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BiTree/qs.py

Created November 19, 2021 13:31
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qs.py
"""
A B
b_kf B表的外键 is_admin bool
age int
"""
qs = A.objects.filter(age__gte=13).filter(b_fk__isnull=False).filter(b_fk__is_admin=True) #空的queryset
qs = A.objects.filter(age__gte=13).exclude(b_fk__isnull=True).filter(b_fk__is_admin=True) #查到了正确的queryset
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