按交易日期从以前的交易中获取总项目数量并获取当前项目总数量

Question

我有 3 个 Table 即：库存：

|ID|ItemID|TransactionDate     |Item             |Unit|Quantity|
----------------------------------------------------------------
|1 |1     |2019-07-10 12:23:51 |Plastic Cup 22oz |Pc  |200     |
----------------------------------------------------------------
|2 |2     |2019-07-09 01:23:51 |Plastic Cup 16oz |Pc  |100     |
----------------------------------------------------------------
|3 |1     |2019-07-10 01:23:51 |Plastic Cup 22oz |Pc  |100     |
----------------------------------------------------------------
|4 |3     |2019-07-09 01:23:51 |Lemon            |Pc  |100     |
----------------------------------------------------------------
|5 |2     |2019-07-10 01:23:51 |Plastic Cup 16oz |Pc  |100     |
----------------------------------------------------------------
|6 |1     |2019-07-09 01:23:51 |Plastic Cup 22oz |Pc  |100     |
----------------------------------------------------------------
|7 |3     |2019-07-10 01:23:51 |Lemon            |Pc  |100     |
----------------------------------------------------------------

消费产品：

|ID|TID|TransactionDate     |ItemID|Item             |Unit|Quantity|
------------------------------------------------------------------
|1 |1  |2019-07-10 12:23:51 |1     |Plastic Cup 22oz |Pc  |1     |
------------------------------------------------------------------
|2 |1  |2019-07-09 01:23:51 |3     |Lemon            |Pc  |1     |
------------------------------------------------------------------
|3 |2  |2019-07-10 01:23:51 |2     |Plastic Cup 16oz |Pc  |1     |
------------------------------------------------------------------
|4 |2  |2019-07-09 01:23:51 |3     |Lemon            |Pc  |1     |
------------------------------------------------------------------
|5 |3  |2019-07-10 01:23:51 |2     |Plastic Cup 16oz |Pc  |1     |
------------------------------------------------------------------

损坏的产品：

|ID|TransactionDate     |ItemID|Item             |Unit|Quantity|
----------------------------------------------------------------
|1 |2019-07-10 12:23:51 |1     |Plastic Cup 22oz |Pc  |10      |
----------------------------------------------------------------
|2 |2019-07-9 01:23:51 |2     |Plastic Cup 16oz |Pc  |10      |
----------------------------------------------------------------
|3 |2019-07-10 01:23:51 |1     |Plastic Cup 22oz |Pc  |5       |
----------------------------------------------------------------
|4 |2019-07-10 01:23:51 |3     |Lemon            |Pc  |6       |
----------------------------------------------------------------

目标输出：假设当前日期是 (2019-07-10)

Prev Bal= Inventory - (Cunsumed + Damaged) "From the Date Before the Current Date"
今天交付的项目（反映在 "Inventory" Table）
当前消耗（反映在 "ConsumedProducts" Table）
当前损坏（反映在"DamagedProducts" Table）
剩余余额=（上一个余额+今天交付的项目）-（当前消耗+当前损坏

|ID|ItemID|Item|Prev Bal|Current Delivered|Current Consumed|Current Damaged|Balance| --------------------------------------------------------------------------------------

我之前曾在这个论坛上问过如何求和 Tables 不知何故我能够得到很好的结果感谢这个社区的帮助但是我最近遇到了如上所述的这个问题。

Select I.ID, I.Item,
                    (Select IFNULL(SUM( (SELECT Quantity FROM inventory WHERE DATE(ItemTransactionDate) < CURDATE() GROUP BY I.ItemID)),0) - 
                    IFNULL((SELECT Quantity FROM inventory WHERE DATE(ItemTransactionDate) < CURDATE() GROUP BY I.ItemID),0) - 
                    IFNULL((SELECT Quantity FROM consumeditemmonitoring WHERE DATE(TransactionDate) < CURDATE() GROUP BY I.ItemID),0) As NEWBALANCE From inventory INV 
                    LEFT OUTER JOIN ( Select ItemID,IFNULL(SUM(Quantity),0) As Quantity from damagedinventory group by ItemID) DMG On INV.ItemID=DMG.ItemID 
                    LEFT OUTER JOIN (Select ItemID,IFNULL(SUM(Quantity),0) As Quantity from consumeditemmonitoring group by ItemID) CSMD On INV.ItemID=CSMD.ItemID GROUP BY I.ItemID),

                    (SELECT SUM(Quantity) As CurrentDeliveries FROM inventory WHERE DATE(ItemTransactionDate) = CURDATE() GROUP BY I.ItemID),

                    IFNULL(D.Quantity,0) As damagedQTY,

                    IFNULL(C.Quantity,0) As ConsumedQTY,

                    IFNULL(SUM(I.Quantity),0) - IFNULL(D.Quantity,0) - IFNULL(C.Quantity,0) As NEWBALANCE From inventory I LEFT OUTER JOIN 
                    (Select ItemID,IFNULL(SUM(Quantity),0) As Quantity from damagedinventory group by ItemID) D On I.ItemID=D.ItemID 
                    LEFT OUTER JOIN (Select ItemID,IFNULL(SUM(Quantity),0) As Quantity from consumeditemmonitoring group by ItemID) C On I.ItemID=C.ItemID GROUP BY I.ItemID"

我是编程新手，所以我真的没有足够的知识。非常感谢任何帮助。

Answer 1

希望这行得通，或者您可以对其进行调整。我使用了滞后功能。这会向您显示该列的先前值（另请阅读有关 lead 函数的信息 here）

SQL 查询：

SELECT I.ID,
       I.ItemID,
       PREV_BAL,
       ITEMS_DELIVERED_TODAY,
       CURRENT_CONSUMED,
       CURRENT_DAMAGED,
       PREV_BAL + ITEMS_DELIVERED_TODAY - CURRENT_CONSUMED - CURRENT_DAMAGED
           AS REMANING_BALANCE
  FROM (SELECT I.ID,
               I.ItemID,
               (  LAG (
                      I.Quantity,
                      1)
                  OVER (PARTITION BY I.ItemID
                        ORDER BY TRUNC (TransactionDate))
                - D.prevQuantity
                - C.prevQuantity)
                   PREV_BAL,
               I.Quantity ITEMS_DELIVERED_TODAY,
               C.Quantity CURRENT_CONSUMED,
               D.Quantity CURRENT_DAMAGED
          FROM inventory  I
               LEFT OUTER JOIN
               (  SELECT ItemID,
                         IFNULL (SUM (Quantity), 0)   AS Quantity,
                         IFNULL (SUM (prevQuantity), 0) AS prevQuantity
                    FROM (SELECT ItemID,
                                 Quantity,
                                 LAG (
                                     Quantity,
                                     1)
                                 OVER (PARTITION BY ItemID
                                       ORDER BY TRUNC (TransactionDate))
                                     prevQuantity
                            FROM damagedinventory) damagedinventory
                GROUP BY ItemID) D
                   ON I.ItemID = D.ItemID
               LEFT OUTER JOIN
               (  SELECT ItemID,
                         IFNULL (SUM (Quantity), 0)   AS Quantity,
                         IFNULL (SUM (prevQuantity), 0) AS prevQuantity
                    FROM (SELECT ItemID,
                                 Quantity,
                                 LAG (
                                     Quantity,
                                     1)
                                 OVER (PARTITION BY ItemID
                                       ORDER BY TRUNC (TransactionDate))
                                     prevQuantity
                            FROM consumeditemmonitoring) consumeditemmonitoring
                GROUP BY ItemID) C
                   ON I.ItemID = C.ItemID)

按交易日期从以前的交易中获取总项目数量并获取当前项目总数量

Getting the Total Item Quanity from previous Transactions by Date of Transaction and Getting Current Item Quantity Total

mysql

sql

multiple-tables

inventory-management