django
diff --git a/‎django/db/backends/base/schema.py
Lines changed: 3 additions & 5 deletions b/‎django/db/backends/base/schema.py
Lines changed: 3 additions & 5 deletions
@@ -923,13 +923,11 @@ def alter_field(self, model, old_field, new_field, strict=False):
     def _field_db_check(self, field, field_db_params):
         # Always check constraints with the same mocked column name to avoid
         # recreating constrains when the column is renamed.
-        check_constraints = self.connection.data_type_check_constraints
+        if (constraint := field.db_check(self.connection)) is None:
+            return None
         data = field.db_type_parameters(self.connection)
         data["column"] = "__column_name__"
-        try:
-            return check_constraints[field.get_internal_type()] % data
-        except KeyError:
-            return None
+        return constraint % data
 
     def _alter_field(
         self,