title: How to list all columns in table with Sql trigger
body: <pre><code>CREATE TRIGGER `table_triger_on_before_delete`     
  BEFORE DELETE ON `db`.`table`     
  FOR EACH ROW     
  INSERT INTO db_bkp.`table`
      (col1, col2, col3)
  VALUES
      (OLD.col1, OLD.col2, OLD.col3)
  </code></pre>
  
  <p>I want to get this</p>
  
  <pre><code>(col1, col2, col3)
  </code></pre>
  
  <p>without type them one by one </p>