Question

求用sql语句分别统计出下表中A,B,C三个类型的状态总数，金额总数和A,B,C的状态总数在全部状态数的百分比

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Answer 1

select 类型,
count(1) 分别的状态总数盯销,
sum(金额) 分凯肆类的金额总数盯则轿,
count(1)/(select count(1) from table) 状态占总状态百分比,
sum(金额)/(select sum(金额) from table)

from table group by 类型

百分比应该会有小数位的问题 截取一下就好了

Answer 2

select 类型,sum(状态) as 状态,sum(状态)*1.00/旁并(select sum(状态) as 状态sum from 表) ,
sum(金额中拍) as 金额, sum(金额)*1.00/卖启羡(select sum(金额) as 金额sum from 表) as 金额
from 表 group by 类型
很多种方法