Case statement

Question

hi.
i have a case statement query. i wonder if in the select statement, can i do computation using different parameter from the main report to subreport?
for example, (qty * parameter)
if parameter = 0, i uses $P{abc} to multiply qty
if parameter > 0, i uses $P{xyz} to multiply qty
in this case, i've writen a sql (as below) but its does not execute.
select ....., (QTY *
case $P{QTY}
when 0 then ' * $P{abc}'
else ' $P{xyz}'
end
from....
hence, what should i do in order to get the right parameter to multiply with? pls guide. thanks.

Answer 1

I'm not sure about these parameter placeholders which are specific to whatever report tool you are using, but the structure would be (assuming the parameter value would never be less than zero):
qty * case when $P{QTY} = 0 then $P{abc} else $P{xyz} end