如何连接两个表并以sum的升序或降序显示结果

Question

I having great difficulty to join two table and get the result like following way .

table 1
id  |company_name   | fee

1   |company2       |1000
2   |company1       |2000
3   |company1       |4000
4   |company3       |3000


table 2

company_name    | product

company1        |A
company1        |B
company3        |c
company2        |D

And expected result should be like this..

company_name   | product | fee

company1       |A        |6000
company1       |B        |6000
company3       |C        |3000
company2       |D        |2000

Is that possible?.

Answer 1

select t1.company_name,t2.product,sum(fee) as fee from table1 t1 join table2 t2 on t1.company_name=t2.company_name group by t1.company_name,t2.product order by sum(fee) asc

I have not tested it, but it should be something around these lines. The key here is to use "sum" in combination with a group by clause of both name and product.

Answer 2

use following sql

    SELECT T1.company_name,T2.product ,sum(T1.fee) as fee from TABLE1 
    T1 INNER JOIN TABLE2 T2 ON 
T1.company_name=T2.company_name GROUP BY T2.compnat_name,T2.product