1 for each table must be, say, the id; field2 for each table must be, say, the cost, etc).  Where there is no matching field across tables, you'll need to
set the values to null or a blank (or whatever) in the ones that don't have a corresponding field.  It's cumbersome, but it's faster processing and makes things a lot simpler on the CR side.
Edited by: Sandra Kear on Mar 3, 2009 5:52 PM