python - Django 和 django-pyodbc 错误 NotImplementedError SQL Server v8 is not support

Question

我正在使用 Django 和 PyODBC 连接到 SQL Server 2000 数据库，但出现此错误:

异常类型:NotImplementedError

异常值:不支持 SQL Server v8。

我的回溯:

Environment:


Request Method: POST
Request URL: http://localhost/sistemas/cadastro_paciente/

Django Version: 1.10.5
Python Version: 2.7.12
Installed Applications:
['admin_tools',
 'admin_tools.theming',
 'admin_tools.menu',
 'admin_tools.dashboard',
 'django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'cadastro',
 'fenotipo',
 'cuser']
Installed Middleware:
['django.middleware.security.SecurityMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'cuser.middleware.CuserMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware']



Traceback:

File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/exception.py" in inner
  39.             response = get_response(request)

File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py" in _get_response
  187.                 response = self.process_exception_by_middleware(e, request)

File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py" in _get_response
  185.                 response = wrapped_callback(request, *callback_args, **callback_kwargs)

File "/usr/local/lib/python2.7/dist-packages/django/views/decorators/csrf.py" in wrapped_view
  58.         return view_func(*args, **kwargs)

File "/usr/local/lib/python2.7/dist-packages/django/contrib/auth/decorators.py" in _wrapped_view
  23.                 return view_func(request, *args, **kwargs)

File "/var/www/sistemas/cadastro/views.py" in cadastro_paciente
  1297.             if pacienteDB and pacienteHGP:

File "/usr/local/lib/python2.7/dist-packages/django/db/models/query.py" in __nonzero__
  264.         return type(self).__bool__(self)

File "/usr/local/lib/python2.7/dist-packages/django/db/models/query.py" in __bool__
  260.         self._fetch_all()

File "/usr/local/lib/python2.7/dist-packages/django/db/models/query.py" in _fetch_all
  1087.             self._result_cache = list(self.iterator())

File "/usr/local/lib/python2.7/dist-packages/django/db/models/query.py" in __iter__
  54.         results = compiler.execute_sql()

File "/usr/local/lib/python2.7/dist-packages/django/db/models/sql/compiler.py" in execute_sql
  824.             sql, params = self.as_sql()

File "/usr/local/lib/python2.7/dist-packages/sql_server/pyodbc/compiler.py" in as_sql
  82.             supports_offset_clause = self.connection.sql_server_version >= 2012

File "/usr/local/lib/python2.7/dist-packages/django/utils/functional.py" in __get__
  35.         res = instance.__dict__[self.name] = self.func(instance)

File "/usr/local/lib/python2.7/dist-packages/sql_server/pyodbc/base.py" in sql_server_version
  390.         with self.temporary_connection() as cursor:

File "/usr/lib/python2.7/contextlib.py" in __enter__
  17.             return self.gen.next()

File "/usr/local/lib/python2.7/dist-packages/django/db/backends/base/base.py" in temporary_connection
  564.         cursor = self.cursor()

File "/usr/local/lib/python2.7/dist-packages/django/db/backends/base/base.py" in cursor
  231.             cursor = self.make_debug_cursor(self._cursor())

File "/usr/local/lib/python2.7/dist-packages/django/db/backends/base/base.py" in _cursor
  204.         self.ensure_connection()

File "/usr/local/lib/python2.7/dist-packages/django/db/backends/base/base.py" in ensure_connection
  199.                 self.connect()

File "/usr/local/lib/python2.7/dist-packages/django/db/backends/base/base.py" in connect
  173.         self.init_connection_state()

File "/usr/local/lib/python2.7/dist-packages/sql_server/pyodbc/base.py" in init_connection_state
  349.         if self.sql_server_version < 2008:

File "/usr/local/lib/python2.7/dist-packages/django/utils/functional.py" in __get__
  35.         res = instance.__dict__[self.name] = self.func(instance)

File "/usr/local/lib/python2.7/dist-packages/sql_server/pyodbc/base.py" in sql_server_version
  395.                 raise NotImplementedError('SQL Server v%d is not supported.' % ver)

Exception Type: NotImplementedError at /cadastro_paciente/
Exception Value: SQL Server v8 is not supported.

我的odbc.ini:

[HGP]
Driver = FREETDS
Server = "IP"
Port = 1433
Database = database
Driver = /usr/local/lib/libtdsodbc.so
UsageCount = 1

我的 freetds.conf

[HGP]
database = database
host = "IP"
port = 1433
tds version = 8.0

odbcinst.int 上的驱动程序配置

[FREETDS]
Description = FreeTDS
Driver = /usr/lib/i386-linux-gnu/odbc/libtdsodbc.so
Setup = /usr/lib/i386-linux-gnu/odbc/libtdsS.so
UsageCount = 1

我的settings.py

'hgp': {
        'ENGINE': 'sql_server.pyodbc', # Add 'postgresql_psycopg2', 'postgresql', 'mysql', 'sqlite3' or 'oracle'.
        'NAME': 'hemovida',            # Or path to database file if using sqlite3.
        'USER': 'sa',                  # Not used with sqlite3.
        'PASSWORD': '',                # Not used with sqlite3.
        'HOST': 'IP',         # Set to empty string for localhost. Not used with sqlite3.
        'PORT': '',

        'OPTIONS': {
                'driver': 'FREETDS',
                'MARS_Connection': False,
                'dsn' : 'HGP',
            },
    },

我的查询

pacienteHGP = Paciente_Hemovida.objects.using('hgp').filter(paciente=postPaciente)

Answer 1

如前所述，使用 SQL Server 2000 确实是一个坏主意；它没有从 Microsoft 获得任何支持、错误修复，或者最重要的是，安全补丁。

也就是说，如果您使用 django-pyodbc-azure，您也许可以对其进行猴子修补以使其正常工作。请参阅这一行:

https://github.com/michiya/django-pyodbc-azure/blob/azure-1.10/sql_server/pyodbc/base.py#L145

将 8: 2000, 添加到 _sql_server_version 字典中:

_sql_server_versions = {
    8: 2000,
    9: 2005,
    10: 2008,
    11: 2012,
    12: 2014,
    13: 2016,
    14: 2017,
}

我无法保证这是否有效，但欢迎您尝试。这应该可以帮助您克服遇到的错误。

您还需要修改您的 freetds.conf，因为 8.0 不是有效的 TDS 版本:

[HGP]
database = database
host = "IP"
port = 1433
tds version = 7.1

来源:http://www.freetds.org/userguide/choosingtdsprotocol.htm

祝你好运，我再次强烈建议升级到 SQL Server 的现代版本。