获得过去六个月的月度支付记录

Question

表格结构：

1. 发票



1. 发票付款



当前查询：

;WITH cte (clientid, invoiceid,  paid, disc)
As
(
    Select client_id clientId, vinvoice_Id invoiceId,  sum(amount_received) paid, sum(discount) disc
    From tbl_Vendor_Invoice_Payment
    Group by vinvoice_id, client_id
)
Select I.date, I.total_price, Isnull(paid, 0) Paid, (Total_price - Isnull(paid,0) - Isnull(disc,0)) Balance
From tbl_Vendor_invoice I Left join cte On I.client_id = cte.clientId 
And I.vinvoice_id = cte.invoiceid
order by vinvoice_id desc

输出：



但我的要求是获得过去六个月的月度结果如下：

Month       total_price  Paid     Balance
--------------------------------------------
October     800.00       750.00   50.00
September   200.00       100.00   100.00
August      350.00       350.00   0.00
.........

有人可以帮我解决这个问题吗？

Answer 1

SELECT DATEADD(month,DATEDIFF(month,0,[vi.date]),0), SUM(vi.total_price) total_price, SUM(vip.amount_received) Paid, SUM(vip.balance) balance
FROM tbl_Vendor_Invoice vi
INNER JOIN tbl_Vendor_Invoice_Payment vip
    on vi.vInvoice_Id = vip.vInvoice_Id
WHERE [vi.date] >= DATEADD(month, -6, DATEADD(month,DATEDIFF(month,0,[vi.date]),0))
GROUP BY DATEADD(month,DATEDIFF(month,0,[vi.date]),0)

这将在该月的第一天（包括年份）进行分组。如果您只想要月份名称，可以使用DATENAME(month, [date])。

来提取月份名称

Answer 2

我找到了答案：

;WITH cte (clientid, invoiceid,  paid, disc)
As
(
    Select client_id clientId, vinvoice_Id invoiceId,  sum(amount_received) paid, sum(discount) disc
    From tbl_Vendor_Invoice_Payment
    Group by vinvoice_id, client_id
)
SELECT DATENAME(month, [date]) mMonth, SUM(Isnull(paid, 0)) Amount_Paid
FROM tbl_Vendor_Invoice vi
INNER JOIN cte vip on vi.vinvoice_Id = vip.invoiceid
WHERE [date] >= DATEADD(month, -6, DATEADD(month,DATEDIFF(month,0,getdate()),0))
GROUP BY DATENAME(month, [date]), MONTH([date])
ORDER BY MONTH([date])