尝试运行服务器时对象名称"django_migrations“无效

Question

我想将我的Django应用程序连接到客户端的MSSQL数据库(之前我的应用程序在SQLite上工作)。我在他们的测试服务器上进行了迁移，并成功运行，然后他们将此数据库复制到目标服务器，当我尝试

python manage.py runserver

它向我展示了

django.db.utils.ProgrammingError: ('42S02', "[42S02] [Microsoft][ODBC Driver 17 for SQL Server][SQL Server]Invalid object name 'django_migrations'. (208) (SQLExecDirectW)")

这可能会有什么问题？这是我的连接：

DATABASES = {
   'default': {
       'ENGINE': 'sql_server.pyodbc',
       'NAME': 'ESD',
       'HOST': 'IPaddress',
       'USER': 'Username',
       'PASSWORD': 'Password',

       'OPTIONS': {
            'driver': 'ODBC Driver 17 for SQL Server'
        }
   }
}

我也尝试过迁移，它显示了相同的错误

这里有所有的错误：

(norm)esd@server:~/Desktop/norm/myproject> python manage.py runserver
Performing system checks...

System check identified no issues (0 silenced).
Unhandled exception in thread started by <function wrapper at 0x7fc57eb4f8c0>
Traceback (most recent call last):
  File "/home/esd/Desktop/norm/lib64/python2.7/site-packages/django/utils/autoreload.py", line 226, in wrapper
    fn(*args, **kwargs)
  File "/home/esd/Desktop/norm/lib64/python2.7/site-packages/django/core/management/commands/runserver.py", line 117, in inner_run
    self.check_migrations()
  File "/home/esd/Desktop/norm/lib64/python2.7/site-packages/django/core/management/commands/runserver.py", line 163, in check_migrations
    executor = MigrationExecutor(connections[DEFAULT_DB_ALIAS])
  File "/home/esd/Desktop/norm/lib64/python2.7/site-packages/django/db/migrations/executor.py", line 20, in __init__
    self.loader = MigrationLoader(self.connection)
  File "/home/esd/Desktop/norm/lib64/python2.7/site-packages/django/db/migrations/loader.py", line 49, in __init__
    self.build_graph()
  File "/home/esd/Desktop/norm/lib64/python2.7/site-packages/django/db/migrations/loader.py", line 176, in build_graph
    self.applied_migrations = recorder.applied_migrations()
  File "/home/esd/Desktop/norm/lib64/python2.7/site-packages/django/db/migrations/recorder.py", line 66, in applied_migrations
    return set(tuple(x) for x in self.migration_qs.values_list("app", "name"))
  File "/home/esd/Desktop/norm/lib64/python2.7/site-packages/django/db/models/query.py", line 258, in __iter__
    self._fetch_all()
  File "/home/esd/Desktop/norm/lib64/python2.7/site-packages/django/db/models/query.py", line 1074, in _fetch_all
    self._result_cache = list(self.iterator())
  File "/home/esd/Desktop/norm/lib64/python2.7/site-packages/django/db/models/query.py", line 128, in __iter__
    for row in compiler.results_iter():
  File "/home/esd/Desktop/norm/lib64/python2.7/site-packages/django/db/models/sql/compiler.py", line 802, in results_iter
    results = self.execute_sql(MULTI)
  File "/home/esd/Desktop/norm/lib64/python2.7/site-packages/django/db/models/sql/compiler.py", line 848, in execute_sql
    cursor.execute(sql, params)
  File "/home/esd/Desktop/norm/lib64/python2.7/site-packages/django/db/backends/utils.py", line 64, in execute
    return self.cursor.execute(sql, params)
  File "/home/esd/Desktop/norm/lib64/python2.7/site-packages/django/db/utils.py", line 95, in __exit__
    six.reraise(dj_exc_type, dj_exc_value, traceback)
  File "/home/esd/Desktop/norm/lib64/python2.7/site-packages/django/db/backends/utils.py", line 64, in execute
    return self.cursor.execute(sql, params)
  File "/home/esd/Desktop/norm/lib64/python2.7/site-packages/sql_server/pyodbc/base.py", line 537, in execute
    return self.cursor.execute(sql, params)
django.db.utils.ProgrammingError: ('42S02', "[42S02] [Microsoft][ODBC Driver 17 for SQL Server][SQL Server]Invalid object name 'django_migrations'. (208) (SQLExecDirectW)")

Answer 1

也许您需要先运行"py manage.py makemigrations"，然后再运行"py manage.py migrate".

如果不是，那么为数据库添加特定的主机和端口可能是值得的。我在使用mysql的项目中使用的内容如下所示。

> DATABASES = {
>     'default': {
>         'ENGINE': 'django.db.backends.mysql',
>         'NAME': 'pkg',
>         'HOST': '127.0.0.1',
>         'PORT': '3306',
>         'USER': 'root',
>         'PASSWD': '',
>     } }

我不确定它是否会工作，但也许值得一试。