id	summary	reporter	owner	description	type	status	component	version	severity	resolution	keywords	cc	stage	has_patch	needs_docs	needs_tests	needs_better_patch	easy	ui_ux
15818	PostgreSQL autocommit mode breaks initial insert	Rick@…	nobody	"Settings used:
{{{#!python
DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql_psycopg2',
        'NAME': 'django_test',           # Or path to database file if using sqlite3.
        'USER': '',                      # Not used with sqlite3.
        'PASSWORD': '',                  # Not used with sqlite3.
        'HOST': '',                      # Set to empty string for localhost. Not used with sqlite3.
        'PORT': '',                      # Set to empty string for default. Not used with sqlite3.
        'OPTIONS': {
            'autocommit': True,
        },
    }
}
}}}

Code to reproduce:
{{{#!python
from django.conf import settings
from django.contrib.auth.models import User
user = User(username='something')
user.save()
}}}

Stacktrace when executing:
{{{#!python
Traceback (most recent call last):
  File ""test.py"", line 5, in <module>
    user.save()
  File ""django/db/models/base.py"", line 461, in save
    self.save_base(using=using, force_insert=force_insert, force_update=force_update)
  File ""django/db/models/base.py"", line 554, in save_base
    result = manager._insert(values, return_id=update_pk, using=using)
  File ""django/db/models/manager.py"", line 195, in _insert
    return insert_query(self.model, values, **kwargs)
  File ""django/db/models/query.py"", line 1434, in insert_query
    return query.get_compiler(using=using).execute_sql(return_id)
  File ""django/db/models/sql/compiler.py"", line 795, in execute_sql
    return self.connection.ops.fetch_returned_insert_id(cursor)
  File ""django/db/backends/__init__.py"", line 460, in fetch_returned_insert_id
    return cursor.fetchone()[0]
psycopg2.ProgrammingError: no results to fetch
}}}
"	Bug	closed	Database layer (models, ORM)	dev	Release blocker	duplicate	postgresql, postgresql-9, autocommit		Unreviewed	0	0	0	0	0	0