Alert.objects.filter(remark__contains="wang")
# remark字段(textfield)中包含字符串 "wang" 的
filter(id__in=[123, 555, 231])
filter(id__range=[123, 456])
filter(name__contains='123')
filter(name__regex='^\w+\d+')
filter(id__lte=123) gt / gte / lt / lte
filter(start_time__range=(xx,xx))