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coolair
V2EX  ›  问与答

Django ORM 如何将一个表的查询结果作为新表进行查询操作?

  •  
  •   coolair · Jan 12, 2022 · 1579 views
    This topic created in 1571 days ago, the information mentioned may be changed or developed.

    SQL 写法:

    SELECT MIN(max_salary),did
    FROM
    (SELECT MAX(salary) AS max_salary,e.`department_id`  did
            FROM employees e
            GROUP BY e.`department_id`)AS tmp
    

    另外,SQLAlchemy 可以使用 alias(),请问 Django 如何实现这种写法?

    3 replies    2022-01-12 10:09:53 +08:00
    coolair
        2
    coolair  
    OP
       Jan 12, 2022
    @yonng 文档已经看过,请问如何实现?谢谢。
    IurNusRay
        3
    IurNusRay  
       Jan 12, 2022
    不是在后面接上 filter 就可以了吗
    queryset1 = A.objects.filter()
    queryset2 = queryset1.filter()
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