Question

说，我有6个临时表存储如下（这3个是样本），我想把它们组成1个单独的表，串联（标题日期，商品，价格）。

Com A
Date                      Price 
2015-05-01 00:00:00.000   34.25
2015-05-02 00:00:00.000   35.20
2015-05-03 00:00:00.000   36.70 
2015-05-04 00:00:00.000   32.37
2015-05-05 00:00:00.000   32.40
2015-05-06 00:00:00.000   32.20  


Com B
Date                      Price 
2015-05-07 00:00:00.000   54.29
2015-05-08 00:00:00.000   54.50
2015-05-09 00:00:00.000   56.21
2015-05-10 00:00:00.000   56.70
2015-05-11 00:00:00.000   58.20 

Com C
Date                      Price 
2015-05-12 00:00:00.000   34.29
2015-05-13 00:00:00.000   24.50
2015-05-14 00:00:00.000   76.21
2015-05-15 00:00:00.000   36.70
2015-05-16 00:00:00.000   48.20

输出看起来像，我想将它存储为另一个临时表，以便稍后合并：

Date                      Com   Price 
2015-05-01 00:00:00.000   A     34.25
2015-05-02 00:00:00.000   A     35.20
2015-05-03 00:00:00.000   A     36.70 
2015-05-04 00:00:00.000   A     32.37
2015-05-05 00:00:00.000   A     32.40
2015-05-06 00:00:00.000   A     32.20  
2015-05-07 00:00:00.000   B     54.29
2015-05-08 00:00:00.000   B     54.50
2015-05-09 00:00:00.000   B     56.21
2015-05-10 00:00:00.000   B     56.70
2015-05-11 00:00:00.000   B     58.20 
2015-05-12 00:00:00.000   C     34.29
2015-05-13 00:00:00.000   C     24.50
2015-05-14 00:00:00.000   C     76.21
2015-05-15 00:00:00.000   C     36.70
2015-05-16 00:00:00.000   C     48.20

Answer 1

对我来说似乎很简单union all：

SELECT [Date], 'A' as Com, Price
FROM [Com A]

UNION ALL

SELECT [Date], 'B' as Com, Price
FROM [Com B]

UNION ALL

SELECT [Date], 'C' as Com, Price
FROM [Com C]

Answer 2

根据您的样本数据

Select Date,'A' AS Com,Price from [COM A]
UNION ALL
Select Date,'B' AS Com,Price from [COM B]
UNION ALL
Select Date,'C' AS Com,Price from [COM C]

将临时表串联起来

2 个答案: