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Code Issues 32 Releases Wiki Activity

Refs #29444 -- Removed redundant DatabaseFeatures.can_return_multiple_columns_from_insert.

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Unnecessary since b31e63879e.
This commit is contained in:
Mariusz Felisiak
2019-09-24 10:32:26 +02:00
parent b31e63879e
commit 01104368ff
5 changed files with 3 additions and 27 deletions
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1
django/db/backends/base/features.py
View File

@@ -23,7 +23,6 @@ class BaseDatabaseFeatures:
can_use_chunked_reads = True
can_return_columns_from_insert = False
can_return_multiple_columns_from_insert = False
can_return_rows_from_bulk_insert = False
has_bulk_insert = True
uses_savepoints = True

1
django/db/backends/oracle/features.py
View File

@@ -10,7 +10,6 @@ class DatabaseFeatures(BaseDatabaseFeatures):
has_select_for_update_of = True
select_for_update_of_column = True
can_return_columns_from_insert = True
can_return_multiple_columns_from_insert = True
can_introspect_autofield = True
supports_subqueries_in_group_by = False
supports_transactions = True

1
django/db/backends/postgresql/features.py
View File

@@ -8,7 +8,6 @@ from django.utils.functional import cached_property
class DatabaseFeatures(BaseDatabaseFeatures):
allows_group_by_selected_pks = True
can_return_columns_from_insert = True
can_return_multiple_columns_from_insert = True
can_return_rows_from_bulk_insert = True
has_real_datatype = True
has_native_uuid_field = True

8
django/db/models/sql/compiler.py
View File

@@ -1334,14 +1334,6 @@ class SQLInsertCompiler(SQLCompiler):
if self.connection.features.can_return_rows_from_bulk_insert and len(self.query.objs) > 1:
return self.connection.ops.fetch_returned_insert_rows(cursor)
if self.connection.features.can_return_columns_from_insert:
if (
len(self.returning_fields) > 1 and
not self.connection.features.can_return_multiple_columns_from_insert
):
raise NotSupportedError(
'Returning multiple columns from INSERT statements is '
'not supported on this database backend.'
)
assert len(self.query.objs) == 1
return self.connection.ops.fetch_returned_insert_columns(cursor, self.returning_params)
return [self.connection.ops.last_insert_id(

19
tests/queries/test_db_returning.py
View File

@@ -1,7 +1,7 @@
import datetime
from django.db import NotSupportedError, connection
from django.test import TestCase, skipIfDBFeature, skipUnlessDBFeature
from django.db import connection
from django.test import TestCase, skipUnlessDBFeature
from django.test.utils import CaptureQueriesContext
from .models import DumbCategory, NonIntegerPKReturningModel, ReturningModel
@@ -25,7 +25,6 @@ class ReturningValuesTests(TestCase):
self.assertTrue(obj.created)
self.assertIsInstance(obj.created, datetime.datetime)
@skipUnlessDBFeature('can_return_multiple_columns_from_insert')
def test_insert_returning_multiple(self):
with CaptureQueriesContext(connection) as captured_queries:
obj = ReturningModel.objects.create()
@@ -42,19 +41,7 @@ class ReturningValuesTests(TestCase):
self.assertTrue(obj.pk)
self.assertIsInstance(obj.created, datetime.datetime)
@skipIfDBFeature('can_return_multiple_columns_from_insert')
def test_insert_returning_multiple_not_supported(self):
msg = (
'Returning multiple columns from INSERT statements is '
'not supported on this database backend.'
)
with self.assertRaisesMessage(NotSupportedError, msg):
ReturningModel.objects.create()
@skipUnlessDBFeature(
'can_return_rows_from_bulk_insert',
'can_return_multiple_columns_from_insert',
)
@skipUnlessDBFeature('can_return_rows_from_bulk_insert')
def test_bulk_insert(self):
objs = [ReturningModel(), ReturningModel(pk=2 ** 11), ReturningModel()]
ReturningModel.objects.bulk_create(objs)