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  3. February 2011

Re: SQL can I do this without 2 CTE?

select
max(case when reductionFlag = '1' then rate else 0 end) as maxReduction,
max(case when surprimeFlag = '1' then rate else 0 end) as maxPremium
from mytable

Should do the trick!

Joe


Hi,

I have a transaction table with different rates that may be indicated by a flag as either a discount(reduction) or a premium(surprime).
I need the maximum of each type of rate.

I'm using

with
reductions as ( select max(rate) as max_reduction from mytable where reductionFlag = '1'),
surprimes as ( select max(rate) as max_surprime from mytable where surprimeFlag ='1')
select * from reductions join surprimes
;

But I wonder if there's a simpler way?

Thanks


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