Re: repeatet summary querys per month over 5 years

On 15/03/12, sara.schaerrer@vetsuisse.unibe.ch (sara.schaerrer@vetsuisse.unibe.ch) wrote:
> Background: I have to summarize (count) the number of animals for the
> categories production type, ageclass and sex per month (1. of every
> month) over 5 years.

...

> Ideally I'd generate a table with a column for every month:
>
> nuar    ak    sex jan07     feb07    ...     dez11

You may need a query with an outer and inner part. The inner part is a
query that provides you with the base data which is summarised in the
outer part.

I couldn't read your query but if something like this worked:

    SELECT
        animal
        ,sex
        ,tochar(dater,'YYDD') as month
    FROM
        sourcetable;

you can nest the query to get the sort of result you seem to need, as
follows:

   SELECT
       x.animal
       ,x.sex
       ,sum(case when x.month='012001' then 1 else 0 end) as '012001'
       ,sum(case when x.month='022001' then 1 else 0 end) as '022001'
       ,sum(case when x.month='032001' then 1 else 0 end) as '032001'
       ...
   FROM (
        SELECT
            animal
            ,sex
            ,tochar(dater,'MMYY') as month
        FROM
            sourcetable;
        ) x
   GROUP BY
       x.animal
       ,x.sex;

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Rory Campbell-Lange
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