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我在使用django-pyodbc,freetds和unixodbc在Django上登錄用戶時出現問題。我可以運行syncdb並與pyodbc連接，沒有任何問題。django-pyodbc：MSSQL unicode問題
完整的錯誤，我得到的是：
('42000', '[42000] [FreeTDS][SQL Server]Unicode data in a Unicode-only collation or ntext data cannot be sent to clients using DB-Library (such as ISQL) or ODBC version 3.7 or earlier. (4004) (SQLExecDirectW)
freetds的的conf文件：
[PS123]
host = <ip number>
port = 2254
tds version = 8.0
instance = T_INS01
client charset = UTF-8
# somebody suggested this had to be global so I put it here as well
[global]
client charset = UTF-8
tds version = 8.0
ODBCINST.INI
[ODBC]
Trace = Yes
TraceFile = /tmp/odbc.log
[FreeTDS]
Description = TDS driver (Sybase/MS SQL)
Driver = /usr/lib/x86_64-linux-gnu/odbc/libtdsodbc.so
Setup = /usr/lib/x86_64-linux-gnu/odbc/libtdsS.so
UsageCount = 1
tds_version = 8.0 # several people suggested using underscore
ODBC.INI
[PS123]
Driver = FreeTDS
Description = A wonderful description goes here
tds_version = 8.0 # also tried without underscore here
Database = database
Servername = PS123
Trace = Yes
TraceFile = /tmp/freetdssql.log
如果我登錄通過django-debug-toolbar's debugsqlshell用戶，我可以看到這些都是異常之前出現這種情況的查詢：
In [10]: login(request, user)
SELECT TOP 1 (1) AS [a] FROM [django_session] WHERE [django_session].[session_key] = magyul563p13z6e33t6rexesaxx1kszx [5.03ms]
INSERT INTO [django_session] ([session_key], [session_data], [expire_date])
VALUES (magyul563p13z6e33t6rexesaxx1kszx,
ZjgwN2E1NGZhNTE4YTI2ZWQxMDM3M2ZlZThiNWVlY2NlYTlmZWQ1YzqAAn1xAS4=, 2014-02-14 10:20:31+00:00) [3.23ms]
SELECT [django_session].[session_key], [django_session].[session_data], [django_session].[expire_date] FROM [django_session] WHERE [django_session].[session_key] = magyul563p13z6e33t6rexesaxx1kszx [1.56ms]
但是當我運行只用pyodbc像下面這些查詢：
import pyodbc
cnx = pyodbc.connect("DSN=PS123;UID=username;PWD=password")
cursor = cnx.cursor()
cursor.execute("SELECT TOP 1 (1) AS [a] FROM [django_session] WHERE [django_session].[session_key] = 'azozj51b9a5y9lnbq2b4hydhrryrplpz'")
cursor.execute("INSERT INTO [django_session] ([session_key], [session_data], [expire_date]) VALUES ('azozj51b9a5y9lnbq2b4hyd', 'ZwN2E1NGZhNTE4YTI2ZWQxMDM3M2ZlZThiNWVlY2NlYTlmZWQ1YzqAAn1x', '2014-02-15')")
cursor.execute("SELECT [django_session].[session_key], [django_session].[session_data], [django_session].[expire_date] FROM [django_session] WHERE [django_session].[session_key] = 'azozj51b9a5y9lnbq2b4hyd'")
它讀取和插入沒有任何問題。我唯一的問題是我必須刪除日期字符串中的時間和時區。我認爲這與我的問題無關。
這些都是我的Django的數據庫設置：
DATABASES = {
'default': {
'ENGINE': 'sql_server.pyodbc', # also tried django_pyodbc
'NAME': 'database',
'USER': 'username',
'PASSWORD': 'password',
'HOST': 'PS123',
'PORT': '2254',
'OPTIONS': {
'host_is_server': True
},
}
}
完全回溯：
Traceback:
File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py" in get_response
115. response = callback(request, *callback_args, **callback_kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/contrib/admin/sites.py" in wrapper
219. return self.admin_view(view, cacheable)(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/utils/decorators.py" in _wrapped_view
91. response = view_func(request, *args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/views/decorators/cache.py" in _wrapped_view_func
89. response = view_func(request, *args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/contrib/admin/sites.py" in inner
196. if not self.has_permission(request):
File "/usr/local/lib/python2.7/dist-packages/django/contrib/admin/sites.py" in has_permission
149. return request.user.is_active and request.user.is_staff
File "/usr/local/lib/python2.7/dist-packages/django/utils/functional.py" in inner
204. self._setup()
File "/usr/local/lib/python2.7/dist-packages/django/utils/functional.py" in _setup
270. self._wrapped = self._setupfunc()
File "/usr/local/lib/python2.7/dist-packages/django/contrib/auth/middleware.py" in <lambda>
18. request.user = SimpleLazyObject(lambda: get_user(request))
File "/usr/local/lib/python2.7/dist-packages/django/contrib/auth/middleware.py" in get_user
10. request._cached_user = auth.get_user(request)
File "/usr/local/lib/python2.7/dist-packages/django/contrib/auth/__init__.py" in get_user
136. user_id = request.session[SESSION_KEY]
File "/usr/local/lib/python2.7/dist-packages/django/contrib/sessions/backends/base.py" in __getitem__
44. return self._session[key]
File "/usr/local/lib/python2.7/dist-packages/django/contrib/sessions/backends/base.py" in _get_session
167. self._session_cache = self.load()
File "/usr/local/lib/python2.7/dist-packages/django/contrib/sessions/backends/db.py" in load
18. expire_date__gt=timezone.now()
File "/usr/local/lib/python2.7/dist-packages/django/db/models/manager.py" in get
143. return self.get_query_set().get(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/query.py" in get
398. num = len(clone)
File "/usr/local/lib/python2.7/dist-packages/django/db/models/query.py" in __len__
106. self._result_cache = list(self.iterator())
File "/usr/local/lib/python2.7/dist-packages/django/db/models/query.py" in iterator
317. for row in compiler.results_iter():
File "/usr/local/lib/python2.7/dist-packages/django/db/models/sql/compiler.py" in results_iter
775. for rows in self.execute_sql(MULTI):
File "/usr/local/lib/python2.7/dist-packages/django/db/models/sql/compiler.py" in execute_sql
846. cursor.execute(sql, params)
File "/usr/local/lib/python2.7/dist-packages/django/db/backends/util.py" in execute
41. return self.cursor.execute(sql, params)
File "/usr/local/lib/python2.7/dist-packages/sql_server/pyodbc/base.py" in execute
396. raise utils.DatabaseError(*e.args)
Exception Type: DatabaseError at /admin/
Exception Value: ('42000', '[42000] [FreeTDS][SQL Server]Unicode data in a Unicode-only collation or ntext data cannot be sent to clients using DB-Library (such as ISQL) or ODBC version 3.7 or earlier. (4004) (SQLExecDirectW)')
最佳答案，它解決了與Django 1.7，freetds和pyodbc連接SQL Server 2012時的字符編碼問題。應該接受這個答案！ – digz6666