Selection formula no values

Question

Using:
Crystal Reports XI SP5
Windows XP Pro
Dear Crystal Reports users,
As been a Crystal Reports developer, I came across the following problem. I'm using a table that contains rows for the input and output processes. I want to limit this table to only show the input processes.
The situation is as followed:
A user creates a order, to this order the user adds products he wants. For this product there is a packing process, this packing process has a input and output process, this is 1 process number, but has different batch numbers for the input and output process. However, sometimes there are no input processes, because the product is prepacked, that is what this problem is about.
The table is (re)named Processes_input
Linking is as followed:
Orders
|---> Left outer join (Enforced from) ---> Processes
|---> Left outer join (Enforced from) ---> Processes_input
However, when I try to do this with the select expert, with the following code:
{Proceses_input.Input_indicator} = 1
The report doesn't return process rows, because there is no input process, but I do want to display the orderline data and process data for that row.
I then tried to add Processes_input with an query
SELECT proc_input.*
FROM Processes proc_input
WHERE proc_input.Input_indicator = 1
Same linking as before only no selection formula.
This works some times, but when the datasource changes, the report doesn't return any data but there is data on the input process...
Does anyone know what to do, to get the correct data and still be able to switch dataconnections, since the report is used in a test enviroment and production enviroment.
Hoping on your response.
With kind regards,
Cyrus

Answer 1

Thanks for your help. I found out where the problem was.
The problem was that I was using a query that didn't assign a custom name for the table, I think that is why Crystal Reports couldn't handle the database tables correctly. The problem was solved by using a custom name for the table.
Wrong:
SELECT *
FROM Processes
WHERE Input_process = 1
Correct:
SELECT Process_input.*
FROM Processes Process_input
WHERE Process_input.Input_process = 1
Thanks for your help and I hope this will help others with the same problem.
With kind regards,
Cyrus
Edited by: Cyrusje on Jan 15, 2010 8:19 AM