T-SQL：聚集和/或條件子查詢條件

Question

在此先感謝您的幫助。這是場景。我有兩個表格：批次（存儲食物項目的批量信息）和Trans（存儲批次項目中的庫存交易）。

我想寫一個查詢，列出了所有基於where子句不知何故3個條件超過90天的交易：

1. CurrentQty（上大量表）> 0
2. 如果TRANSACTIONTYPE =裝運和TransactionDate> 90日（從當前日期）OR ..
3. IF TRANSACTIONTYPE =接收和TransactionDate> 90日（從當前日期）

注：對於每個LO噸，可能有許多不同的相同類型的交易，如附圖所示。可能有很多貨物或收據。我需要能夠爲特定交易類型選擇MAX（TransactionDate）並檢查它是否超過90天然後顯示記錄。

每個批次的交易表中至少會存在這兩種交易類型中的一種，可以是發貨或收貨。如果某個批次上沒有裝運交易類型，那麼我想爲「收貨」交易類型使用Max（TransactionDate）> 90條件。

我需要能夠評估每個批次的所有這些條件，它是特定的交易。

下面是我開始編寫的查詢，但後來被困在如何構造其餘部分。

SELECT 
    LOTS.LOTNUMBER, TRANS.ITEMNUMBER, TRANS.DESCRIPTION, 
    TRANS.TRANSACTIONTYPE, TRANS.TRANSACTIONDATE, TRANS.WAREHOUSE, 
    TRANS.QUANTITY 
FROM 
    LOTS 
INNER JOIN 
    TRANS ON LOTS.LOTNUMBER = TRANS.LOTNUMBER 
WHERE 
    LOTS.CURRENTQUANTITY > 0 

Answer 1

SELECT 
    LOTS.LOTNUMBER, TRANS.ITEMNUMBER, TRANS.DESCRIPTION, 
    TRANS.TRANSACTIONTYPE, TRANS.TRANSACTIONDATE, TRANS.WAREHOUSE, 
    TRANS.QUANTITY 
FROM 
    LOTS 
INNER JOIN 
    (Select LotNumber, Max(TransactionDate) MaxTransDate From TRANS Group By LotNumber) Trans ON LOTS.LOTNUMBER = TRANS.LOTNUMBER 
WHERE 
    LOTS.CURRENTQUANTITY > 0 And 
    DATEDIFF(d, TRANS.TRANSACTIONDATE, getdate()) > 90 And 
    (TRANS.TRANSACTIONTYPE = 'Reciept' Or 
    TRANS.TRANSACTIONTYPE = 'Shipment') 

Answer 2

DECLARE @lots TABLE (
    LotNumber   NVARCHAR(10) 
    ,ItemNum   NVARCHAR(12) 
    ,CurrentQty   INT 
    ) 

DECLARE @trans TABLE (
    TransNum   INT 
    ,ItemNum   NVARCHAR(12) 
    ,Description  NVARCHAR(30) 
    ,TransType   NVARCHAR(10) 
    ,TransDate   DATE 
    ,Warehouse   NVARCHAR(5) 
    ,Quantity   INT 
    ) 

INSERT INTO @lots VALUES 
    ('ABC','10-MAND-5879',925) 

INSERT INTO @trans VALUES 
    (398741,'10-MAND-5879','10 Lb Mandarin Bag','Receipt','2016-01-01','IXCST',100) 
    ,(973541,'10-MAND-5879','10 Lb Mandarin Bag','Shipment','2016-02-04','WTGS',365) 
    ,(972547,'10-MAND-5879','10 Lb Mandarin Bag','Receipt','2016-02-29','GKWK',250) 
    ,(632403,'10-MAND-5879','10 Lb Mandarin Bag','Shipment','2016-03-01','GWSJ',150) 
    ,(692147,'10-MAND-5879','10 Lb Mandarin Bag','Shipment','2016-03-17','ABTK',25) 

;WITH MaxShip 
    AS (
     SELECT ItemNum, TransNum, 
      ROW_NUMBER() OVER (PARTITION BY ItemNum ORDER BY TransDate DESC) AS TransOrder 
      FROM @trans 
       WHERE TransType = 'Shipment' 
      ), 

MaxRcpt 
    AS (
     SELECT ItemNum, TransNum, 
      ROW_NUMBER() OVER (PARTITION BY ItemNum ORDER BY TransDate DESC) AS TransOrder 
      FROM @trans 
       WHERE transtype = 'Receipt' 
      ) 

SELECT * 
    FROM @trans t 
     LEFT JOIN @lots l 
      ON t.ItemNum = l.ItemNum 
     JOIN MaxShip ms 
      ON ms.TransNum = t.TransNum 
    WHERE TransOrder = 1 AND CurrentQty > 0 AND DATEADD(dd,90,TransDate) < GETDATE() 
UNION 
SELECT * 
    FROM @trans t 
     LEFT JOIN @lots l 
      ON t.ItemNum = l.ItemNum 
     JOIN MaxRcpt mr 
      ON mr.TransNum = t.TransNum 
    WHERE TransOrder = 1 AND CurrentQty > 0 AND DATEADD(dd,90,TransDate) < GETDATE()