Re: aggregate functions in "SELECT"

Thanks so much, Vik.

- Gerald

On 12/3/2013 5:08 PM, Vik Fearing wrote:
> On 12/03/2013 10:44 PM, Gerald Cheves wrote:
>> Dear Colleagues,
>>
>> How can I use the COUNT variable and the COL_YES variable to calculate
>> a percentage COL_YES/COUNT*100?
>>
>> This operation isn't allowed in the "SELECT" statement.
> You'll need to use a superquery.  See below.
>
>> Select  g.STATE,
>>      g.COMPANY,
>>      g.MODEL,
>>         count(g.MODEL) as COUNT,
>>         coalesce(sum(case when COLORS = 'Yes' then 1 else 0 end),0) as
>> COL_YES
>> from gentech_12_13 as g
>> where MODEL = '0387' and COMPANY = 'ACME'
>> group by g.STATE, g.COMPANY, g.MODEL
>> ;
>>
> SELECT state, company, model, count, col_yes, 100.0*col_yes/count
> FROM (
>      Select  g.STATE,
>          g.COMPANY,
>          g.MODEL,
>             count(g.MODEL) as COUNT,
>             coalesce(sum(case when COLORS = 'Yes' then 1 else 0 end),0)
> as COL_YES
>      from gentech_12_13 as g
>      where MODEL = '0387' and COMPANY = 'ACME'
>      group by g.STATE, g.COMPANY, g.MODEL
> ) q;
>


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