Question

我必须尽快解决这个问题，但我是Transact-SQL的新手。

我有一个观点vStockSerialsTemp：

  Serial StockCode ActionPrice  StockName      Warehouse   ActionType
    123    P-0304    350          Galaxy S4      Centeral    Income
    456    P-0305    450          Iphone 5s      Centeral    Income
    567    P-0305    450          Iphone 5s      Centeral    Income
    123    P-0304    350          Galaxy S4      Centeral    Expense
    235    P-0304    350          Galaxy S4      Centeral    Income
    567    P-0305    450          Iphone 5s      Centeral    Expense

所以，基于这个观点，我必须创建一个新的View，它将使用相同的Serials计算每个股票的余额。我们用ActionType减去行具有相同序列的ActionType收入的费用。因此，视图应如下所示：

 Serial StockCode ActionPrice  StockName      Warehouse   ActionType
    123    P-0304    350          Galaxy S4      Centeral    Income
    456    P-0305    450          Iphone 5s      Centeral    Income
    567    P-0305    450          Iphone 5s      Centeral    Income
    123    P-0304    350          Galaxy S4      Centeral    Expense
    235    P-0304    350          Galaxy S4      Centeral    Income
    567    P-0305    450          Iphone 5s      Centeral    Expense
    -----------------------------------------------------------------
    456    P-0305    450          Iphone 5s      Centeral    Balance
    235    P-0304    350          Galaxy S4      Centeral    Balance

CREATE vStockSerials as 
SELECT * FROM [dbo].[dbo.vStockSerialsTemp]
UNION 
// Here is the problem indeed

如何从vStockSerialsTemp选择行？

Answer 1

我不知道这是不是最好的方法。但你可以这样做：

SELECT
    vStockSerialsTemp.Serial,
    vStockSerialsTemp.StockCode,
    vStockSerialsTemp.ActionPrice,
    vStockSerialsTemp.StockName,
    vStockSerialsTemp.Warehouse,
    vStockSerialsTemp.ActionType
FROM
    vStockSerialsTemp
UNION
SELECT
    vStockSerialsTemp.Serial,
    vStockSerialsTemp.StockCode,
    vStockSerialsTemp.ActionPrice,
    vStockSerialsTemp.StockName,
    vStockSerialsTemp.Warehouse,
    (
        CASE vStockSerialsTemp.ActionType
        WHEN 'Income'
        THEN 'Expense'
        ELSE 'Income'
        END 
    )AS ActionType
FROM
    vStockSerialsTemp

Answer 2

像三个产品一样（收入），两个花（费用）。收入 - 费用是剩余行（余额）......用那个试试这个：

SELECT Serial, StockCode, ActionPrice, StockName, Warehouse
FROM [dbo].[dbo.vStockSerialsTemp] Where ActionType = 'INCOME'
EXCEPT
SELECT Serial, StockCode, ActionPrice, StockName, Warehouse 
FROM [dbo].[dbo.vStockSerialsTemp] Where ActionType = 'EXPENSE'

我希望它会奏效。你可以申请点票。要将数据并排打印google for Derived table或CTE

Answer 3

结合后的这样的东西：

select a.Serial, a.StockCode, (a.ActionPrice - b.ActionPrice) as ActionPrice,
a.StockName, a.Warehouse, 'Balance' as ActionType
from [dbo].[dbo.vStockSerialsTemp] a
inner join [dbo].[dbo.vStockSerialsTemp] b
on a.Serial = b.Serial
and a.ActionType = 'Income'
and b.ActionType = 'Expense'

将相同的视图加入到自身中。一个有所有费用，另一个有所有收入。

Answer 4

根据您的预期结果，我假设您不希望显示余额为零的连续出版物的数据。

SELECT
    Serial,
    StockCode,
    ActionPrice,
    StockName,
    Warehouse,
    ActionType
FROM
    vStockSerialsTemp
UNION ALL
SELECT
    Serial,
    StockCode,
    sum(CASE WHEN ActionType = 'Income' THEN ActionPrice ELSE -ActionPrice END),
    StockName,
    Warehouse,
    'Balance'
FROM
    vStockSerialsTemp
GROUP BY
    Serial,
    StockCode,
    StockName,
    Warehouse
HAVING
    sum(CASE WHEN ActionType = 'Income' THEN ActionPrice ELSE -ActionPrice END) <> 0
ORDER BY
    ActionType DESC

从现有视图创建视图

4 个答案: