Another way

with cte as (

select [State], County, Sex, class,

case when Agegroup in ('15-17 yrs', '18-20 yrs', '21-24 yrs') then '15-24 yrs' else Agegroup end AS [Agegroup],

[total]

from #temp)

select [State], County, Sex, class, Agegroup, sum(total) AS [total]

from cte

group by [State], County, Sex, class, Agegroup

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Deja View - The strange feeling that somewhere, sometime you've optimised this query before

How to get the best help on a forum

http://www.sqlservercentral.com/articles/Best+Practices/61537