Re: repeatet summary querys per month over 5 years

On 15/03/12, sara(dot)schaerrer(at)vetsuisse(dot)unibe(dot)ch (sara(dot)schaerrer(at)vetsuisse(dot)unibe(dot)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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