Method execute

sql/item.cc:3010–3025

@brief Execute function & store value in field. @return Function returns error status. @retval FALSE on success. @retval TRUE if an error occurred. */

  @retval TRUE if an error occurred.
*/
bool Item_sp::execute(THD *thd, bool *null_value, Item **args, uint arg_count)
{
  if (unlikely(execute_impl(thd, args, arg_count)))
  {
    *null_value= 1;
    process_error(thd);
    if (thd->killed)
      thd->send_kill_message();
    return true;
  }

  /* Check that the field (the value) is not NULL. */

  *null_value= sp_result_field->is_null();
  return (*null_value);
}

/**
   @brief Execute function and store the return value in the field.