Question

表名：收据

列：
receipt_id，CUSTOMER_ID，receipt_date，receipt_amount

客户本可以支付很多账单。我想在收据表中找到每个客户的最后付款账单的详细信息。我使用嵌套查询，但我没有得到正确的结果。

select customer_id,receipt_date from receipt where receipt_id=(select top 1 receipt_id from receipt order by customer_id desc)

我使用Access 2007，C＃2.0。

Answer 1

通过查找每个[customer_id]的最新[receipt_date]来获取每个客户的最新收据的详细信息

SELECT
    customer_id,
    MAX(receipt_date) AS max_receipt_date
FROM receipt
GROUP BY customer_id

然后，您可以将其用作查询中的一个组件，以返回该[customer_id]和日期的整个[收据]行：

SELECT receipt.*
FROM
    receipt
    INNER JOIN
    (
        SELECT
            customer_id,
            MAX(receipt_date) AS max_receipt_date
        FROM receipt
        GROUP BY customer_id
    ) AS max
        ON max.customer_id = receipt.customer_id
            AND max.max_receipt_date = receipt.receipt_date

Answer 2

SELECT r1.*
FROM receipt r1
WHERE r1.recipt_date
    =
    (SELECT MAX(receipt_date) FROM receipt r2
         WHERE r2.customer_id = r1.customer_id
    );

此解决方案使用相关 - 子查询。

Answer 3

假设每次客户使用customer_id进行购买时都会插入记录，并且只有receipt_id不同......那么下面的SQL查询应该有效

选择receipt_id，receipt_date 从收据 group by customer_id;

你也可以通过receipt_date

添加订单

如何查找收据表中的每个客户的最后付款帐单

3 个答案: