Question

由于必须在group子句中指定所有列以选择子句，因此我无法避免它。但有什么方法可以隐藏吗？

SELECT c.name, 
       p.company, 
       SUM(p.qty) as "Total Shares",
       AVG(p.qty*p.price) as "Average Of Total Shares"
  FROM purchase p, client c
 WHERE c.clno = p.clno
 GROUP BY company, 
          name;

我需要隐藏p.company。有谁能提出一个想法？

Answer 1

请勿将其包含在select子句中（即使它出现在Group BY子句中）。

SELECT 
c.name,  
SUM(p.qty) as "Total Shares",
AVG(p.qty*p.price) as "Average Of Total Shares" 
FROM purchase p, client c 
WHERE c.clno = p.clno 
GROUP BY company, name;

在Oracle的select查询中隐藏列

1 个答案: