How to SUM total with different discount?

Question

I have a table with columns: order_id ,product and price.

I need to query the total of each order_id. And for differnt product, there are different discount.

This is my query:

declare @temp table (order_id int,product varchar(10),price int)
insert into @temp values
(1,'AA',100),(1,'AA',87),(1,'BB',56),(1,'BB',82),
(2,'AA',167),(2,'AA',43),(2,'BB',23),(2,'BB',78)

select order_id,
       case when product='AA' then SUM(price)*0.90
            when product='BB' then SUM(price)*0.85 end as total
from @temp
group by order_id,product

However, I only want one row for each order_id in the final result. How to rewrite this query?

Answer 1

Hi @Lylyy

Check this query:

select order_id
      ,SUM(case when product='AA' then price*0.90
                when product='BB' then price*0.85 end) as total
from @temp

Best regards,

Cosmog Hong

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