Help.... Django : Change Backend as mysql and create sample example using django ORM

[Sonali Vighne]

Hi,

I have tried a lot to change Django back-end as MySQL but not able to achieve this. 

please help for the same.

 

thanks in advance. :) 

[Andréas Kühne]

Hi,

Check out this tutorial:

https://www.digitalocean.com/community/tutorials/how-to-create-a-django-app-and-connect-it-to-a-database

It's hard to know what you need help with without any more detailed descriptions.

Regards,

Andréas

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[Sonali Vighne]

I will paste full error and stack trace here.

This is occurred when I am giving “python manage.py migrate” command

 

Operations to perform:

  Apply all migrations: admin, auth, contenttypes, sessions

Running migrations:

Traceback (most recent call last):

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\django\db\backends\utils.py", line 83, in _execute

    return self.cursor.execute(sql)

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\django\db\backends\mysql\base.py", line 71, in execute

    return self.cursor.execute(query, args)

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\MySQLdb\cursors.py", line 250, in execute

    self.errorhandler(self, exc, value)

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\MySQLdb\connections.py", line 50, in defaulterrorhandler

    raise errorvalue

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\MySQLdb\cursors.py", line 247, in execute

    res = self._query(query)

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\MySQLdb\cursors.py", line 411, in _query

    rowcount = self._do_query(q)

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\MySQLdb\cursors.py", line 374, in _do_query

    db.query(q)

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\MySQLdb\connections.py", line 277, in query

    _mysql.connection.query(self, query)

_mysql_exceptions.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 "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\django\db\migrations\recorder.py", line 55, in ensure_schema

    editor.create_model(self.Migration)

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\django\db\backends\base\schema.py", line 312, in create_model

    self.execute(sql, params or None)

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\django\db\backends\base\schema.py", line 133, in execute

    cursor.execute(sql, params)

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\django\db\backends\utils.py", line 100, in execute

    return super().execute(sql, params)

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\django\db\backends\utils.py", line 68, in execute

    return self._execute_with_wrappers(sql, params, many=False, executor=self._execute)

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\django\db\backends\utils.py", line 77, in _execute_with_wrappers

    return executor(sql, params, many, context)

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\django\db\backends\utils.py", line 85, in _execute

    return self.cursor.execute(sql, params)

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\django\db\utils.py", line 89, in __exit__

    raise dj_exc_value.with_traceback(traceback) from exc_value

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\django\db\backends\utils.py", line 83, in _execute

    return self.cursor.execute(sql)

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\django\db\backends\mysql\base.py", line 71, in execute

    return self.cursor.execute(query, args)

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\MySQLdb\cursors.py", line 250, in execute

    self.errorhandler(self, exc, value)

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\MySQLdb\connections.py", line 50, in defaulterrorhandler

    raise errorvalue

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\MySQLdb\cursors.py", line 247, in execute

    res = self._query(query)

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\MySQLdb\cursors.py", line 411, in _query

    rowcount = self._do_query(q)

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\MySQLdb\cursors.py", line 374, in _do_query

    db.query(q)

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\MySQLdb\connections.py", line 277, in query

    _mysql.connection.query(self, query)

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 syntax to use near '(6) NOT NULL)' at line 1")

 

During handling of the above exception, another exception occurred:

 

Traceback (most recent call last):

  File "D:\EclipsePython\DjangoMysql\manage.py", line 15, in <module>

    execute_from_command_line(sys.argv)

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\django\core\management\__init__.py", line 381, in execute_from_command_line

    utility.execute()

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\django\core\management\__init__.py", line 375, in execute

    self.fetch_command(subcommand).run_from_argv(self.argv)

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\django\core\management\base.py", line 316, in run_from_argv

    self.execute(*args, **cmd_options)

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\django\core\management\base.py", line 353, in execute

    output = self.handle(*args, **options)

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\django\core\management\base.py", line 83, in wrapped

    res = handle_func(*args, **kwargs)

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\django\core\management\commands\migrate.py", line 203, in handle

    fake_initial=fake_initial,

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\django\db\migrations\executor.py", line 91, in migrate

    self.recorder.ensure_schema()

  File "C:\Users\sonali_vighne\AppData\Local\Programs\Python\Python36\lib\site-packages\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 manual that corresponds to your MySQL server version for the right syntax to use near '(6) NOT NULL)' at line 1"))

Finished "D:\EclipsePython\DjangoMysql\manage.py migrate" execution.

 

 

 

 

 

Setting.py

 

 

INSTALLED_APPS = [

    'django.contrib.admin',

    'django.contrib.auth',

    'django.contrib.contenttypes',

    'django.contrib.sessions',

    'django.contrib.messages',

    'django.contrib.staticfiles',

    'mysqlApp' #this is app created

]

 

 

DATABASES = {

    'default': {

        'ENGINE': 'django.db.backends.mysql',

        'NAME': 'hospital',

        'USER': 'root',

        'PASSWORD': '',

        'HOST': 'localhost',

        'PORT': '3306'

[Tim Graham]

What version of Django, MySQL, and mysqlclient are you using?

[Sonali Vighne]

Django     -     2.1

mysql  community server -  6.0.8

mysqlclient - mysqlclient           1.3.12

[Tim Graham]

MySQL 6.0? I've never seen such a version... maybe that's the issue. Django 2.1 should work with MySQL 5.6, 5.7, and 8.0.

[Tom Forbes]

What version of MySQL are you running?

[Sonali Vighne]

MySQL  version    -  6.0.8-alpha-community

[Jason]

that's not mysql, that's the workbench program you use to interact with mysql.  and that version of workbench was released in 2013, which makes it severely out of date.  combined with the fact the mysql release at that time was 5.1, which again is severely out of date raises suspicions on whether you're actually working with up to date software.

[Tom Forbes]

Ensure you are using MySQL 5.6 or higher: https://docs.djangoproject.com/en/2.1/ref/databases/#version-support

To find your version run SELECT VERSION();

Finished "D:\EclipsePython\DjangoMysql\manage.pymigrate" execution.

 

 

 

 

 

Setting.py

 

 

INSTALLED_APPS = [

    'django.contrib.admin',

    'django.contrib.auth',

    'django.contrib.contenttypes',

    'django.contrib.sessions',

    'django.contrib.messages',

    'django.contrib.staticfiles',

    'mysqlApp' #this is app created

]

 

 

DATABASES = {

    'default': {

        'ENGINE': 'django.db.backends.mysql',

        'NAME': 'hospital',

        'USER': 'root',

        'PASSWORD': '',

        'HOST': 'localhost',

        'PORT': '3306'

    }

}

 

On Monday, August 27, 2018 at 5:38:28 PM UTC+5:30, Sonali Vighne wrote:

Hi,

I have tried a lot to change Django back-end as MySQL but not able to achieve this. 

please help for the same.

 

thanks in advance. :) 

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