microsoft · gargsaumya · Jun 11, 2026 · Jun 10, 2026 · Jun 10, 2026 · Jun 10, 2026
diff --git a/mssql_python/cursor.py b/mssql_python/cursor.py
@@ -2413,6 +2413,11 @@ def executemany(  # pylint: disable=too-many-locals,too-many-branches,too-many-s
                 "DAE parameters detected. Falling back to row-by-row execution with streaming.",
             )
             for row in seq_of_parameters:
+                # Convert Row objects to tuples for compatibility with execute()
+                # Row objects from fetch APIs must be converted since _map_sql_type
+                # only recognizes primitive types (str, int, etc.), not Row objects
+                if hasattr(row, "_values") and hasattr(row, "__iter__"):
+                    row = tuple(row)
                 self.execute(operation, row)
             return