如果在mysql中有條件觸發？

Question

直接向前，我有觸發器mysql中使用條件狀態的問題。 有2個狀態，如果狀態是'客人'，那麼做一些事情，否則做另一件事。

這裏就是我已經做出：

CREATE TRIGGER `update-gain` AFTER INSERT ON `payment` 
FOR EACH ROW BEGIN 
declare v_profit integer; 
declare v_deposit integer; 
declare v_status CHAR; 

select (status) into v_status from item where item.id_item=new.id_item; 
select sum(profit_owner) into v_profit from payment where payment.id_item=new.id_item; 
select sum(profit_guest) into v_deposit from payment where payment.id_item=new.id_item; 

if v_status like 'guest' then 
INSERT INTO gain 
(gain.profit, gain.modal,gain.date) 
VALUES 
(v_profit,v_deposit,new.date) 
ON DUPLICATE KEY UPDATE 
gain.profit = gain.profit+new.profit_owner, 
gain.modal = gain.deposit+new.profit_guest; 

else 
INSERT INTO gain 
(gain.profit,gain.tanggal) 
VALUES 
(v_profit,new.tgl_stok) 
ON DUPLICATE KEY UPDATE 
gain.profit = gain.profit_owner+new.profit_owner; 

end if; 
END 

到目前爲止，我使用「喜歡」條款，但病情總是如此，甚至v_status不是「客人」。

我在這裏做錯了什麼？ 謝謝:)

Answer 1

變化

if v_status like 'guest' then 

爲

if v_status = 'guest' then