select with group by with criteria

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select with group by with criteria

Author

Topic

esthera
Master Smack Fu Yak Hacker

1410 Posts

Posted - 2011-10-06 : 06:33:14

I now have

select ddi,count(d),sum(duration),sum(rate) from #stats group by ddi

I want to add another count that counts how many fields for the same ddi have a null rate

How can I do this within the select statement?

webfred
Master Smack Fu Yak Hacker

8781 Posts

Posted - 2011-10-06 : 06:45:42

Try:
select
ddi,
count(d),
sum(duration),
sum(rate),
sum(case when rate IS NULL then 1 else 0 end) as NULLrate
from #stats
group by ddi

No, you're never too old to Yak'n'Roll if you're too young to die.