Sumifs in Crystal - crystal-reports

Question

I'm working on a database that basically looks like this (in its simplest form):
{Phase} {Code} {Qty}
Example:
{Qty} for {Phase}="R" and {Code}="Nat" = 0
{Qty} for {Phase}="F" and {Code}="Nat" = 5
{Qty} for {Phase}="R" and {Code}="Int" = 10
{Qty} for {Phase}="F" and {Code}="Int" = 15
I am trying to get a result to show me the Qty for phase "R" and Code "Nat" (where R is <> 0) otherwise give me the qty for phase "F". So for the above example I would get an answer = 5 for Nat (because qty for phase R is 0) and an answer of 10 where the code is Int (because qty for phase R <> 0)
I have used three formula fields to do this:
1: if ({PHASE}="F" and {CODE}="NAT") then {QTY} else 0
2: if ({PHASE}="R" and {Code}="NAT") then {QTY} else 0
3: if {2} = 0 then {1} else {2}
Formula fields 1 & 2 come up with the correct amounts. However formula field {3} returns both phases. For example Code "Int" Phase "R" shows as qty = 25 instead of qty = 10.
How do I get around this?

Answer 1

You need to group by {table.code} because this is not a one-row calculation, but needs to be a calculation over each code for 2+ phases (meaning 2+ rows of data).
Create a formula with two variables that will store the values of each phase, F and R. This formula needs to go in the Details section of the report.
whileprintingrecords;
numbervar Fqty;
numbervar Rqty;
if {table.phase}="F" then Fqty:={table.qty}
else Rqty:={table.qty};
Now, in the group footer, you can reference both quantity values via the variables.
whileprintingrecords;
numbervar Fqty;
numbervar Rqty;
if Fqty=0 then Rqty else Fqty
And you're done. Don't forget to reset the two variables in the group header so you don't carry the quantity over between different codes.