'Tripple Join with sum in django fails
How can I fetch such a query especially Mark is not attached to stream but the child's ClassInformation is the one that has the stream
has_all_marks = Mark.objects.filter(marks_class=marks_class, year=year, term=term, exam_set=exam_set, child__classinformation__stream__id=stream).values('child').annotate(
mtotal=Sum('marks')).order_by('-mtotal')
Right now the result I get is wrong. I get multiples for some mtotal
Sources
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