根据条件查询获取记录总和

Question

我的任务是为库存管理应用程序创建查询功能。

我已经创建了查询，它将在其中生成

temporaryTable

，如下所示：
（或多或少这是用户输入想要的项目和范围）

id 项目	上一个日期	最新日期
10	2023-01-03	2023-04-01
15	2023-04-01	2023-06-01

我有一个表来存储交易

tableTransaction

，如下所示：

id 项目	数量	最后数量	交易日期
10	0	10	2023-01-01
10	10	10	2023-03-04
10	-5	5	2023-03-05
10	100	105	2023-03-06
15	0	0	2023-01-01
15	100	100	2023-03-01
15	35	135	2023-04-02
15	-15	120	2023-05-01

想问一下如何才能得到这个想要的结果？ 得到

lastQty

的

previousDate

为

beginningBalance

，

lastQty

的

latestDate

为

endingBalance

；

totalInput

；

totalOutput

对于

idItem

中

tableTranscation

和

previousDate

之间的每个

latestDate

（标准基于之前的

temporaryTable

）。 期望的结果：

id 项目	之前日期的开始余额	上一个日期	最新日期的期末余额	期末余额	总输入	总输出
10	10	2023-01-03	105	2023-04-01	110	5
15	100	2023-04-01	120	2023-06-01	35	15

感谢您的宝贵时间，我愿意接受数据库设计的任何更改。干杯。

Answer 1

您需要按日期计算余额以及总投入、总产出，然后将它们连接在一起。

DROP TABLE IF EXISTS #temporaryTable

CREATE TABLE #temporaryTable (
idItem int,
previousDate date,
latestDate date
);

INSERT INTO #temporaryTable (idItem, previousDate, latestDate)
VALUES
('10','2023-01-03','2023-04-01')
,('15','2023-04-01','2023-06-01')

DROP TABLE IF EXISTS #tableTransaction

CREATE TABLE #tableTransaction (
idItem int,
qty int,
lastQty int,
transactionDate date
);

INSERT INTO #tableTransaction (idItem, qty, lastQty, transactionDate)
VALUES
('10','0','10','2023-01-01')
,('10','10','10','2023-03-04')
,('10','-5','5','2023-03-05')
,('10','100','105','2023-03-06')
,('15','0','0','2023-01-01')
,('15','100','100','2023-03-01')
,('15','35','135','2023-04-02')
,('15','-15','120','2023-05-01')

; WITH beginningBalancePerDate AS (
SELECT temporaryTable.idItem, a.previousDate, tableTransaction.lastQty BalancePerDate
, ROW_NUMBER() OVER (PARTITION BY temporaryTable.idItem, a.previousDate  ORDER BY tableTransaction.transactionDate desc ) RowNumber
FROM #tableTransaction tableTransaction
  inner join #temporaryTable temporaryTable
    on tableTransaction.idItem = temporaryTable.idItem
  cross apply (
    SELECT temporaryTable.previousDate 
    UNION 
    SELECT temporaryTable.latestDate
  ) a
  WHERE tableTransaction.transactionDate <= a.previousDate
), sumInput AS (
SELECT temporaryTable.idItem, temporaryTable.previousDate, temporaryTable.latestDate,
SUM(CASE WHEN tableTransaction.qty > 0 THEN tableTransaction.qty ELSE 0 END ) totalInput,
SUM(CASE WHEN tableTransaction.qty < 0 THEN tableTransaction.qty * (-1) ELSE 0 END ) totalOutput
FROM #tableTransaction tableTransaction
  inner join #temporaryTable temporaryTable
    on tableTransaction.idItem = temporaryTable.idItem
WHERE tableTransaction.transactionDate <= temporaryTable.latestDate
AND tableTransaction.transactionDate > temporaryTable.previousDate
GROUP BY temporaryTable.idItem, temporaryTable.previousDate, temporaryTable.latestDate
)
SELECT temporaryTable.idItem
, preDate.BalancePerDate beginningBalanceperPreviousDate
, temporaryTable.previousDate
, nextDate.BalancePerDate beginningBalanceperLatestDate
, temporaryTable.latestDate endingBalance -- strange column name
, sumInput.totalInput
, sumInput.totalOutput
FROM  #temporaryTable temporaryTable
  LEFT JOIN sumInput
    ON temporaryTable.idItem = sumInput.idItem
    AND temporaryTable.previousDate = sumInput.previousDate
    AND temporaryTable.latestDate = sumInput.latestDate
  LEFT JOIN beginningBalancePerDate preDate
    ON temporaryTable.idItem = preDate.idItem
    AND temporaryTable.previousDate = preDate.previousDate
    AND preDate.RowNumber = 1
  LEFT JOIN beginningBalancePerDate nextDate
    ON temporaryTable.idItem = nextDate.idItem
    AND temporaryTable.latestDate = nextDate.previousDate
    AND nextDate.RowNumber = 1