以下是我的询问:
select sum(tableA.value)+sum(tableB.value1) )
from tableA,tableB
where tableA.data between '2016-01-21' and '2016-03-09'
and tableB.date2 between '2016-01-21' and '2016-03-09'
但是当行数不同时,结果是错误的。 示例 tableA.value = 2 和 tableB值= 3和5 结果= 12
这是错误的。结果应该是10
答案 0 :(得分:0)
请尝试以下查询
SELECT
SUM(A.value) OVER (PARTITION BY A.date order by A.date) +
SUM(B.value) OVER (PARTITION BY B.date order by B.date)
FROM
(select value, date from tableA where date between '2016-01-21' and '2016-03-09')A --2, d1
CROSS JOIN
(select value, date from tableB where date between '2016-01-21' and '2016-03-09')B --3,d2 and 5,d3
--Result of CROSS JOIN is below
--2,d1,3,d2
--2,d1,5,d3
-- which gives result as
--2+8=10
答案 1 :(得分:0)
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