Question

以下列有两个表：

table1: asin_details(asin,contact_id) primary key: contact_id
table2: contact_details(contact_date,contact_id,hmd_response(y or n)) primary key: contact_id

我要使用名为no的公式从上述数据中找到特定的百分比。是/否y的* 100被称为"FRR"

所以，实际的问题是找到客户在01-jan-2013 and 31-dec-2013

之间与我们联系的所有asin的“FRR”

我实际上正在努力处理您需要从上面提供的日期计算"FRR"的部分。请帮忙。

谢谢，

Answer 1

SELECT (( select count(hmd_response) from contact_details where hmd_response= 'n')/( select count(hmd_response) from contact_details where hmd_response= 'y') )*100 as FRR
from asin_details A
join contact_details C
on c.contact_id = A.contact_id
where contact_date between '01-jan-2013' and '31-dec-2013'

OR

SELECT ( ( select count(hmd_response) from contact_details where hmd_response= 'n' 
AND between '01-jan-2013' and '31-dec-2013')/
( select count(hmd_response) from contact_details where hmd_response= 'y' 
AND between '01-jan-2013' and '31-dec-2013') )*100 as FRR

试试看，告诉我。

我基本上计算y和n的计数，然后我计算FRR。

Answer 2

应该是这样的：

SELECT
a.asin,
((count(case c.hmd_response when 'n' then 1 end) / 
count(case c.hmd_response when 'y' then 1 end)) * 100) as FRR,
a.contact_id
from asin_details a
join contact_details c
on a.contact_id = c.contact_id
where c.contact_date between '01-jan-2013' and '31-dec-2013'

SQL QUERY - 需要帮助来查找特定百分比

2 个答案: