mysql如何在where子句

Question

以下是我的查詢相同的子查詢更新表，我試圖更新recods，但我得到一個錯誤：

你不能指定目標表的更新，從條款

UPDATE user_payment_info 
SET 
    ammount='110', 
    status='failed', 
    transaction_id='0' 
WHERE 
    id=(SELECT id 
     FROM user_payment_info 
     WHERE cust_id='771' 
     ORDER BY id DESC 
     LIMIT 1) 

如何與來自同一個表

越來越ID更新記錄我怎樣才能解決這些MySQL錯誤

you can't specify target table for update in from clause

可以有些身體幫助我做到這些。

Answer 1

試試這個：

UPDATE user_payment_info AS t1 
INNER JOIN 
(
     SELECT MAX(id) AS MaxId 
     FROM user_payment_info 
     WHERE cust_id='771' 
) AS t2 ON t1.id = t2.MaxId 
SET t1.ammount='110', 
    t1.status='failed', 
    t1.transaction_id='0'; 

Answer 2

您不必使用子查詢，你可以使用與爲了一個UPDATE查詢和LIMIT 1：

UPDATE 
    user_payment_info 
SET 
    ammount='110', 
    status='failed', 
    transaction_id='0' 
WHERE 
    cust_id='771' 
ORDER BY 
    id DESC 
LIMIT 1