Fixed #26833 -- Fixed SchemaEditor._constraint_names() to handle features.uppercases_column_names.

1 files changed, 5 insertions, 1 deletions

diff --git a/django/db/backends/base/schema.py b/django/db/backends/base/schema.py
index fc2120899d..44e598f92e 100644
--- a/django/db/backends/base/schema.py
+++ b/django/db/backends/base/schema.py
@@ -941,7 +941,11 @@ class BaseDatabaseSchemaEditor(object):
         """
         Returns all constraint names matching the columns and conditions
         """
-        column_names = list(column_names) if column_names else None
+        if column_names is not None:
+            column_names = [
+                self.connection.introspection.column_name_converter(name)
+                for name in column_names
+            ]
         with self.connection.cursor() as cursor:
             constraints = self.connection.introspection.get_constraints(cursor, model._meta.db_table)
         result = []