Django模型过滤器在按关系id过滤时避免连接

Question

Django ORM查询

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这会生成以下sql查询，[join used]

projects = Project.objects.filter(category__id=1111)

是否可以避免加入并得到这样的结果？

""""
select * 
FROM "project" 
INNER JOIN "category" ON ( "project"."category_id" = "category"."id" ) 
WHERE "project"."category_id" = 1111
""""

Answer 1

底层db列名为category_id（带有一个下划线）;你可以直接过滤：

projects = Project.objects.filter(category_id=1111)