group by error in divide by zero problem

Hi, below is my code along with the error message which
i am getting..i basically want to divide sum(total_spend)
by count(orders)..

  can any one please re-write my code in tsql so that
it does not return any error including divide by zero..

Many Thanks
select  case when orders = 0 then 0 else ISNULL(sum(total_spend)/count(orders),0) end as [count]
		from tmp_fov
		group by custid

error - Msg 8120, Level 16, State 1, Line 1
Column 'tmp_fov.orders' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.

Open in new window

Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

select  case when count(orders) = 0 then 0 else ISNULL(sum(total_spend)/count(orders),0) end as [count]
                from tmp_fov
                group by custid

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Aneesh RetnakaranDatabase AdministratorCommented:

select ISNULL(sum(CASE WHEN orders >0 THEN total_spend ELSE 0 END )/count(orders),0) as [count]
from tmp_fov
group by custid
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Microsoft SQL Server 2005

From novice to tech pro — start learning today.