SQL

mysql order by on condition

 SELECT * 
    FROM my_table 
    WHERE 1  
    ORDER BY 
      CASE price WHEN 0 THEN 1
       ELSE -1
      END ASC, price asc, id asc

condition in orderby mysql

SELECT orders.status, orders.created_at
FROM `orders`
ORDER BY
  status='new' DESC,
  status='processing' DESC,
  CASE WHEN status IN ('new', 'processing') THEN created_at END ASC,
  CASE WHEN status NOT IN ('new', 'processing') THEN created_at END DESC