带有 LEFT JOIN 的 UPDATE 语法

Question

如何通过更新插入此查询？我已经尝试了所有可能的组合，但似乎没有任何效果！

UPDATE Test_table2
SET Pledge_Status = closed
WHERE (
    SELECT SUM(pledgers.Pledge_payment_amt) AS pledged
    FROM Test_table2  AS recipients
    LEFT JOIN Test_table2 AS pledgers
    ON recipients.GIFT_NO = pledgers.PLEDGE_GIFT_NO
    GROUP BY recipients.GIFT_NO
    HAVING recipients.Pledge_Amt >= pledged
    ORDER BY recipients.CRSID ASC
);

架构（所有 varchar）：

ID、姓名、Pledge_Amount、Pledge_payment_amt、Gift_No、Pledge_Gift_No、Pledge_Open/Closed

非常感谢！

Answer 1

平行于this question 我建议你使用WHERE ... IN SELECT。此外，您需要将子查询中每一行的 ID 传递给主查询，并且由于您没有提供表架构，我们只能在这里猜测：

UPDATE Test_table2
SET Pledge_Status = closed
WHERE [your id column] IN (
    SELECT [your id column]
    FROM Test_table2  AS recipients
    LEFT JOIN Test_table2 AS pledgers
    ON recipients.GIFT_NO = pledgers.PLEDGE_GIFT_NO
    GROUP BY recipients.GIFT_NO
    HAVING recipients.Pledge_Amt >= SUM(pledgers.Pledge_payment_amt)
    /*ORDER BY recipients.CRSID ASC <-- no need to order anything here */
);