title: Django : ProgrammingError: column "id" does not exist
body: <p>I try to use postgresql database (before I had SQLite) but I have a message when I execute <code>python manage.py migrate</code> :</p>
  
  <pre><code>Operations to perform:
  Apply all migrations: sessions, admin, sites, auth, contenttypes, main_app
  Running migrations:
  Rendering model states... DONE
  Applying main_app.0004_auto_20161002_0034...Traceback (most recent call last):
  File "manage.py", line 10, in &lt;module&gt;
  execute_from_command_line(sys.argv)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 353, in execute_from_command_line
  utility.execute()
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/__init__.py", line 345, in execute
  self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 348, in run_from_argv
  self.execute(*args, **cmd_options)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 399, in execute
  output = self.handle(*args, **options)
  File "/usr/local/lib/python2.7/dist-packages/django/core/management/commands/migrate.py", line 200, in handle
  executor.migrate(targets, plan, fake=fake, fake_initial=fake_initial)
  File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/executor.py", line 92, in migrate
  self._migrate_all_forwards(plan, full_plan, fake=fake, fake_initial=fake_initial)
  File "/usr/local/lib/python2.7/dist-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 "/usr/local/lib/python2.7/dist-packages/django/db/migrations/executor.py", line 198, in apply_migration
  state = migration.apply(state, schema_editor)
  File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/migration.py", line 123, in apply
  operation.database_forwards(self.app_label, schema_editor, old_state, project_state)
  File "/usr/local/lib/python2.7/dist-packages/django/db/migrations/operations/fields.py", line 201, in database_forwards
  schema_editor.alter_field(from_model, from_field, to_field)
  File "/usr/local/lib/python2.7/dist-packages/django/db/backends/base/schema.py", line 482, in alter_field
  old_db_params, new_db_params, strict)
  File "/usr/local/lib/python2.7/dist-packages/django/db/backends/postgresql/schema.py", line 110, in _alter_field
  new_db_params, strict,
  File "/usr/local/lib/python2.7/dist-packages/django/db/backends/base/schema.py", line 634, in _alter_field
  params,
  File "/usr/local/lib/python2.7/dist-packages/django/db/backends/base/schema.py", line 110, in execute
  cursor.execute(sql, params)
  File "/usr/local/lib/python2.7/dist-packages/django/db/backends/utils.py", line 79, in execute
  return super(CursorDebugWrapper, self).execute(sql, params)
  File "/usr/local/lib/python2.7/dist-packages/django/db/backends/utils.py", line 64, in execute
  return self.cursor.execute(sql, params)
  File "/usr/local/lib/python2.7/dist-packages/django/db/utils.py", line 95, in __exit__
  six.reraise(dj_exc_type, dj_exc_value, traceback)
  File "/usr/local/lib/python2.7/dist-packages/django/db/backends/utils.py", line 64, in execute
  return self.cursor.execute(sql, params)
  django.db.utils.ProgrammingError: column "id" does not exist
  LINE 1: ..._app_projet" ALTER COLUMN "id" TYPE integer USING "id"::inte...
  </code></pre>
  
  <p>So I guess this error is about my model 'Projet' but this model has ID field ! I see that in <strong>0001_initial.py</strong> :</p>
  
  <pre><code>...
  migrations.CreateModel(
          name='Projet',
          fields=[
              ('id', models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID')),
              ('name', models.CharField(db_index=True, max_length=30)),
              ('presentation', models.TextField(max_length=2500, null=True)),
  ...
  </code></pre>
  
  <p>My migration main_app.0004_auto_20161002_0034 :</p>
  
  <pre><code>class Migration(migrations.Migration):
  
      dependencies = [
          ('main_app', '0003_auto_20161002_0033'),
      ]
  
      operations = [
          migrations.AlterField(
              model_name='projet',
              name='id',
              field=models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name='ID'),
      ),
      ]
  </code></pre>
  
  <p>Projet model is like that :</p>
  
  <pre><code>class Group(models.Model) :
      name = models.CharField(max_length=30, db_index=True)
  
      class Meta :
          abstract = True
          unique_together = (("id", "name"),)
  
  
  class Projet(Group) :
      presentation = models.TextField(max_length=2500, null=True)
  </code></pre>
  
  <p>Realy I don't understand why I have this error... my settings configuration database is good, all others models work, ...</p>
  
  <p>If I forgot something, please don't hesitate to tell me ! I need realy your helps !</p>