select MAX(amount) as [total],
		member_ref,
		description 
from payments 
where description like '%Test%' 
group by member_ref,description 

>
>I have
>
>

>
>select sum(amount) as [total],
>		member_ref,
>		description 
>from payments 
>where description like '%Test%' 
>group by member_ref,description 
>
>

>
>how can I select out only the maximum sum amount for each member_ref .
>
>Thanks
>
>Nick