Crystal Report linked to a table with filter attached

Question

I have a Crystal Report based on 2 tables and I want it to display every incident in the incident table and to pull the truckID of the
first truck on the scene from the truck table . So the finished product should look like this…
IncidentID           IncidentNum     ResponseTime                  First Arriving Truck           Disctict
  1x44452                1258ab55             5:32                                        B8                              2
*The first arriving truck is the truck in the Truck Table with the same IncidentID and  the earliest ArrivalTime.  There will be multiple trucks for each incident but I want it to only show the one that arrived first (ArrivalTime).  So one line per incidentID.
Incident Table
IncidentID
IncidentNum
ResponseTime
District
Truck Table (Will contain many trucks for one incident with the following info
Truckkey
IncidentID (Link to Incident Table)
ArrivalTime
TruckID
I figure I probably need to build a formula with the min function or perhaps an OnCommand – I’m just not sure.
The biggest issue is the overall report has 4 filter settings.  They can select a date range, a location, an incident type and a range for the response time. So I do this with the Select Expert
I can get all of that to work except I cannot figure out how to get it to pull the First Arriving Truck without duplicating the incident
line.  Also, if there is a Truck with an ArrivalTime of Null I want it to ignore that Truck Table record.
Can anyone help???

Answer 1

Hi Debbie,,
You may try this:
1) Go to the Group Expert > Create a Group on the 'Incident ID' field from the Incident Table
2) Insert a summary on the 'Arrival Time' field and place the field on the Group Footer
3) Move all the fields from the Details section to the Group Footer
4) Go to the Group Selection Formula (Report > Selection Formulas > Group) and use this code:
{Truck.ArrivalTime} = Minimum({Truck.ArrivalTime}, {Incident ID})
5) Suppress the Details Section
-Abhilash