梳理臨時表的系列

Question

說，我有6個臨時表存儲爲如下（這3個樣本），我會形成他們到一個單一的表，以串聯（標題日期，通訊，價格）。

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 

輸出的樣子，我想將其存儲爲另一個臨時表中供以後合併：根據您的樣本數據

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

似乎是一個對我來說簡單的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

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]