django.db.utils.InternalError: (1050, "Table 'django_content_type' already exists")
I just copied a project from my friend, when I run makemirations it runs properly. But for -
python3 manage.py migrate
it gives this error -
Operations to perform:Apply all migrations: admin, auth, balancesheet, contenttypes, dynapp, pandl2, sessions, trialbal2
Running migrations:Applying contenttypes.0001_initial...Traceback (most recent call last):File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/django/db/backends/utils.py", line 82, in _executereturn self.cursor.execute(sql)File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/django/db/backends/mysql/base.py", line 74, in executereturn self.cursor.execute(query, args)File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/pymysql/cursors.py", line 170, in executeresult = self._query(query)File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/pymysql/cursors.py", line 328, in _queryconn.query(q)File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/pymysql/connections.py", line 517, in queryself._affected_rows = self._read_query_result(unbuffered=unbuffered)File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/pymysql/connections.py", line 732, in _read_query_resultresult.read()File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/pymysql/connections.py", line 1075, in readfirst_packet = self.connection._read_packet()File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/pymysql/connections.py", line 684, in _read_packetpacket.check_error()File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/pymysql/protocol.py", line 220, in check_errorerr.raise_mysql_exception(self._data)File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/pymysql/err.py", line 109, in raise_mysql_exceptionraise errorclass(errno, errval)
pymysql.err.InternalError: (1050, "Table 'django_content_type' already exists")
The above exception was the direct cause of the following exception:
Traceback (most recent call last):File "manage.py", line 21, in <module>main()File "manage.py", line 17, in mainexecute_from_command_line(sys.argv)File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/django/core/management/__init__.py", line 381, in execute_from_command_lineutility.execute()File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/django/core/management/__init__.py", line 375, in executeself.fetch_command(subcommand).run_from_argv(self.argv)File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/django/core/management/base.py", line 323, in run_from_argvself.execute(*args, **cmd_options)File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/django/core/management/base.py", line 364, in executeoutput = self.handle(*args, **options)File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/django/core/management/base.py", line 83, in wrappedres = handle_func(*args, **kwargs)File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/django/core/management/commands/migrate.py", line 234, in handlefake_initial=fake_initial,File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/django/db/migrations/executor.py", line 117, in migratestate = self._migrate_all_forwards(state, plan, full_plan, fake=fake, fake_initial=fake_initial)File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/django/db/migrations/executor.py", line 147, in _migrate_all_forwardsstate = self.apply_migration(state, migration, fake=fake, fake_initial=fake_initial)File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/django/db/migrations/executor.py", line 245, in apply_migrationstate = migration.apply(state, schema_editor)File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/django/db/migrations/migration.py", line 124, in applyoperation.database_forwards(self.app_label, schema_editor, old_state, project_state)File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/django/db/migrations/operations/models.py", line 92, in database_forwardsschema_editor.create_model(model)File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/django/db/backends/base/schema.py", line 307, in create_modelself.execute(sql, params or None)File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/django/db/backends/base/schema.py", line 137, in executecursor.execute(sql, params)File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/django/db/backends/utils.py", line 99, in executereturn super().execute(sql, params)File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/django/db/backends/utils.py", line 67, in executereturn self._execute_with_wrappers(sql, params, many=False, executor=self._execute)File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/django/db/backends/utils.py", line 76, in _execute_with_wrappersreturn executor(sql, params, many, context)File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/django/db/backends/utils.py", line 84, in _executereturn self.cursor.execute(sql, params)File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/django/db/utils.py", line 89, in __exit__raise dj_exc_value.with_traceback(traceback) from exc_valueFile "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/django/db/backends/utils.py", line 82, in _executereturn self.cursor.execute(sql)File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/django/db/backends/mysql/base.py", line 74, in executereturn self.cursor.execute(query, args)File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/pymysql/cursors.py", line 170, in executeresult = self._query(query)File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/pymysql/cursors.py", line 328, in _queryconn.query(q)File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/pymysql/connections.py", line 517, in queryself._affected_rows = self._read_query_result(unbuffered=unbuffered)File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/pymysql/connections.py", line 732, in _read_query_resultresult.read()File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/pymysql/connections.py", line 1075, in readfirst_packet = self.connection._read_packet()File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/pymysql/connections.py", line 684, in _read_packetpacket.check_error()File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/pymysql/protocol.py", line 220, in check_errorerr.raise_mysql_exception(self._data)File "/home/hostbooks/django1/myproject/lib/python3.6/site-packages/pymysql/err.py", line 109, in raise_mysql_exceptionraise errorclass(errno, errval)
django.db.utils.InternalError: (1050, "Table 'django_content_type' already exists")django.db.utils.InternalError: (1050, "Table 'django_content_type' already exists")
When I opened MySQL to delete 'DJANGO_CONTENT_TYPE table with drop table command, it gives this error -
mysql> drop table django_content_type;
ERROR 1217 (23000): Cannot delete or update a parent row: a foreign key constraint fails
Ie I cant delete this table.
I did migrations because I did some changes in model.
Though I found an alternative to bypass this error not by logic. I created a nee database and changed settings to new database. Here I copied the content from initial database to another.