Re: Django : Change Backend as mysql and create sample example using django ORM
Raghavendrachari k
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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Tim Graham
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'
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parmeshwar deharkar
Raghavendrachari k
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Sonali Vighne
Hi,
Below is the my models.py
from django.db import models
#from django_mysql.models import Model
class Category(models.Model):
name = models.CharField(max_length=128, unique=True)
def __unicode__(self):
return self.name
class Page(models.Model):
category = models.ForeignKey(Category, on_delete=models.CASCADE,)
title = models.CharField(max_length=128)
url = models.URLField()
views = models.IntegerField()
def __unicode__(self):
return self.title
From: django-d...@googlegroups.com <django-d...@googlegroups.com>
On Behalf Of Raghavendrachari k
Sent: 29 August 2018 09:42
To: django-d...@googlegroups.com
Subject: Re: Django : Change Backend as mysql and create sample example using django ORM
Hi Sonali,
To view this discussion on the web visit https://groups.google.com/d/msgid/django-developers/CAHjM6E5Ky9BDUFi4V887V%2BkMasb6%2BZJ8V7nHKCYqgeUAun0FQA%40mail.gmail.com.