更新在同一個查詢中從SELECT中檢索的結果

Question

我需要在以下SELECT查詢的RESULT中但在單個查詢中將「payments」表的「payment_status」列更新爲'1'。請幫幫我。

SELECT * FROM payments p 
INNER JOIN invoice i 
ON i.invoice_number = p.invoiceGRN_id 
WHERE i.invoice_status = '2' AND i.payment_type = 'Credit' 

Answer 1

你可以做一個UPDATE與INNER JOIN

UPDATE payments p 
INNER JOIN invoice i 
ON i.invoice_number = p.invoiceGRN_id 
SET p.payment_status = 1 
WHERE i.invoice_status = '2' AND i.payment_type = 'Credit' 

或者你可以做這樣的事情（這是效率較低，但更直接地回答你的問題）：

UPDATE payments 
SET payment_status = 1 
WHERE id IN (
    SELECT p.id FROM payments p 
    INNER JOIN invoice i 
    ON i.invoice_number = p.invoiceGRN_id 
    WHERE i.invoice_status = '2' AND i.payment_type = 'Credit' 
) 

Answer 2

這應該是訣竅：

UPDATE payments SET payment_status = 1 WHERE payment_ID in (
    SELECT payment_ID FROM payments p 
    INNER JOIN invoice i 
    ON i.invoice_number = p.invoiceGRN_id 
    WHERE i.invoice_status = '2' AND i.payment_type = 'Credit')