django 的 orm 如何实现 sql 的 where (a+b) > c - V2EX

django 的 orm 如何实现 sql 的 where (a+b) > c - V2EX

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这是一个创建于 3586 天前的主题，其中的信息可能已经有所发展或是发生改变。

告诉我用哪个模块或者大概的方向就行。。。

5 条回复 2016-01-16 11:41:08 +08:00

1

facert

2016-01-15 13:45:19 +08:00

1

https://docs.djangoproject.com/en/1.9/topics/db/sql/

2

mo2zie

2016-01-15 13:46:46 +08:00

1

https://docs.djangoproject.com/en/1.9/topics/db/queries/#filters-can-reference-fields-on-the-model

3

chaleaoch

OP

2016-01-15 18:08:12 +08:00

@facert 感谢，最后正是用此解决

@mo2zie 通感谢，不过您这个不对 F 和 Q 的文档我都看了，不过好像并不适用于本主题。

4

ericls

2016-01-16 03:42:36 +08:00

1

@chaleaoch query_set.filter(c__lt=F('A')+F('B')) 不行？

5

chaleaoch

OP

2016-01-16 11:41:08 +08:00

@ericls C 非字段，而是某变量，你也可以这样理解：
where (a+b) > 100

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