在具有SUM计算的嵌套查询中使用UNION

Question

我想将此查询的总和显示为仅一个单元格，但此处结果显示为此总计

的列

  500
  1000

但我想显示这些记录的总和（1500）

这是我的疑问：

select sum(MAL_TASWYAHESAB.MADINMONY) as'Total Sum' from MAL_TASWYAHESAB  
union 
select sum(MAL_AMRSARF_OHAD.MONY) as'Total Sum' from MAL_AMRSARF_OHAD

Answer 1

尝试这种方式：

select (select sum(MAL_TASWYAHESAB.MADINMONY) from MAL_TASWYAHESAB)
+
(select sum(MAL_AMRSARF_OHAD.MONY) from MAL_AMRSARF_OHAD) as 'Total Sum'

Answer 2

SELECT SUM(TotalSum) AS Total
FROM
(
    select MAL_TASWYAHESAB.MADINMONY as 'TotalSum' from MAL_TASWYAHESAB  
    union 
    select MAL_AMRSARF_OHAD.MONY                   from MAL_AMRSARF_OHAD
) AS t

Answer 3

select sum(MADINMONY) as'Total Sum'
from (
    select MAL_TASWYAHESAB.MADINMONY
    from MAL_TASWYAHESAB
    union MAL_AMRSARF_OHAD.MONY
    from MAL_AMRSARF_OHAD
) AS X

Answer 4

SELECT SUM(MADINMONY) as'Total Sum'
FROM (
    SELECT MAL_TASWYAHESAB.MADINMONY
    FROM MAL_TASWYAHESAB
    UNION MAL_AMRSARF_OHAD.MONY
    FROM MAL_AMRSARF_OHAD
) AS a;