如何解决Python3.6+Django2.2使用MySQL数据库时出现的系列问题

[Liqurior_ppp]

settings.py 的 DATABASES属性
DATABASES = {
    'default': {
        # 'ENGINE': 'django.db.backends.sqlite3',
        # 'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),

        'ENGINE': 'django.db.backends.mysql',
        'HOST': '127.0.0.1',
        'PORT': '3306',
        'NAME': 'polls',
        'USER': 'root',
        'PASSWORD': 'root',
        'OPTIONS': {
            'init_command': 'SET sql_mode="STRICT_TRANS_TABLES"',
        }
    }
}

__init__.py 代码
import pymysql
pymysql.install_as_MySQLdb()

执行python manage.py makemigrations
显示 No Changes detected
执行python manage.py migrate
出错：

Operations to perform:
  Apply all migrations: admin, auth, contenttypes, sessions
Running migrations:
Traceback (most recent call last):
  File "G:\Anaconda3\lib\site-packages\django-2.2.dev20180727211500-py3.6.egg\django\db\backends\utils.py", line 83, in _execute
    return self.cursor.execute(sql)
  File "G:\Anaconda3\lib\site-packages\django-2.2.dev20180727211500-py3.6.egg\django\db\backends\mysql\base.py", line 71, in execute
    return self.cursor.execute(query, args)
  File "G:\Anaconda3\lib\site-packages\pymysql\cursors.py", line 170, in execute
    result = self._query(query)
  File "G:\Anaconda3\lib\site-packages\pymysql\cursors.py", line 328, in _query
    conn.query(q)
  File "G:\Anaconda3\lib\site-packages\pymysql\connections.py", line 516, in query
    self._affected_rows = self._read_query_result(unbuffered=unbuffered)
  File "G:\Anaconda3\lib\site-packages\pymysql\connections.py", line 727, in _read_query_result
    result.read()
  File "G:\Anaconda3\lib\site-packages\pymysql\connections.py", line 1066, in read
    first_packet = self.connection._read_packet()
  File "G:\Anaconda3\lib\site-packages\pymysql\connections.py", line 683, in _read_packet
    packet.check_error()
  File "G:\Anaconda3\lib\site-packages\pymysql\protocol.py", line 220, in check_error
    err.raise_mysql_exception(self._data)
  File "G:\Anaconda3\lib\site-packages\pymysql\err.py", line 109, in raise_mysql_exception
    raise errorclass(errno, errval)
pymysql.err.ProgrammingError: (1064, "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax
to use near '(6) NOT NULL)' at line 1")

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "G:\Anaconda3\lib\site-packages\django-2.2.dev20180727211500-py3.6.egg\django\db\migrations\recorder.py", line 55, in ensure_schema
    editor.create_model(self.Migration)
  File "G:\Anaconda3\lib\site-packages\django-2.2.dev20180727211500-py3.6.egg\django\db\backends\base\schema.py", line 314, in create_model
    self.execute(sql, params or None)
  File "G:\Anaconda3\lib\site-packages\django-2.2.dev20180727211500-py3.6.egg\django\db\backends\base\schema.py", line 134, in execute
    cursor.execute(sql, params)
  File "G:\Anaconda3\lib\site-packages\django-2.2.dev20180727211500-py3.6.egg\django\db\backends\utils.py", line 100, in execute
    return super().execute(sql, params)
  File "G:\Anaconda3\lib\site-packages\django-2.2.dev20180727211500-py3.6.egg\django\db\backends\utils.py", line 68, in execute
    return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)
  File "G:\Anaconda3\lib\site-packages\django-2.2.dev20180727211500-py3.6.egg\django\db\backends\utils.py", line 77, in _execute_with_wrappers
    return executor(sql, params, many, context)
  File "G:\Anaconda3\lib\site-packages\django-2.2.dev20180727211500-py3.6.egg\django\db\backends\utils.py", line 85, in _execute
    return self.cursor.execute(sql, params)
  File "G:\Anaconda3\lib\site-packages\django-2.2.dev20180727211500-py3.6.egg\django\db\utils.py", line 89, in __exit__
    raise dj_exc_value.with_traceback(traceback) from exc_value
  File "G:\Anaconda3\lib\site-packages\django-2.2.dev20180727211500-py3.6.egg\django\db\backends\utils.py", line 83, in _execute
    return self.cursor.execute(sql)
  File "G:\Anaconda3\lib\site-packages\django-2.2.dev20180727211500-py3.6.egg\django\db\backends\mysql\base.py", line 71, in execute
    return self.cursor.execute(query, args)
  File "G:\Anaconda3\lib\site-packages\pymysql\cursors.py", line 170, in execute
    result = self._query(query)
  File "G:\Anaconda3\lib\site-packages\pymysql\cursors.py", line 328, in _query
    conn.query(q)
  File "G:\Anaconda3\lib\site-packages\pymysql\connections.py", line 516, in query
    self._affected_rows = self._read_query_result(unbuffered=unbuffered)
  File "G:\Anaconda3\lib\site-packages\pymysql\connections.py", line 727, in _read_query_result
    result.read()
  File "G:\Anaconda3\lib\site-packages\pymysql\connections.py", line 1066, in read
    first_packet = self.connection._read_packet()
  File "G:\Anaconda3\lib\site-packages\pymysql\connections.py", line 683, in _read_packet
    packet.check_error()
  File "G:\Anaconda3\lib\site-packages\pymysql\protocol.py", line 220, in check_error
    err.raise_mysql_exception(self._data)
  File "G:\Anaconda3\lib\site-packages\pymysql\err.py", line 109, in raise_mysql_exception
    raise errorclass(errno, errval)
django.db.utils.ProgrammingError: (1064, "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syn
tax to use near '(6) NOT NULL)' at line 1")

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "manage.py", line 15, in <module>
    execute_from_command_line(sys.argv)
  File "G:\Anaconda3\lib\site-packages\django-2.2.dev20180727211500-py3.6.egg\django\core\management\__init__.py", line 381, in execute_from_command_line
    utility.execute()
  File "G:\Anaconda3\lib\site-packages\django-2.2.dev20180727211500-py3.6.egg\django\core\management\__init__.py", line 375, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "G:\Anaconda3\lib\site-packages\django-2.2.dev20180727211500-py3.6.egg\django\core\management\base.py", line 317, in run_from_argv
    self.execute(*args, **cmd_options)
  File "G:\Anaconda3\lib\site-packages\django-2.2.dev20180727211500-py3.6.egg\django\core\management\base.py", line 354, in execute
    output = self.handle(*args, **options)
  File "G:\Anaconda3\lib\site-packages\django-2.2.dev20180727211500-py3.6.egg\django\core\management\base.py", line 83, in wrapped
    res = handle_func(*args, **kwargs)
  File "G:\Anaconda3\lib\site-packages\django-2.2.dev20180727211500-py3.6.egg\django\core\management\commands\migrate.py", line 204, in handle
    fake_initial=fake_initial,
  File "G:\Anaconda3\lib\site-packages\django-2.2.dev20180727211500-py3.6.egg\django\db\migrations\executor.py", line 91, in migrate
    self.recorder.ensure_schema()
  File "G:\Anaconda3\lib\site-packages\django-2.2.dev20180727211500-py3.6.egg\django\db\migrations\recorder.py", line 57, in ensure_schema
    raise MigrationSchemaMissing("Unable to create the django_migrations table (%s)" % exc)
django.db.migrations.exceptions.MigrationSchemaMissing: Unable to create the django_migrations table ((1064, "You have an error in your SQL syntax; check the ma
nual that corresponds to your MySQL server version for the right syntax to use near '(6) NOT NULL)' at line 1"))

[DemSephiroth]

https://blog.csdn.net/weixin_30480583/article/details/99008811 https://blog.csdn.net/weixin_30480583/article/details/99008811 LZ参考这个帖子，亲测有用，最后query的decode改encode是在146行，在迁移前先创建对应的数据库

[Urila]

Django2.1 版本不再支持 MySQL5.5 更新升级一下 MySQL 版本就解决了。