message: Fix rebuilding table with integer primary key column
diff: @@ -3253,7 +3253,7 @@ void Table::rebuild_table_with_pk_column()
  }
  for (auto key : tmp_keys) {
  auto old_obj = get_object(key);
  - StringData pk(old_obj.get<String>(m_primary_key_col));
  + Mixed pk(old_obj.get_any(m_primary_key_col));
  auto new_obj = create_object_with_primary_key(pk);
  new_obj.assign(old_obj);
  remove_object(key);
  