Question

我必须显示所有位置的当前库存以及位置名称。有四个表格表格设置包含分支详细信息，Stockinward包含位置库存以及产品ID，Product Outward包含特定产品的产品销售，ProductMaster包含产品的deatils。这是我的样本记录，我尝试了以下功能

CREATE FUNCTION [dbo].[cstock]

(

  @sID int

)

RETURNS VARCHAR(MAX)

AS

BEGIN
DECLARE @stckprdt int,@stckprdt1 int,@stockloc varchar(Max);
   select @stckprdt= SUM(Qty)from StockInward where ProductId= @sID group by  StockLocation
  select @stckprdt1=SUM(Qty)from ProductOutward where ProductId= @sID group by Location

   RETURN @stckprdt-@stckprdt1
END

GO

ProductMaster

ProductId ProductName

1          WashingMachine
2           Fridge
3            Tv
4             Laptop

设置

Id  BranchName

1      Chennai

2      Coimbatore

3      Mumbai

4     Cochin

StockInward

Id  ProductId    StockLocation    Qty

1      1             4             100
2      4             4              10
3      4              1             10
4      3              2             20
5      `1             1             10

ProductOutward

Id  ProductId    StockLocation    Qty

1        4          4              2
2         1         4              2

输出应为

orderedproducts       currentstock

Laptop(2)               Cochin(8)
                         Chennai(10)

WashingMachine(2)            Cochin(98)
                           Chennai(10)

在输出中，currentstock应显示特定地点的产品总和来自StockInward -sum产品的特定地点的产品总和来自StockOutward

Answer 1

您不需要某个功能，您可以使用这样的选择语句：

SELECT COALESCE(ProductName + 
                '(' + CAST(po.Qty as varchar(10)) + ')', 
                '')  As orderedproducts, 
       BranchName +
       '(' + CAST(si.Qty - COALESCE(po.Qty, 0) As varchar(10)) +')' As CurrentStock 
FROM ProductMaster pm 
INNER JOIN StockInward si ON(pm.ProductId = si.ProductId)
INNER JOIN Setup s ON(si.StockLocation = s.Id)
LEFT JOIN ProductOutward po ON(pm.ProductId = po.ProductId AND po.StockLocation = s.Id)
WHERE EXISTS (
  SELECT 1
  FROM ProductOutward
  WHERE ProductId = pm.ProductId
)
ORDER BY ProductName, orderedproducts DESC;

see fiddle here

<强>说明：在ProductMaster，StockInward和Setup之间使用内部联接为我提供了所有位置的所有产品。
使用该ProductOutward之间的左连接，我可以将ProductOutward.Qty添加到产品名称中利用将null值连接到sql server中的字符串的事实返回null值，我确保只有实际销售的产品才会出现在结果集中。
使用coalesce将空值显示为空字符串给出了确切的结果，因为描述了所需的结果。

<强>更新
要正确计算StockInward和/或ProductOutward中存在同一产品和位置的多个记录的值，请将查询更改为直接使用派生表而不是这些表，如下所示：

SELECT COALESCE(ProductName + 
                '(' + CAST(po.Qty as varchar(10)) + ')', 
                '')  As orderedproducts, 
       BranchName +
       '(' + CAST(si.Qty - COALESCE(po.Qty, 0) As varchar(10)) +')' As CurrentStock 
FROM ProductMaster pm 
INNER JOIN (
    SELECT ProductId, StockLocation, SUM(Qty) As Qty
    FROM StockInward 
    GROUP BY ProductId, StockLocation
) si ON(pm.ProductId = si.ProductId)
INNER JOIN Setup s ON(si.StockLocation = s.Id)
LEFT JOIN (
    SELECT ProductId, StockLocation, SUM(Qty) As Qty
    FROM ProductOutward 
    GROUP BY ProductId, StockLocation
) po ON(pm.ProductId = po.ProductId AND po.StockLocation = s.Id)
WHERE EXISTS (
  SELECT 1
  FROM ProductOutward
  WHERE ProductId = pm.ProductId
)
ORDER BY ProductName, orderedproducts DESC;

注意：您可能应该为StockInward和ProductOutward添加一个日期列，以便过去询问库存。
目前，您的数据库设计仅允许处理当前库存您甚至无法判断订单是在库存到达该地点之前还是之后放置的。

see fiddle here

Answer 2

你能试试吗

select ProductName + '('+convert(nvarchar(10),ProductOutward.Qty)+')' as orderedproducts, BranchName + '('+convert(nvarchar(10),StockInward.Qty-ProductOutward.Qty)+')' as currentstock
from ProductMaster 
inner join ProductOutward on ProductMaster.Productid = ProductOutward.productid
inner join stockinward on ProductMaster.Productid = stockinward.productid and stockinward.StockLocation = ProductOutward.StockLocation
inner join Setup on stockinward.stocklocation = Setup.id
union
select ProductName + '('+convert(nvarchar(10),0)+')' as orderedproducts, BranchName + '('+convert(nvarchar(10),StockInward.Qty)+')' as currentstock
from ProductMaster 
inner join ProductOutward on ProductMaster.Productid = ProductOutward.productid
inner join stockinward on ProductMaster.Productid = stockinward.productid and stockinward.StockLocation <> ProductOutward.StockLocation
inner join Setup on stockinward.stocklocation = Setup.id

Fiddle

编辑：对于多个Stockinwards＆amp; ProductOutwards

select ProductName + '('+convert(nvarchar(10),sum(ProductOutward.Qty)/count(distinct stockinward.id))+')' as orderedproducts
, BranchName + '('+convert(nvarchar(10),sum(StockInward.Qty)/count(distinct ProductOutward.id)-sum(ProductOutward.Qty)/count(distinct stockinward.id))+')' as currentstock

from ProductMaster 
inner join ProductOutward on ProductMaster.Productid = ProductOutward.productid
inner join stockinward on ProductMaster.Productid = stockinward.productid and stockinward.StockLocation = ProductOutward.StockLocation
inner join Setup on stockinward.stocklocation = Setup.id

where ProductName = 'laptop'
group by productname,Setup.BranchName--,stockinward.id


union

select ProductName + '('+convert(nvarchar(10),0)+')' as orderedproducts, BranchName + '('+convert(nvarchar(10),sum(StockInward.Qty))+')' as currentstock
from ProductMaster 
inner join ProductOutward on ProductMaster.Productid = ProductOutward.productid
inner join stockinward on ProductMaster.Productid = stockinward.productid and stockinward.StockLocation <> ProductOutward.StockLocation
inner join Setup on stockinward.stocklocation = Setup.id
where ProductName = 'laptop'
group by ProductName,ProductOutward.Qty,BranchName

检查出来：

select ProductName + '('+convert(nvarchar(10),sum(ProductOutward.Qty)/count(distinct stockinward.id))+')' as orderedproducts
, BranchName + '('+convert(nvarchar(10),sum(StockInward.Qty)/count(distinct ProductOutward.id)-sum(ProductOutward.Qty)/count(distinct stockinward.id))+')' as currentstock

from ProductMaster 
inner join ProductOutward on ProductMaster.Productid = ProductOutward.productid
inner join stockinward on ProductMaster.Productid = stockinward.productid and stockinward.StockLocation = ProductOutward.StockLocation
inner join Setup on stockinward.stocklocation = Setup.id

where ProductName = 'laptop'
group by productname,Setup.BranchName--,stockinward.id

union 

select ProductName + '('+convert(nvarchar(10),sum(ProductOutward.Qty))+')' as orderedproducts
, BranchName + '(0)' as currentstock

from ProductMaster 
inner join ProductOutward on ProductMaster.Productid = ProductOutward.productid
inner join Setup on ProductOutward.stocklocation = Setup.id

where ProductName = 'laptop' and ProductMaster.ProductId not in (select stockinward.productid from stockinward where stockinward.stocklocation = ProductOutward.stocklocation)
group by productname,Setup.BranchName--,stockinward.id

union 

select ProductName + '(0)' as orderedproducts
, BranchName + '('+convert(nvarchar(10),sum(stockinward.Qty))+')' as currentstock

from ProductMaster 
inner join stockinward on ProductMaster.Productid = stockinward.productid
inner join Setup on stockinward.stocklocation = Setup.id

where ProductName = 'laptop' and ProductMaster.ProductId not in (select ProductOutward.productid from ProductOutward where ProductOutward.stocklocation = stockinward.stocklocation)
group by productname,Setup.BranchName--,stockinward.id

与sql中各列的减法相加

2 个答案: