Question

I have a simple query:

SELECT stco, sum(STSD) As "Shipped Dollars"
FROM MSTDW 

This says there is something wrong with the select column stco.

However, both fields exist and this:

SELECT stco
FROM MSTDW 

works and this

SELECT sum(STSD) As "Shipped Dollars"
FROM MSTDW 

Works too.

What could be wrong with having both?

Thanks

Answer 1

I think you want this, a group by, to get the sum of each stco

SELECT stco, sum(STSD) As "Shipped Dollars"
FROM MSTDW 
group by stco

For apply aggregate functions you need to group; anyway, if you just want the sum of ALL column (I don’t think you want that, but I add it just in case) do

SELECT stco, (select sum(STSD) from MSTDW) As "Shipped Dollars"
    FROM MSTDW 
    group by stco

This will list each stco, and repeat the sum of all column