django models distinct
q = XXXModels.objects.values('{filed}').distinct()
django models distinct
q = XXXModels.objects.values('{filed}').distinct()
django queryset count
# Returns the total number of entries in the database.
count = Entry.objects.count()
# Returns the number of entries whose headline contains 'Lennon'
count = Entry.objects.filter(headline__contains='Lennon').count()
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