django-orm - 我可以从Django ORM查询中删除ORDER BY吗？

Question

似乎Django默认情况下将ORDER BY添加到查询中。我可以清除吗？

from slowstagram.models import InstagramMedia
print InstagramMedia.objects.filter().query

SELECT
  `slowstagram_instagrammedia`.`id`,
  `slowstagram_instagrammedia`.`user_id`, 
  `slowstagram_instagrammedia`.`image_url`,
  `slowstagram_instagrammedia`.`video_url`,  
  `slowstagram_instagrammedia`.`created_time`,  
  `slowstagram_instagrammedia`.`caption`, 
  `slowstagram_instagrammedia`.`filter`, 
  `slowstagram_instagrammedia`.`link`, 
  `slowstagram_instagrammedia`.`attribution_id`, 
  `slowstagram_instagrammedia`.`likes_count`, 
  `slowstagram_instagrammedia`.`type`
FROM
  `slowstagram_instagrammedia`
ORDER BY
  `slowstagram_instagrammedia`.`id`
ASC

```

Answer 1

您可以使用：查询中的clear_ordering方法

"""Removes any ordering settings. 

If 'force_empty' is True, there will be no ordering in the resulting
query (not even the model's default).
"""

例：

>>> from products.models import Product
>>> products = Product.objects.filter(shortdesc='falda').order_by('id')
>>> print products.query
SELECT "products_product"."id", "products_product"."shortdesc"
WHERE "products_product"."shortdesc" = falda
ORDER BY "products_product"."id" ASC
>>> products.query.clear_ordering()
>>> print products.query
SELECT "products_product"."id", "products_product"."shortdesc"
WHERE "products_product"."shortdesc" = falda