Created
May 16, 2012 21:45
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filtering on empty GenericRelation
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| In [24]: InsuranceClaim.objects.annotate(num_invoiceitems=Count('invoiceitems')).filter(num_invoiceitems__gt=0).count() | |
| Out[24]: 29319 | |
| In [25]: InsuranceClaim.objects.annotate(num_invoiceitems=Count('invoiceitems')).filter(num_invoiceitems__eq=0).count() | |
| Out[25]: 9826 |
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