具有标识列值的Oracle SQL累积总和

Question

我正在使用Oracle SQL，并且尝试使用Union All将两个表与Sums合并，但是我想将两个返回的行标识为“ LIVE”和“ ACTUALS”。 我的查询的结构如下：

select
SUM(JAN_2014) as JAN_14,
SUM(FEB_2014) AS FEB_14,
SUM(MAR_2014) AS MAR_14
from table A

union all

select
SUM(JAN_2014) as JAN_14,
SUM(FEB_2014) AS FEB_14,
SUM(MAR_2014) AS MAR_14
from table B

我想要的输出将是...。

DATA_VIEW  JAN_14  FEB_14  MAR_14
ACTUALS    10      15      20
LIVE       20      20      20

谢谢你的帮助，

Answer 1

SELECT  'ACTUALS' AS DATA_VIEW,
        SUM(JAN_2014) as JAN_14,
        SUM(FEB_2014) AS FEB_14,
        SUM(MAR_2014) AS MAR_14
FROM tableA

UNION ALL

SELECT  'LIVE' AS DATA_VIEW,
        SUM(JAN_2014) AS JAN_14,
        SUM(FEB_2014) AS FEB_14,
        SUM(MAR_2014) AS MAR_14
FROM tableB