Question

我正在执行以下原始查询并收到错误：Raw query must include the primary key。

user = User.objects.get(email_id=request.session['email_id'])
query = 'select date, sum(revenue) from dashboard_revenue where app_id_id IN (select id from dashboard_app where user_id_id=1) group by date'
details = Revenue.objects.raw(query)
context = {'details': details}
return render(request, 'index.html', context)

有人可以更正此查询或帮助我查找django的相应查询吗？

Answer 1

只有在返回可以映射到模型实例的内容时，才使用.raw()。但是，由于您要返回聚合，因此无法将这些聚合映射到Revenue个对象，这就是您的代码出错的原因。

您需要做的是execute your custom SQL directly against the database，其中包括：

from django.db import connection

def my_custom_sql(self):
    cursor = connection.cursor()

    query = 'select date, sum(revenue) from dashboard_revenue where app_id_id IN (select id from dashboard_app where user_id_id=%s) group by date'
    user_id = 1
    cursor.execute(query, [user_id])
    rows = cursor.fetchall()

    return rows

Django查询对应于原始查询

1 个答案: