Sql 在Oracle查询中减去两个数字列值
我需要减去两列值并在select查询中显示输出列Sql 在Oracle查询中减去两个数字列值,sql,oracle,Sql,Oracle,我需要减去两列值并在select查询中显示输出列 SELECT c.name, (SELECT SUM(p.qty*s.price) FROM stock s, purchase p WHERE s.company = p.company GROUP BY p.company) MINUS (SELECT SUM(p.price*p.qty) FROM stock s, purchase p WHERE s.comp
SELECT c.name,
(SELECT SUM(p.qty*s.price)
FROM stock s, purchase p
WHERE s.company = p.company
GROUP BY p.company)
MINUS
(SELECT SUM(p.price*p.qty)
FROM stock s, purchase p
WHERE s.company = p.company
GROUP BY p.company) AS "Profit/Lost"
FROM purchase p, client c, stock s
WHERE s.company = p.company
AND c.clno = p.clno
GROUP BY p.company;
但它将显示一个错误。如何解决?第一个子查询需要别名 但为什么要使用子查询呢? 这是你想要的吗
SELECT c.name, p.company,
SUM(p.qty*s.price) - SUM(p.price*p.qty) roe
FROM client c
join purchase p on p.clno = c.clno
join stock s on s.company = p.company
GROUP BY c.name, p.company;
您的查询有太多问题,没有地方可以开始。你应该提供样本数据和期望的结果。你混淆了
减号的作用;它删除多组行;听起来您只需要两列的算术-
。但戈登是对的;我们需要样品数据和样品所需的输出。谢谢。类似的东西。