report fraction in sql

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October 18th, 2003, 10:50 PM

jennyyang

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report fraction in sql

Hi,
How can I report the fraction of certain item in SQL?
For example:
select count(*)/sum(count (*))
from...
group by...
But it is not allowed of multifuntion in oracle like above. Is there any other way to do this?
Thank you very much for your kind help!

October 19th, 2003, 07:54 AM

r937

SQL Consultant

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which item?

something like this:

Code:

select sum(case when columnX='foo' then 1 else 0 end)
     / count(*) as fraction
  from yourtable

rudy

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