Question

I have a table with a charge/credit column:

Item | PriceVal | CostVal | CHARGE_CODE 1        5             3         CH 2        8             5         CH 1       -5            -3         CR 3        7             1         CH 4       15            10         CH 1        5             3         CH 

I’ve got the query I need to get the NET price and cost, but I’m also interested in the NET charges. Right now I have:

SELECT Item, SUM(PriceVal), SUM(CostVal) FROM Table GROUP BY Item 

How do I get another column with the value

COUNT(SUM(CHARGE_CODE=CH)-SUM(CHARGE_CODE=CR)) 

I’m at a loss.

Answer 1

count() is going to count one for every value thats not null, so I don’t think thats exactly what you want. Take the count out and just take the

sum(case when charge_code = CH then costval else 0 end)  - sum(case when charge_code = 'CR' then costval else 0 end)