SQL:SELECT autono,cate1,charge,ctitle,zip,cdateA,on_date,training_type FROM tb_course WHERE cate1 IN (1,5) AND cate2 IN ('56','4,56','55','4,55','54','4,54','53','4,53','52','4,52','44','4,44','45','4,45','184','4,184','4') AND charge = 0 AND ((on_date <= '2019-01-19' AND off_date > '2019-01-19' AND cdateA >= '2019-01-19') OR cdateA = '0000-00-00') ORDER BY (CASE WHEN cdateA = '0000-00-00' THEN 0 ELSE 1 END) DESC,cdateA ASC,autono DESC LIMIT 20
