sql-server - Sql server for-each 或 while 行-6ren

sql-server - Sql server for-each 或 while 行

转载作者：行者123 更新时间：2023-12-04 09:34:40

首先我使用了 AdvantureWork2019 DB，你可以用它来查看与我相同的结果，如果你想测试它，我会在最后添加一个脚本来创建折扣表并创建我用来创建的 View # #tempTables，我的问题是:
我有 2 个临时表，第一个是这个:

DiscID  Desc    DiscLimitID Limit         DiscPercID    Perc    Qty      DiscQtyID  Allowed Allocated
1        NA         1       0.0000000         1      0.0200000  1.0000000   1      0.0000000    0.0000000
2        Cheap      2       50.0000000        2      0.0100000  4.0000000   2   1000.0000000    0.0000000
3        Moderate   3       200.0000000       3      0.0250000  3.0000000   3   5000.0000000    0.0000000
4        Expensive  4       1000.0000000      4      0.0500000  2.0000000   4   20000.0000000   5000.0000000

第二个 :

SalesOrderID    SalesOrderDetailID  LineTotal   OrderQty    ODiscID
43659                   1          2024.994000      1         0
43659                   2          6074.982000      3         4
43659                   3          2024.994000      1         0
43659                   4          2039.994000      1         0
43659                   5          2039.994000      1         0
43659                   6          4079.988000      2         4
43659                   7          2039.994000      1         0
43659                   8          86.521200        3         0
43659                   9          28.840400        1         1
43659                  10          34.200000        6         1

我做了一个查询来给我这个结果(样本):

SOdID   LineTotal   DiscID  Discount    FinalTotal  FinalAllocated
9   28.840400   1   0.576808    28.263592   0.576808
10  34.200000   1   0.684000    33.516000   1.260808
11  10.373000   1   0.207460    10.165540   1.468268
18  20.746000   1   0.414920    20.331080   1.883188
12  80.746000   2   0.807460    79.938540   0.807460
19  115.361600  2   1.153616    114.207984  1.961076
29  100.932500  2   1.009325    99.923175   2.970401
85  173.042400  2   1.730424    171.311976  4.700825
105 115.361600  2   1.153616    114.207984  5.854441
139 80.746000   2   0.807460    79.938540   6.661901
34  551.814600  3   13.795365   538.019235  13.795365
44  535.742400  3   13.393560   522.348840  27.188925
95  551.814600  3   13.795365   538.019235  40.984290
104 535.742400  3   13.393560   522.348840  54.377850
2   6074.982000 4   303.749100  5771.232900 303.749100
6   4079.988000 4   203.999400  3875.988600 507.748500
17  1429.408600 4   71.470430   1357.938170 579.218930
20  1445.189800 4   72.259490   1372.930310 651.478420
21  6074.982000 4   303.749100  5771.232900 955.227520
22  4049.988000 4   202.499400  3847.488600 1157.726920
24  1637.400000 4   81.870000   1555.530000 1239.596920

我现在想要做的是创建一个 Cursor 或 While 循环来停止查询 Discount并添加到 FinalAllocated并将其替换为 0
例如如果 DiscID = 3 达到 5000( FinalAllocated ) 然后停止查询继续 DiscID 3 和添加 0 Discount到包含 DiscID = 3 的其余行然后去下一个 DiscID这是 4 并重新开始
前任:

while (FinalAllocated < Allowed for that ID)
Contnue
Else 0

如果你愿意，你会在这里找到我用来测试它的所有东西
来自 AdventureWork2019 数据库:

    Create View vSalesOrderAll As
  select SOH.SalesOrderID,SOD.SalesOrderDetailID,SOD.LineTotal,SOH.OrderDate,SOD.OrderQty from sales.SalesOrderDetail as SOD
  Inner Join [Sales].[SalesOrderHeader] AS SOH ON 
  SOD.SalesOrderID = SOH.SalesOrderID

折扣表脚本:

USE [AdventureWorks2019]
GO
/****** Object:  Table [dbo].[DiscountClass]    Script Date: 6/29/2020 12:29:43 PM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[DiscountClass](
    [DiscountClassID] [int] IDENTITY(1,1) NOT NULL,
    [Description] [nvarchar](50) NULL,
 CONSTRAINT [PK_DiscountClass] PRIMARY KEY CLUSTERED 
(
    [DiscountClassID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, OPTIMIZE_FOR_SEQUENTIAL_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY]
GO
/****** Object:  Table [dbo].[DiscountLimit]    Script Date: 6/29/2020 12:29:43 PM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[DiscountLimit](
    [DiscountLimitID] [int] IDENTITY(1,1) NOT NULL,
    [DiscountClassID] [int] NULL,
    [Limit] [numeric](24, 7) NULL,
 CONSTRAINT [PK_DiscountLimit] PRIMARY KEY CLUSTERED 
(
    [DiscountLimitID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, OPTIMIZE_FOR_SEQUENTIAL_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY]
GO
/****** Object:  Table [dbo].[DiscountPercentage]    Script Date: 6/29/2020 12:29:43 PM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[DiscountPercentage](
    [DiscountPercentageID] [int] IDENTITY(1,1) NOT NULL,
    [DiscountLimitID] [int] NULL,
    [Quantity] [numeric](24, 7) NULL,
    [Percentage] [numeric](24, 7) NULL,
 CONSTRAINT [PK_DiscountPercentage] PRIMARY KEY CLUSTERED 
(
    [DiscountPercentageID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, OPTIMIZE_FOR_SEQUENTIAL_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY]
GO
/****** Object:  Table [dbo].[DiscountQuota]    Script Date: 6/29/2020 12:29:43 PM ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE TABLE [dbo].[DiscountQuota](
    [DiscountQuotaId] [int] IDENTITY(1,1) NOT NULL,
    [DiscountClassId] [int] NULL,
    [Allowed] [numeric](24, 7) NULL,
    [Allocated] [numeric](24, 7) NULL,
 CONSTRAINT [PK_DiscountQuota] PRIMARY KEY CLUSTERED 
(
    [DiscountQuotaId] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON, OPTIMIZE_FOR_SEQUENTIAL_KEY = OFF) ON [PRIMARY]
) ON [PRIMARY]
GO
SET IDENTITY_INSERT [dbo].[DiscountClass] ON 

INSERT [dbo].[DiscountClass] ([DiscountClassID], [Description]) VALUES (1, N'NA')
INSERT [dbo].[DiscountClass] ([DiscountClassID], [Description]) VALUES (2, N'Cheap')
INSERT [dbo].[DiscountClass] ([DiscountClassID], [Description]) VALUES (3, N'Moderate')
INSERT [dbo].[DiscountClass] ([DiscountClassID], [Description]) VALUES (4, N'Expensive')
SET IDENTITY_INSERT [dbo].[DiscountClass] OFF
GO
SET IDENTITY_INSERT [dbo].[DiscountLimit] ON 

INSERT [dbo].[DiscountLimit] ([DiscountLimitID], [DiscountClassID], [Limit]) VALUES (1, 1, CAST(0.0000000 AS Numeric(24, 7)))
INSERT [dbo].[DiscountLimit] ([DiscountLimitID], [DiscountClassID], [Limit]) VALUES (2, 2, CAST(50.0000000 AS Numeric(24, 7)))
INSERT [dbo].[DiscountLimit] ([DiscountLimitID], [DiscountClassID], [Limit]) VALUES (3, 3, CAST(200.0000000 AS Numeric(24, 7)))
INSERT [dbo].[DiscountLimit] ([DiscountLimitID], [DiscountClassID], [Limit]) VALUES (4, 4, CAST(1000.0000000 AS Numeric(24, 7)))
SET IDENTITY_INSERT [dbo].[DiscountLimit] OFF
GO
SET IDENTITY_INSERT [dbo].[DiscountPercentage] ON 

INSERT [dbo].[DiscountPercentage] ([DiscountPercentageID], [DiscountLimitID], [Quantity], [Percentage]) VALUES (1, 1, CAST(1.0000000 AS Numeric(24, 7)), CAST(0.0200000 AS Numeric(24, 7)))
INSERT [dbo].[DiscountPercentage] ([DiscountPercentageID], [DiscountLimitID], [Quantity], [Percentage]) VALUES (2, 2, CAST(4.0000000 AS Numeric(24, 7)), CAST(0.0100000 AS Numeric(24, 7)))
INSERT [dbo].[DiscountPercentage] ([DiscountPercentageID], [DiscountLimitID], [Quantity], [Percentage]) VALUES (3, 3, CAST(3.0000000 AS Numeric(24, 7)), CAST(0.0250000 AS Numeric(24, 7)))
INSERT [dbo].[DiscountPercentage] ([DiscountPercentageID], [DiscountLimitID], [Quantity], [Percentage]) VALUES (4, 4, CAST(2.0000000 AS Numeric(24, 7)), CAST(0.0500000 AS Numeric(24, 7)))
SET IDENTITY_INSERT [dbo].[DiscountPercentage] OFF
GO
SET IDENTITY_INSERT [dbo].[DiscountQuota] ON 

INSERT [dbo].[DiscountQuota] ([DiscountQuotaId], [DiscountClassId], [Allowed], [Allocated]) VALUES (1, 1, CAST(0.0000000 AS Numeric(24, 7)), CAST(0.0000000 AS Numeric(24, 7)))
INSERT [dbo].[DiscountQuota] ([DiscountQuotaId], [DiscountClassId], [Allowed], [Allocated]) VALUES (2, 2, CAST(10000.0000000 AS Numeric(24, 7)), CAST(0.0000000 AS Numeric(24, 7)))
INSERT [dbo].[DiscountQuota] ([DiscountQuotaId], [DiscountClassId], [Allowed], [Allocated]) VALUES (3, 3, CAST(50000.0000000 AS Numeric(24, 7)), CAST(0.0000000 AS Numeric(24, 7)))
INSERT [dbo].[DiscountQuota] ([DiscountQuotaId], [DiscountClassId], [Allowed], [Allocated]) VALUES (4, 4, CAST(200000.0000000 AS Numeric(24, 7)), CAST(5000.0000000 AS Numeric(24, 7)))
SET IDENTITY_INSERT [dbo].[DiscountQuota] OFF
GO

第二个观点:

   Create View vAllDiscounts As
   select DS.DiscountClassID,DS.Description
   ,DL.DiscountLimitID,DL.Limit
   ,DP.DiscountPercentageID,DP.Percentage,DP.Quantity
   ,DQ.DiscountQuotaId,DQ.Allowed,DQ.Allocated
   from DiscountClass DS Inner join
  DiscountLimit DL ON  DS.DiscountClassID = DL.DiscountClassID
  INNER JOIN DiscountPercentage DP ON DL.DiscountLimitID = DP.DiscountLimitID
  INNER JOIN DiscountQuota DQ ON DQ.DiscountClassId = DL.DiscountClassID

临时表:

select *
INTO ##TempDiscount
from vAllDiscounts 


select *
INTO ##TempOrederData
from vSalesOrderAll

ODiscId

update TOD
SET TOD.ODiscID = (CASE WHEN TOD.LineTotal <= 49 AND TOD.OrderQty >= 1  THEN 1
            WHEN TOD.LineTotal >= 50 AND TOD.LineTotal <= 199 AND TOD.OrderQty >= 4 THEN 2
            WHEN TOD.LineTotal >= 200 AND TOD.LineTotal <= 999 AND TOD.OrderQty >= 3 THEN 3
            WHEN TOD.LineTotal >= 1000 AND TOD.OrderQty >= 2 THEN  4
            ELSE 0 END)
from ##TempOrederData AS TOD

这是我用来获取输出的查询:

WITH TotalDisc AS
(
SELECT TOD.SalesOrderID,TOD.SalesOrderDetailID AS SOdID
,TOD.LineTotal,TOD.OrderQty,TOD.OrderDate,AD.DiscountClassID AS DiscID 
,Percentage ,(LineTotal*Percentage) AS Discount, AD.Allocated,AD.Allowed AS Allo

FROM ##TempOrederData TOD
INNER JOIN ##TempDiscount AD ON TOD.ODiscID = AD.DiscountClassID 
), TotalAndDiscount AS
(
SELECT SalesOrderID,SOdID,LineTotal,OrderQty,OrderDate,DiscID,Discount,Allocated,LineTotal-Discount AS FinalTotal
FROM TotalDisc
)
SELECT SOdID,LineTotal,DiscID,Discount,FinalTotal,
sum(Discount) over ( Partition by DiscID order by SOdID) AS FinalAllocated
FROM TotalAndDiscount

编辑 :
我添加了 Case Statement 以在达到限制时停止它

WITH TotalDisc AS
(
SELECT TOD.SalesOrderID,TOD.SalesOrderDetailID AS SOdID
,TOD.LineTotal,TOD.OrderQty,TOD.OrderDate,AD.DiscountClassID AS DiscID 
,Percentage ,(LineTotal*Percentage) AS Discount, AD.Allocated AS Allc,AD.Allowed AS Allo

FROM ##TempOrederData TOD
INNER JOIN ##TempDiscount AD ON TOD.ODiscID = AD.DiscountClassID 
), TotalAndDiscount AS
(
SELECT SalesOrderID,SOdID,LineTotal,OrderQty,OrderDate,DiscID,Discount,Allc,LineTotal-Discount AS FinalTotal
FROM TotalDisc
), FinalCalc AS
(
SELECT SOdID,LineTotal,DiscID,Discount,FinalTotal,
sum(Discount) over ( Partition by DiscID order by SOdID) AS FinalAllocated
FROM TotalAndDiscount
),TestAllo AS
(
Select *
,Allocated = SUM(CASE   WHEN DiscID = 1 AND FinalAllocated < 5000 THEN  FinalAllocated
                        WHEN DiscID = 2 AND FinalAllocated < 10000 THEN  FinalAllocated
                        WHEN DiscID = 3 AND FinalAllocated < 20000 THEN  FinalAllocated
                        WHEN DiscID = 4 AND FinalAllocated < 50000 THEN  FinalAllocated
                        Else '0' END ) 
from FinalCalc
group by FinalCalc.SodID,FinalCalc.LineTotal,FinalCalc.DiscID,FinalCalc.Discount,FinalCalc.FinalTotal,FinalCalc.FinalAllocated
)
select * from TestAllo
where Allocated != 0
order by DiscID

编辑2:
所需的输出将是这样的

SOdID   LineTotal   DiscID  Discount    FinalTotal  FinalAllocated  Allocated
    915 2144.112900     4   107.205645  2036.907255 48226.798765    48226.798765
    916 27055.760424    4   1352.788021 25702.972403    49579.586786    49579.586786
    918 8159.976000     4   407.998800  7751.977200 49987.585586    49987.585586
    924 1749.588000     4   0           1749.588000 49987.585586    0.000000
    928 1749.588000     4   0           1749.588000 49987.585586    0.000000
    932 1749.588000     4   0           1749.588000 49987.585586    0.000000
    934 2097.294500     4   0           2097.294500 49987.585586    0.000000
    942 1258.376700     4   0           1258.376700 49987.585586    0.000000

是当分配达到限制时，我希望它停止折扣并将下一个折扣替换为 0 并从折扣表中获取允许的内容，如下所示:

CASE    WHEN DiscID = 1 AND FinalAllocated < (Select allowed from DiscountQuota where DiscId=1) THEN  FinalAllocated

但我不断收到此错误

Cannot perform an aggregate function on an expression containing an aggregate or a subquery.

同样，我想要实现的是在 (FinalAllocated) > Allowed for that ID from table ##TempDiscount 时制作一个 Cursor 或 While 语句来停止求和
先感谢您

最佳答案

在临时表中创建输出字段以帮助计算。
首先计算FinalAllocated没有任何限制:

WITH FinalAllocatedCTE AS (
  SELECT
      SalesOrderID
    , FinalAllocated
    , SUM(Discount) OVER (PARTITION BY DiscID ORDER BY LineTotal ASC) AS Calc_FinalAllocated
  FROM
    ##TempOrederData
)
UPDATE
  FinalAllocatedCTE
SET
  FinalAllocated = Calc_FinalAllocated

然后重置超出限制的记录:

UPDATE
  DST
SET
  FinalAllocated= 0
FROM
  ##TempOrederData AS DST
  INNER JOIN ##TempDiscount AS DISC
    ON     DST.DiscID = DISC.DiscID
       AND DST.FinalAllocated > DISC.Limit
;

现在，您可以对 FinalAllocated 中为 0 的记录执行任何操作:

DECLARE @MaxAllocated TABLE (DiscID INT, MaxAllocated DECIMAL...);

INSERT INTO MaxAllocated (DiscID, MaxAllocated)
SELECT DiscID, MAX(FinalAllocated) AS MaxAllocated FROM ##TempOrederData
;

UPDATE
  DST
SET 
    DST.FinalAllocated= MA.MaxAllocated
  , DST.Discount = 0
  , DST.Allocated = 0
FROM
  ##TempOrederData AS DST
  INNER JOIN @MaxAllocated AS MA
    ON DST.DiscID = MA.DiscID
WHERE
  TotalAllocated = 0
;

关于sql-server - Sql server for-each 或 while 行，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/62649985/

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sql-server - Sql server for-each 或 while 行