Crystal 2011 CONCATENATE rows' 'value INTO ONE STRING within a subreport

I have a subreport where multiple rows can be returned for a  department_id which is passed from the main report.

I have the department name in the detail section of the subreport.

What I would like to do, is each time a row is read concatenate the department name seperated by commas for example:
DepartmentA, DepartmentB, DepartmentC....
instead of
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What is your database type?
cookiejarAuthor Commented:
I cannot help with Oracle. However if you search for "return comma separated values" you might find the right syntax and create a SLQExpression to get this data. This will allow you to avoid using subreport.

The other way ( with subreport) - you need to create a "whileprinting" formula  with a shared variable and append the department to the shared variable (in the details section ).
Try this

In the main report report header
Shared StringVar DepartmentList;

In the subreport detail section
Shared StringVar DepartmentList;
DepartmentList := DepartmentList & ", " & {DepartmentField} ;

In the main report in a section after the subreport
Shared StringVar DepartmentList;


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