Question

我有4个名为table1，table2，table3，table4的表。每个都有一列分别叫做x，y，z和w：

x               y               z                w
---          ------          ------            ----
1             A               120               Red
2             B                33.3             Orange
3             C                81.3              Green
4             D                 41.3              Blue

我想创建一个新表，只需要它的列，只是这些列的行顺序不变。在R（）中，我只会执行类似data.frame（x，y，z，w）的操作，但是，我不知道如何在SQL Server 2016中执行相同的操作。这些表没有公共密钥（除了它们行号当然！）。

Answer 1

你可以使用这样的东西：

WITH CTE_Table1 AS (
SELECT x, ROW_NUMBER() OVER (ORDER BY (SELECT 1)) AS x_row
FROM Table1
), CTE_Table2 AS (
SELECT y, ROW_NUMBER() OVER (ORDER BY (SELECT 1)) AS y_row
FROM Table2
), CTE_Table3 AS (
SELECT z, ROW_NUMBER() OVER (ORDER BY (SELECT 1)) AS z_row
FROM Table3
), CTE_Table4 AS (
SELECT w, ROW_NUMBER() OVER (ORDER BY (SELECT 1)) AS w_row
FROM Table4
)
SELECT x, y, z, w
FROM CTE_Table1
INNER JOIN CTE_Table2 ON CTE_Table1.x_row = CTE_Table2.y_row
INNER JOIN CTE_Table3 ON CTE_Table1.x_row = CTE_Table3.z_row
INNER JOIN CTE_Table4 ON CTE_Table1.x_row = CTE_Table4.w_row

sql从其他表中的列创建表

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