UNION ALL把戏ORACLE

这可能很简单，但我无法弄清楚我该怎么做。UNION ALL把戏ORACLE

所以我的代码是这样的

例如

SELECT id,total,total2 
FROM (select id, 0 AS total ,t1.total AS total2 
     FROM table1 t1 
     union ALL 
     select id, t2.total AS total, 0 AS total2 
     FRoM table2 t2)

它显示

id------total------totals 
001  0   20 
001  15   0

我想表明这样

id------total------totals 
001  15   20

我该怎么办那？

谢谢你这么多

来源

2017-07-14 supercool djkazu

大概你可以解释一下请求的上下文。您所希望的结果也可能来自表格之间的简单连接（请参见[sqlfiddle]（http://sqlfiddle.com/#!4/8b863/4）） – Insac

做一个汇总算账：

SELECT id, sum(total) as total, sum(total2) as total2 
FROM (select id, 0 AS total ,t1.total AS total2 
     FROM table1 t1 
     union ALL 
     select id, t2.total AS total, 0 AS total2 
     FRoM table2 t2 
    ) i 
GROUP BY id;

来源

2017-07-14 17:09:38

相反倾销0年代进入一些列作为填料，可以使用WITH和子查询的到的所有记录检索总和匹配Id的不同列表中的Id。

;WITH GetIds AS (
SELECT DISTINCT id 
FROM table1 
UNION 
SELECT DISTINCT id 
FROM table2 
) 
SELECT id, 
(SELECT SUM(total) FROM table1 t1 WHERE t1.id = ids.id) AS total1, 
(SELECT SUM(total) FROM table2 t2 WHERE t2.id = ids.id) AS total2 
FROM GetIds ids

来源

2017-07-14 17:28:59 Xenophage

UNION ALL把戏ORACLE

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