方便的替换掉expiry date 而不影响其他内容
select concat( substring(remarks , 1, LOCATE('Expiry Date: ', remarks)+CHAR_LENGTH('Expiry Date: ') -1), '31-05-2020 ' ,substring(remarks , LOCATE('Partner Ref No', remarks), CHAR_LENGTH(remarks) ) ) as remarks from voucher_action where id = 3359116