通过manager拿到的都是QuerySet, 它对应数据库中的一个集合, 对应的语句是 SELECT QuerySet有using方法, 指定去SELECT的数据库, 而QuerySet有一组方法是返回QuerySet对象的,所以只要在这个调用链中使用 using 就行 Person.objects.all().using('search').filter(uid__gt=100) 而manager本身提供了一个方法using,...
Multiple databases Defining your databases¶ The first step to using more than one database with Django is to tell Django about the database servers you’ll be using. This is done using theDATABASESsetting. This setting maps database aliases, which are a way to refer to a specific databas...
如果你试图访问在DATABASES设置中没有定义的数据库,Django 将抛出一个django.db.utils.ConnectionDoesNotExist异常。 同步你的数据库 migrate管理命令一次操作一个数据库。默认情况下,它在default数据库上操作,但是通过提供一个--database参数,你可以告诉migrate同步一个不同的数据库。因此,为了同步所有模型到我们示例中的...
Multiple databases Django--连接多个数据库的实现方式_weixin_34115824的博客-CSDN博客 Django项目中如何使用多数据库_大江狗-CSDN博客 Django 配置app连接多个数据库 django配置连接多个数据库,自定义表名称 - momingliu11 - 博客园 11. 数据库编码 为什么不建议在 MySQL 中使用 UTF-8? 在MySQL中,“utf8”编码...
译者:Django 文档协作翻译小组,原文:Multiple databases。 本文以 CC BY-NC-SA 3.0 协议发布,转载请保留作者署名和文章出处。 Django 文档协作翻译小组人手紧缺,有兴趣的朋友可以加入我们,完全公益性质。 本文参与 腾讯云自媒体同步曝光计划,分享自作者个人站点/博客。 原始发表:2015-08-30,如有侵权请联系 cloudcomm...
When using multiple databases, you may need to figure out whether or not to run a migration against a particular database. For example, you may want toonlyrun a migration on a particular database. In order to do that you can check the database connection’s alias inside aRunPythonoperation...
I think it's possible to use multiple databases without using database routers. For example,migraterequires a database alias, so if you have a read-only database, it's usable without a router as long as you don't try to migrate it. (I didn't test it so I could be incorrect but ...
It is not always possible to restructure existing databases into a single database for use and it would be of great valu to be able to use the django database model to integrate multiple databases at some level. comment:7byGo,19年 ago ...
Django adding related field with multiple databases Posted on 2023年4月24日 at 22:16 byStack OverflowRSS I have a Django project with two databases, each has a game model and a language model that are connected with Many2Many relationships. When saving each object with: game.save(using=db)...
//docs.djangoproject.com/en/2.0/ref/settings/#databases 110 111 DATABASES = { 112 'default': { 113 'ENGINE': 'django.db.backends.sqlite3', 114 'NAME': os.path.join(BASE_DIR, 'db.sqlite3'), 115 } 116 } 117 118 119 # Password validation 120 # https://docs.djangoproject.com/en...