我花了好几个小时试图在我的Windows 7机器上运行一个流浪的django开发环境。
到目前为止，我有：
在新的django安装中，当我尝试运行python manage.py migrate时，出现以下错误：
Operations to perform:
Apply all migrations: sessions, auth, contenttypes, admin
Running migrations:
Rendering model states... DONE
Applying contenttypes.0001_initial...Traceback (most recent call last):
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/mysql/connector/django/base.py", line 177, in _execute_wrapper
return method(query, args)
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/mysql/connector/cursor.py", line 515, in execute
self._handle_result(self._connection.cmd_query(stmt))
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/mysql/connector/cursor.py", line 434, in _handle_result
self._handle_noresultset(result)
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/mysql/connector/cursor.py", line 404, in _handle_noresultset
self._warnings[0][1], self._warnings[0][2])
mysql.connector.errors.DatabaseError: 1265: Data truncated for column 'applied' at row 1
在处理上述异常期间，发生了另一个异常：
Traceback (most recent call last):
File "manage.py", line 10, in <module>
execute_from_command_line(sys.argv)
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/django/core/management/__init__.py", line 350, in execute_from_command_line
utility.execute()
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/django/core/management/__init__.py", line 342, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/django/core/management/base.py", line 348, in run_from_argv
self.execute(*args, **cmd_options)
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/django/core/management/base.py", line 399, in execute
output = self.handle(*args, **options)
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/django/core/management/commands/migrate.py", line 200, in handle
executor.migrate(targets, plan, fake=fake, fake_initial=fake_initial)
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/django/db/migrations/executor.py", line 92, in migrate
self._migrate_all_forwards(plan, full_plan, fake=fake, fake_initial=fake_initial)
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/django/db/migrations/executor.py", line 121, in _migrate_all_forwards
state = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial)
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/django/db/migrations/executor.py", line 204, in apply_migration
self.recorder.record_applied(migration.app_label, migration.name)
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/django/db/migrations/recorder.py", line 73, in record_applied
self.migration_qs.create(app=app, name=name)
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/django/db/models/query.py", line 401, in create
obj.save(force_insert=True, using=self.db)
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/django/db/models/base.py", line 700, in save
force_update=force_update, update_fields=update_fields)
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/django/db/models/base.py", line 728, in save_base
updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields)
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/django/db/models/base.py", line 812, in _save_table
result = self._do_insert(cls._base_manager, using, fields, update_pk, raw)
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/django/db/models/base.py", line 851, in _do_insert
using=using, raw=raw)
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/django/db/models/manager.py", line 122, in manager_method
return getattr(self.get_queryset(), name)(*args, **kwargs)
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/django/db/models/query.py", line 1039, in _insert
return query.get_compiler(using=using).execute_sql(return_id)
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/django/db/models/sql/compiler.py", line 1064, in execute_sql
cursor.execute(sql, params)
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/django/db/backends/utils.py", line 79, in execute
return super(CursorDebugWrapper, self).execute(sql, params)
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/django/db/backends/utils.py", line 64, in execute
return self.cursor.execute(sql, params)
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/mysql/connector/django/base.py", line 227, in execute
return self._execute_wrapper(self.cursor.execute, query, new_args)
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/mysql/connector/django/base.py", line 195, in _execute_wrapper
utils.DatabaseError(err.msg), sys.exc_info()[2])
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/django/utils/six.py", line 685, in reraise
raise value.with_traceback(tb)
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/mysql/connector/django/base.py", line 177, in _execute_wrapper
return method(query, args)
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/mysql/connector/cursor.py", line 515, in execute
self._handle_result(self._connection.cmd_query(stmt))
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/mysql/connector/cursor.py", line 434, in _handle_result
self._handle_noresultset(result)
File "/home/vagrant/djangoenv/lib/python3.4/site-packages/mysql/connector/cursor.py", line 404, in _handle_noresultset
self._warnings[0][1], self._warnings[0][2])
django.db.utils.DatabaseError: Data truncated for column 'applied' at row 1
我找不到任何有错误的错误。有人有什么想法吗？
答案 0 :(得分：0)
事实证明问题不是如何定义表或列，所以只看表或列定义并不会对你有任何好处*。
在[project_name]/settings.py文件中，请确保在...
DATABASES = { ...
... ENGINE属性设置为django.db.backends.mysql，而不是mysql.connector.django。
*虽然，您应该确保
applied的列类型为DATETIME(6)，这不应该是一个问题，因为这是Django给出的默认值，所以除非你以某种方式改变它，否则你应该没事。如果 希望查找数据类型，则表格为
django_migrations。
答案 1 :(得分：-1)
如果您将12345678901234567890存储到INT，它将被截断。
如果您将'asdfasdfasdf'存储到VARCHAR(5)，它将被截断。
查看表格定义和数据。 你可以解决这个问题。