Method mark_fields_used

sql/sql_trigger.cc:2973–3010

*/

void Table_triggers_list::mark_fields_used(trg_event_type event)
{
  int action_time;
  DBUG_ENTER("Table_triggers_list::mark_fields_used");

  for (action_time= 0; action_time < (int)TRG_ACTION_MAX; action_time++)
  {
    for (Trigger *trigger= get_trigger(event,action_time);
         trigger ;
         trigger= trigger->next[event])
    {
      /*
        Skip a trigger that was parsed with an error.
      */
      if (trigger->body == nullptr)
        continue;

      (void)iterate_trigger_fields_and_run_func(
        trigger->body->m_trg_table_fields,
        [this] (Item_trigger_field* trg_field)
        {
          /* We cannot mark fields which does not present in table. */
          if (trg_field->field_idx != NO_CACHED_FIELD_INDEX)
          {
            DBUG_PRINT("info", ("marking field: %u", (uint) trg_field->field_idx));
            if (trg_field->get_settable_routine_parameter())
              bitmap_set_bit(trigger_table->write_set, trg_field->field_idx);
            trigger_table->mark_column_with_deps(
              trigger_table->field[trg_field->field_idx]);
          }
          return false;
        }
      );
    }
  }
  trigger_table->file->column_bitmaps_signal(false);
  DBUG_VOID_RETURN;
}


/**