So I have a Django app that processes test results, and I\'m trying to find the median score for a certain assessment. I would think that this would work:
I sometimes have the need to make sure some instances are excluded from a queryset. This is the way I do it usually:
If I have queries on multiple tables like: d = Relations.objects.filter(follow = request.user).filter(date_follow__lt = last_checked)
I want to use annotate to count the number of occurances in my model, however it is not using the right field in the group by statment.instead of using the field i want (i.e. the one specified in the
I\'m trying to find a way to filter down rows of objects within Django Admin, using a queryset. e.g. Person.objects.filter(Q(n开发者_JAVA百科ame=\'John\')|Q(surname=\'Doe\'))
is there any way of doing the following Unicorn.objects.or_filter(magical=True).or_filter(unicorn_length=15).or_filter(开发者_运维百科skin_color=\'White\').or_filter(skin_color=\'Blue\')
I\'m finding this a bit tricky! Maybe someone can help me on this one I have the following model: class Unicorn(models.Model):
Imagine the following model: class Parent(Model): ... class Child(Model) father = ForeignKey(Parent) ... Some parents have children, others do not (they\'re not parents in the real meaning, it\'s
Consider two QuerySet objects of the same class. Is there a simple way to unify them into a single QuerySet by calculating 开发者_如何学Gothe union?
Consider three django models: AA, BB and CC. AA has an M2M reference to BB and BB has an M2M reference to CC.
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