mysql sql选择每个组中的最后一条记录

Question

我有以下查询，提供以下屏幕快照中的结果。 我想要完成的是使最终结果仅是每个invoice_number的最后一条记录。

我查看了与按组或子组选择最后一条记录有关的其他问题，而我的sql技能还没有达到我可以应用这些其他问题提供的解决方案的水平。

任何帮助表示赞赏。

SELECT 
    `Invoice`.Amount AS amount,
    zuora.convertDateTimeToGMTOffsetDateTime(`Invoice`.CreatedDate) AS created_date,
    `Invoice`.InvoiceNumber AS invoice_number,
    RatePlanCharge.chargeModel,
    RatePlanCharge.chargeType,
    `InvoiceItem`.`RatePlanChargeId`,
    CASE
        WHEN
            PaymentMethod.type = 'CreditCard'
        THEN
            CONCAT(PaymentMethod.creditCardType,
                    ' (',
                    REPLACE(PaymentMethod.creditCardMaskNumber,
                        '*',
                        ''),
                    ')')
        WHEN
            PaymentMethod.type = 'PayPal'
                AND PaymentMethod.paypalEmail != ''
        THEN
            IF(PaymentMethod.paypalEmail != '',
                CONCAT(PaymentMethod.type,
                        ' (',
                        PaymentMethod.paypalEmail,
                        ')'),
                PaymentMethod.type)
        WHEN PaymentMethod.type = 'WireTransfer' THEN 'Wire Transfer'
        ELSE IF(Invoice.Amount = 0,
            'None Required',
            IF(PaymentMethod.type,
                PaymentMethod.type,
                'Unpaid'))
    END AS payment_method,
    IF(RatePlanCharge.chargeModel != 'Discount'
            AND (RatePlanCharge.chargeType = 'Recurring'
            OR RatePlanCharge.chargeType = 'Usage'),
        TRUE,
        FALSE) AS recurring
FROM
    `InvoiceItem`
        JOIN
    `Invoice` ON `InvoiceItem`.`InvoiceId` = `Invoice`.`id`
        LEFT JOIN
    `RatePlanCharge` ON `RatePlanCharge`.`id` = `InvoiceItem`.`RatePlanChargeId`
        LEFT JOIN
    `InvoicePayment` ON `InvoicePayment`.`invoiceId` = `Invoice`.`id`
        LEFT JOIN
    `Payment` ON `Payment`.`id` = `InvoicePayment`.`paymentId`
        LEFT JOIN
    `PaymentMethod` ON `Payment`.`paymentMethodId` = `PaymentMethod`.`id`
        LEFT JOIN
    `CreditBalanceAdjustment` ON `CreditBalanceAdjustment`.`sourceTransactionId` = `Invoice`.`id`
WHERE
    `Invoice`.`Status` = 'Posted'
        AND Invoice.accountid = '2c92c0f84b786da2014bb934ef664f1b'

提供以下结果。 我想将最终结果限制为仅以黄色突出显示的记录（每组发票编号中的最后一条记录）：

Answer 1

要获得每张发票的单行，只需在查询末尾添加
GROUP BY Invoice.InvoiceNumber
但是从您的帖子中尚不清楚“最后”行的标准/属性是什么。 是原始的created_date属性（在屏幕截图中已经有转换后的日期，无法区分）吗？ 如果是这样，那么您应该首先按调用号对结果集进行排序，然后按创建日期按降序排序（以便将每张发票的最新记录列为第一个，而组Caluse将采用该记录），将其添加
ORDER BY Invoice.InvoiceNumber asc, Invoice.CreatedDate desc GROUP BY Invoice.InvoiceNumber