关闭更新 - 我想我会通过它，代表我有点愚蠢。
python manage.py inspectdb＆gt; models.py
我忘记将输出传递给文件了！
我已经将它转移到我的app / models.py中，现在我只是试图让它从那里运行但是更进一步。
我正在尝试让django针对SQL Server 2008 R2服务器运行。
我已经找到了FreeTDS / unixODBC连接。我可以成功地对数据库进行isql和tsql查询。
我已经能够直接在python中建立连接 -
import pyodbc
cnxn = pyodbc.connect('DRIVER=FreeTDS;SERVER=servername;DATABASE=dbname;UID=user;PWD=pass;TDS_Version=8.0;')
cursor = cnxn.cursor()
result = cursor.execute("select name from tablea where name = 'hello'")
print result
如果我在django shell中执行了inspectdb，那很好。它返回70多个表格，它们的布局完全正常。
一旦我尝试做一个syndb，它就会溢出以下错误 -
Creating tables ...
Creating table django_admin_log
Creating table auth_permission
Creating table auth_group_permissions
Creating table auth_group
Creating table auth_user_groups
Creating table auth_user_user_permissions
Creating table auth_user
Creating table django_content_type
Creating table django_session
Traceback (most recent call last):
File "manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "/usr/local/lib/python2.6/dist-packages/django/core/management/__init__.py", line 399, in execute_from_command_line
utility.execute()
File "/usr/local/lib/python2.6/dist-packages/django/core/management/__init__.py", line 392, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/usr/local/lib/python2.6/dist-packages/django/core/management/base.py", line 242, in run_from_argv
self.execute(*args, **options.__dict__)
File "/usr/local/lib/python2.6/dist-packages/django/core/management/base.py", line 285, in execute
output = self.handle(*args, **options)
File "/usr/local/lib/python2.6/dist-packages/django/core/management/base.py", line 415, in handle
return self.handle_noargs(**options)
File "/usr/local/lib/python2.6/dist-packages/django/core/management/commands/syncdb.py", line 112, in handle_noargs
emit_post_sync_signal(created_models, verbosity, interactive, db)
File "/usr/local/lib/python2.6/dist-packages/django/core/management/sql.py", line 216, in emit_post_sync_signal
interactive=interactive, db=db)
File "/usr/local/lib/python2.6/dist-packages/django/dispatch/dispatcher.py", line 185, in send
response = receiver(signal=self, sender=sender, **named)
File "/usr/local/lib/python2.6/dist-packages/django/contrib/auth/management/__init__.py", line 82, in create_permissions
ctype = ContentType.objects.db_manager(db).get_for_model(klass)
File "/usr/local/lib/python2.6/dist-packages/django/contrib/contenttypes/models.py", line 47, in get_for_model
defaults = {'name': smart_text(opts.verbose_name_raw)},
File "/usr/local/lib/python2.6/dist-packages/django/db/models/manager.py", line 154, in get_or_create
return self.get_queryset().get_or_create(**kwargs)
File "/usr/local/lib/python2.6/dist-packages/django/db/models/query.py", line 373, in get_or_create
return self.get(**lookup), False
File "/usr/local/lib/python2.6/dist-packages/django/db/models/query.py", line 301, in get
num = len(clone)
File "/usr/local/lib/python2.6/dist-packages/django/db/models/query.py", line 77, in __len__
self._fetch_all()
File "/usr/local/lib/python2.6/dist-packages/django/db/models/query.py", line 854, in _fetch_all
self._result_cache = list(self.iterator())
File "/usr/local/lib/python2.6/dist-packages/django/db/models/query.py", line 220, in iterator
for row in compiler.results_iter():
File "/usr/local/lib/python2.6/dist-packages/django/db/models/sql/compiler.py", line 710, in results_iter
for rows in self.execute_sql(MULTI):
File "/usr/local/lib/python2.6/dist-packages/django/db/models/sql/compiler.py", line 771, in execute_sql
sql, params = self.as_sql()
File "/usr/local/lib/python2.6/dist-packages/sql_server/pyodbc/compiler.py", line 48, in as_sql
self._get_ordering(out_cols, supports_offset_clause or not do_offset)
File "/usr/local/lib/python2.6/dist-packages/sql_server/pyodbc/compiler.py", line 154, in _get_ordering
ordering, ordering_group_by = self.get_ordering()
ValueError: too many values to unpack
类似地，如果我尝试在django中进行查询，就像这样 -
from myapp.models import tablea
tablea.objects.filter(id=5)
失败并显示以下错误消息 -
Traceback (most recent call last):
File "<console>", line 1, in <module>
File "/usr/local/lib/python2.6/dist-packages/django/db/models/query.py", line 71, in __repr__
data = list(self[:REPR_OUTPUT_SIZE + 1])
File "/usr/local/lib/python2.6/dist-packages/django/db/models/query.py", line 96, in __iter__
self._fetch_all()
File "/usr/local/lib/python2.6/dist-packages/django/db/models/query.py", line 854, in _fetch_all
self._result_cache = list(self.iterator())
File "/usr/local/lib/python2.6/dist-packages/django/db/models/query.py", line 220, in iterator
for row in compiler.results_iter():
File "/usr/local/lib/python2.6/dist-packages/django/db/models/sql/compiler.py", line 710, in results_iter
for rows in self.execute_sql(MULTI):
File "/usr/local/lib/python2.6/dist-packages/django/db/models/sql/compiler.py", line 771, in execute_sql
sql, params = self.as_sql()
File "/usr/local/lib/python2.6/dist-packages/sql_server/pyodbc/compiler.py", line 48, in as_sql
self._get_ordering(out_cols, supports_offset_clause or not do_offset)
File "/usr/local/lib/python2.6/dist-packages/sql_server/pyodbc/compiler.py", line 154, in _get_ordering
ordering, ordering_group_by = self.get_ordering()
ValueError: too many values to unpack
我不相信这些错误与此处发现的其他线程有关 -
ValueError: Too many values to unpack Django
但我不是专家，所以我错了。我知道我确实尝试更改密码，它不会让我连接类似的错误消息 -
>>> u = User.objects.get(username="user")
Traceback (most recent call last):
File "<console>", line 1, in <module>
File "/usr/local/lib/python2.6/dist-packages/django/db/models/manager.py", line 151, in get
return self.get_queryset().get(*args, **kwargs)
File "/usr/local/lib/python2.6/dist-packages/django/db/models/query.py", line 301, in get
num = len(clone)
File "/usr/local/lib/python2.6/dist-packages/django/db/models/query.py", line 77, in __len__
self._fetch_all()
File "/usr/local/lib/python2.6/dist-packages/django/db/models/query.py", line 854, in _fetch_all
self._result_cache = list(self.iterator())
File "/usr/local/lib/python2.6/dist-packages/django/db/models/query.py", line 220, in iterator
for row in compiler.results_iter():
File "/usr/local/lib/python2.6/dist-packages/django/db/models/sql/compiler.py", line 710, in results_iter
for rows in self.execute_sql(MULTI):
File "/usr/local/lib/python2.6/dist-packages/django/db/models/sql/compiler.py", line 771, in execute_sql
sql, params = self.as_sql()
File "/usr/local/lib/python2.6/dist-packages/sql_server/pyodbc/compiler.py", line 48, in as_sql
self._get_ordering(out_cols, supports_offset_clause or not do_offset)
File "/usr/local/lib/python2.6/dist-packages/sql_server/pyodbc/compiler.py", line 154, in _get_ordering
ordering, ordering_group_by = self.get_ordering()
ValueError: too many values to unpack
编辑添加 - 在进行查询时，我的模型定义如下 -
from django.db import models
# Create your models here.
class tablea(models.Model):
tablea_id = models.IntegerField()
tablea_name = models.CharField(max_length=32)
tablea_duration = models.IntegerField()
class Meta:
db_table = u'tablea'
def __unicode__(self):
return self.tablea_name, tablea_duration
编辑添加我已完成全新的重新安装。擦拭VM并使其恢复生机。以下是已完成步骤的细分
apt-get install gcc g ++ make python-dev
下载unixODBC
tar xzvf unixODBC-2.3.2.tar.gz
./配置
请
makeinstall
下载FreeTDS
tar xzvf freetds-stable.tgz
./ configure --with-tdsver = 8.0 --with-unixodbc = usr / local
请
make install
ldconfig -v
ODBC.INI
[mssql]
Description = MSSQL Server
Driver = freetds
Database = database
Server = server
Port = 1433
TDS_Version = 8.0
ODBCINST.INI
[freetds]
Description = MS SQL database access with Free TDS
Driver = /usr/local/lib/libtdsodbc.so
Setup = /usr/local/lib/libtdsS.so
UsageCount = 1
freetds.conf
[mssql]
host = server
port = 1433
tds version = 8.0
tsql -S mssql -U user -P password works
isql -v mssql用户密码有效（出于某种原因简单的isql -v mssql没有）
apt-get install python-setuptools
easy_install pip
pip install pyodbc
pip install Django == 1.6
pip install django-pyodbc-azure
settings.py
DATABASES = {
'default': {
'ENGINE': 'sql_server.pyodbc',
'HOST': "server\instance",
'USER': "username",
'PASSWORD': "password",
'NAME': "database",
'OPTIONS': {
'host_is_server': True,
'driver': 'FreeTDS',
'dsn': 'MSSQL',
},
}
}
答案 0 :(得分：3)
这是版本不兼容问题。
Django 1.6改变了django.db.models.sql.compiler.SQLCompiler.get_ordering返回的值类型。它返回 3元素元组，但pyodbc仅解包两个元素。
如果您查看Django 1.5 version，您会发现它曾经像pyodbc所期望的那样返回 2元素元组。