Question

Emp_id, sal, age, exp
1        2   21   9
2        2   21   9
3        2   22   9
4        2   33   9
5        2   33   10


select sum(sal) from emp_table where age in (21,22,33,...);

Need to add some condition 
for age 21 No condition
for age 22 No condition
for age 33 exp > 10;

必需输出：sum（sal）：8 如何在oracle

中的单个查询中实现此目的

Answer 1

response

试试这个。

Answer 2

您的病情可以改写成以下形式：

select sum(sal) 
from emp_table 
where age = 21 or age = 22 or age = 33;

因此，如果您需要为每个age表达式添加任何后续条件，则将其添加到括号中并使用AND，例如像这样

select sum(sal) 
from emp_table 
where age = 21 or 
      age = 22 or 
      (age = 33 AND exp > 10);

编辑：如果你想保持IN，那么我会做以下事情：

SELECT sum(sal) 
FROM emp_table 
WHERE age IN (21, 22) OR
      (age = 33 AND exp > 10);

Answer 3

您需要将IN语句与以下行中的内容分开：

select sum(sal) from emp_table where (age = 21 AND some_condition) OR age = 22 OR (age = 33 AND exp>10)

Oralce in IN查询中的clouse

3 个答案: