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在下面的查询如何消除重复,Django的查询消除重复
d_query = Profile.objects.filter(company="12")
search_string ="Tom"
if search_string != "":
d_query = d_query.filter(Q(profiles__name__icontains=search_string) | Q(first_name__icontains=search_string)| Q(last_name__icontains=search_string))