fix(BigQuery): Support special characters in column/metric names used in ORDER BY

superset/models/helpers.py

@@ -1974,7 +1974,9 @@
                 and db_engine_spec.allows_hidden_cc_in_orderby
                 and col.name in [select_col.name for select_col in select_exprs]
             ):
-                col = literal_column(col.name)
+                with self.database.get_sqla_engine_with_context() as engine:
+                    quote = engine.dialect.identifier_preparer.quote
+                    col = literal_column(quote(col.name))
             direction = sa.asc if ascending else sa.desc
             qry = qry.order_by(direction(col))
 

tests/integration_tests/db_engine_specs/bigquery_tests.py

@@ -381,4 +381,4 @@ def test_calculated_column_in_order_by(self):
             "orderby": [["gender_cc", True]],
         }
         sql = table.get_query_str(query_obj)
-        assert "ORDER BY gender_cc ASC" in sql
+        assert "ORDER BY `gender_cc` ASC" in sql