多个集合函数

我有以下脚本 -多个集合函数

select sum(duration) as duration from opr 
     where op in ('GRC','GCQ') 
     and timestamp between '20130101000000' and '20130930235959'

我得到的价值 - 秒。我想包括这些限制 - 这是持续时间

< = '18000000'（秒）应乘以0.14
'18000000' < =“27000000之间>的持续时间和'应该是乘以0.11
和持续时间> '27000000' 应乘以0.09

我试图用这个case语句 -

case when duration <= '18000000' 
     then (duration)*0.14 
     when duration > '18000000' and duration <= '27000000' 
     then (duration)*0.11 
     when duration > '27000000' 
     then (duration)*0.09 
      else 0 end as bal

不过，我收到此值乘以0.09，因为它是更大然后“27000000”，这是不是主意。这个想法是这两个操作（'GRC'，'GCQ'）所做的所有秒数与上述值相乘。

你能帮我做这个吗？

来源

2013-10-28 Kristiana

是duration一个数字或字符串？会更好地与数字进行比较，我猜：

SELECT 
    SUM(
     CASE 
     WHEN duration <= 18000000 THEN duration * 0.14 
     WHEN duration > 18000000 AND duration <= 27000000 THEN duration * 0.11 
     WHEN duration > 27000000 THEN duration * 0.09 
     ELSE 0 
     END 
    ) AS duration 
    FROM opr 
WHERE 
    op IN ('GRC','GCQ') 
    AND timestamp BETWEEN '20130101000000' AND '20130930235959' 
;

来源

2013-10-28 10:19:35

非常感谢，它的工作原理 – Kristiana

使用子查询来选择特定的持续时间并乘以您的值的持续时间，然后在该子查询上使用求和。

来源

2013-10-28 10:17:08 baltov

试试这个：

select sum(case 
     when duration <= '18000000' then (duration)*0.14 
     when duration > '18000000' and duration <= '27000000' then (duration)*0.11 
     when duration > '27000000' then (duration)*0.09 
     else 0 
    end) as bal 
from opr 
where op in ('GRC','GCQ') 
    and timestamp between '20130101000000' and '20130930235959'

来源

2013-10-28 10:18:11 P5Coder

我想你想这样做

select sum(case when duration <= '18000000' then (duration)*0.14 
       when duration > '18000000' and duration <= '27000000' then (duration)*0.11 
       when duration > '27000000' then (duration)*0.09 
       else 0 end as bal) as duration 
from opr 
where op in ('GRC','GCQ') 
and timestamp between '20130101000000' and '20130930235959'

来源

2013-10-28 10:18:37

多个集合函数

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