Question

I have a question.

This is the query :

SELECT a.naam as "Artiest", SUM(o.numberOfOrders) as "Aantal singles",   
(SUM(o.numberOfOrders) * s.price) * 0.35 as "Winst  

FROM orders o
JOIN singles s ON s.singleid = b.singleid
JOIN artist a ON a.artistid = s.artistid
WHERE b.date= TO_DATE('15/MAY/2012','dd/mon/yyyy')
GROUP BY a.name

When I execute this query I get the error :

“not a GROUP BY expression”

I’ve already tried putting (SUM(o.numberOfOrders) * s.price) * 0.35 in the group by as well,
but then I get the error:

“group function is not allowed here”

How do I fix this?

Answer 1

You want to replace this with one of the following:

sum(o.numberOfOrders*s.price)*0.35

or:

sum(o.numberOfOrdrs)*avg(s.price)*0.35

or (maybe):

sum(o.numberOfOrdrs)*max(s.price)*0.35

In other words, s.price is not in the group by