问题描述
select * from temp_3
bucket values
OTIF+2 319
OTIF 24987
null 1347
OTIF+>2 515
OTIF+1 552
现在我需要这些值占我编写以下查询的总和的百分比:-
select sum(values) as total into temp_1 from temp_3
select bucket,(values/(select total from temp_1)) as score from temp_3
但这导致了以下结果:-
bucket values
OTIF+2 0
OTIF 0
null 0
OTIF+>2 0
OTIF+1 0
谁能告诉我我们如何有效地将其转换为百分比形式?我哪里出错了?
解决方法
使用窗口函数:
select bucket,value,value * 1.0 / sum(value) over ()
from t;
,
select sum(values) as total into temp_1 from temp_3
select bucket,(values * 100) /total as score from temp_3,temp_1
或者只是
select bucket,(values * 100) /sum(values) as score from temp_3