Question

我想编写一个输出a / c（除以c）的查询，该变量由名为cobrand_id的变量分组。

编写此查询的最无缝方式是什么？谢谢。

    select sum(calc) a, cobrand_id b 
from temp_08.jwn_calc 
where optimized_transaction_date > '2015-10-31' 
and optimized_transaction_date <= '2015-10-31' + 45 
GROUP BY cobrand_id

    select sum(calc) c, cobrand_id d 
from temp_08.jwn_calc 
where optimized_transaction_date > '2015-10-31' 
and optimized_transaction_date <= '2015-10-31' + 91 
GROUP BY cobrand_id

Answer 1

您可以将现有查询用作子查询，并将它们连接起来以划分a / c

Select q1.b, q1.a/q2.c as result
From (your first query) q1
Inner join (your second query) q2 on q1.b = q2.d

Answer 2

使用条件聚合：

select cobrand_id,
      Sum(case when optimized_transaction_date > '2015-10-31' 
and optimized_transaction_date <= '2015-10-31' + 45 then Calc end) /
      Sum(case when optimized_transaction_date > '2015-10-31' 
and optimized_transaction_date <= '2015-10-31' + 91 then Calc end)
from temp_08.jwn_calc 
where optimized_transaction_date > '2015-10-31' 
and optimized_transaction_date <= '2015-10-31' + 91 
GROUP BY cobrand_id

划分两个查询的输出

2 个答案: