无法使用Djangopyodb从Django查询SQL Server

Question

我正在尝试使用manage.py syncdb将iis7上远程运行的sqlserver2008r2数据库与在windows7上运行python3.3的django1.6应用程序同步。但是我遇到了错误

TypeError: The first argument to execute must be a string or unicode query.

我已经安装了django pyodbc0.2.3和pyodbc3.0.7设置.pyDATABASES作为

^{pr2}$

您可能会猜到，USER和{}被省略了，因为我需要Integrated_Security=Yes和{}作为连接。OPTIONS似乎必须是非空的，因为django pyodbc初始化类DatabaseWrapper的方式，即使{}在Windows上是不相关的。在

我收到的全部错误是：

Traceback (most recent call last):
  File "Z:\python\ns_reports_server\manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "C:\Python33\lib\site-packages\django-1.6.1-py3.3.egg\django\core\management\__init__.py", line 399, in execute_from_command_line
    utility.execute()
  File "C:\Python33\lib\site-packages\django-1.6.1-py3.3.egg\django\core\management\__init__.py", line 392, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "C:\Python33\lib\site-packages\django-1.6.1-py3.3.egg\django\core\management\base.py", line 242, in run_from_argv
    self.execute(*args, **options.__dict__)
  File "C:\Python33\lib\site-packages\django-1.6.1-py3.3.egg\django\core\management\base.py", line 285, in execute
    output = self.handle(*args, **options)
  File "C:\Python33\lib\site-packages\django-1.6.1-py3.3.egg\django\core\management\base.py", line 415, in handle
    return self.handle_noargs(**options)
  File "C:\Python33\lib\site-packages\django-1.6.1-py3.3.egg\django\core\management\commands\syncdb.py", line 57, in handle_noargs
    cursor = connection.cursor()
  File "C:\Python33\lib\site-packages\django-1.6.1-py3.3.egg\django\db\backends\__init__.py", line 157, in cursor
    cursor = self.make_debug_cursor(self._cursor())
  File "C:\Python33\lib\site-packages\django_pyodbc-0.2.3-py3.3.egg\django_pyodbc\base.py", line 290, in _cursor
  File "C:\Python33\lib\site-packages\django_pyodbc-0.2.3-py3.3.egg\django_pyodbc\operations.py", line 31, in _get_sql_server_ver
  File "C:\Python33\lib\site-packages\django-1.6.1-py3.3.egg\django\db\backends\util.py", line 69, in execute
    return super(CursorDebugWrapper, self).execute(sql, params)
  File "C:\Python33\lib\site-packages\django-1.6.1-py3.3.egg\django\db\backends\util.py", line 51, in execute
    return self.cursor.execute(sql)
  File "C:\Python33\lib\site-packages\django_pyodbc-0.2.3-py3.3.egg\django_pyodbc\base.py", line 410, in execute
TypeError: The first argument to execute must be a string or unicode query.

如果您从顶部查看第十次调用的源代码，django_pyodbc/operations.py正在查询SQL Server版本的连接

cur.execute("SELECT CAST(SERVERPROPERTY('ProductVersion') as varchar)")

然而，在调用堆栈的末尾，这个要执行的sql已经消失了。django_pyodbc/base.py有

return self.cursor.execute(sql, params)

其第一个参数未被识别为“字符串或unicode查询”。在

Python、django和sqlserver对我来说都是新的，所以答案可能很明显，但我一辈子都无法解决。干杯。在

Answer 1

您也可以在配置选项中修复此问题。我为此挣扎了一段时间。尝试将您的数据库更改为1.6版的配置：

DATABASES = {
    'default': {
        'ENGINE': 'django_pyodbc',
        'NAME': 'db_name',
        'USER': 'db_user',
        'PASSWORD': 'your_password',            
        'HOST': 'database.domain.com,1433',
        'PORT': '1433',
        'OPTIONS': {
            'host_is_server': True,
            'autocommit': True,
            'unicode_results': True,
            'extra_params': 'tds_version=8.0'
        },
    }
}

如果您在Windows上，“extra_params”将被忽略，但它使它可以移植到Linux。在