diff options
Diffstat (limited to 'django')
| -rw-r--r-- | django/db/models/expressions.py | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/django/db/models/expressions.py b/django/db/models/expressions.py index 6afe68bac0..ccb67876e2 100644 --- a/django/db/models/expressions.py +++ b/django/db/models/expressions.py @@ -7,6 +7,7 @@ from django.core.exceptions import EmptyResultSet, FieldError from django.db import connection from django.db.models import fields from django.db.models.query_utils import Q +from django.db.utils import NotSupportedError from django.utils.deconstruct import deconstructible from django.utils.functional import cached_property from django.utils.hashable import make_hashable @@ -1237,6 +1238,8 @@ class Window(Expression): def as_sql(self, compiler, connection, template=None): connection.ops.check_expression_support(self) + if not connection.features.supports_over_clause: + raise NotSupportedError('This backend does not support window expressions.') expr_sql, params = compiler.compile(self.source_expression) window_sql, window_params = [], [] |