MYSQL用例从curdate（）中减去天数

Question

我想根据案例费用从上市费用中减去curdate（）的30天或60天如果刊登费= 5或6，则减去30天如果刊登费= 7或8，则减去60天

我已经尝试过了，但是似乎没有用

where `status`='C' and `close_date`>curdate() AND  `date_posted` < curdate() - 
CASE 
    WHEN listing_fee = 5 THEN INTERVAL 30 DAY
    WHEN listing_fee = 6 THEN INTERVAL 30 DAY
    WHEN listing_fee = 7 THEN INTERVAL 60 DAY
    WHEN listing_fee = 8 THEN INTERVAL 60 DAY

END

Answer 1

(CASE 
    WHEN listing_fee = 5 THEN  `date_posted` < DATE_SUB(curdate(), INTERVAL 30 DAY)
    WHEN listing_fee = 6 THEN  `date_posted` < DATE_SUB(curdate(), INTERVAL 30 DAY)
    WHEN listing_fee = 7 THEN  `date_posted` < DATE_SUB(curdate(), INTERVAL 60 DAY)
    WHEN listing_fee = 8 THEN  `date_posted` < DATE_SUB(curdate(), INTERVAL 60 DAY)
    ELSE 0/1 END # <- don't know what result
)