0
我正在對3個表執行相同的查詢,然後將所有查詢結合在一起。 但我覺得我消耗了很多資源,因爲它們有點複雜,我希望能夠爲所有三個表創建單個查詢,這在Django中可能嗎?Django在多個表中創建相同的查詢
我知道,在SQLAlchemy中有類似的東西:
SQLAlchemy How to joiun several tables by one query
代碼:
# Review Dish
recent_dish_review = restaurant.models.DishReview. \
objects.filter(user_id__in=id_follows,
created_at__lte=timezone.now(),
created_at__gte=days
).order_by('-created_at')[:limit]
# Review Restaurant
recent_restaurant_review = restaurant.models.RestaurantReview. \
objects.filter(user_id__in=id_follows,
created_at__lte=timezone.now(),
created_at__gte=days
).order_by('-created_at')[:limit]
# User Like Dish
recent_like_dish = restaurant.models.DishesLikes. \
objects.filter(foodie_id__in=id_follows,
created_at__lte=timezone.now(),
created_at__gte=days
).order_by('-created_at')[:limit]
return list(sorted(chain(recent_restaurant_review, recent_dish_review, recent_like_dish))