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02 매출분석

select
    count(quantity) as 총주문건,
    sum(sales) as 총매출합계,
    round(avg(sales)) as 평균매출,
    max(sales) as 최고매출,
    min(sales) as 최저매출
from
    order_info;

 

select 
    count(quantity) as 총주문건수,
    sum(sales) as 총매출합계,
    
     
from order_info, (select count(*) as 온라인전용상품주문건수 from item where product_desc = '온라인_전용상품') ;


    

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