Question

please consider this image:

I have a table like this:

 Age              Active            Men/Women
 -------------------------------------------------

I want to write a query that calulate Count of every age intervals for men and women.I don’t know How I can use GROUP BY and intervals.

in my reports in left side of above image I want to calculate UnActive rows.How I can merge this to query to one query?

thanks

Answer 1

SELECT
    Active.State,
    Age.Base, Age.Base+4,
    COUNT(*) AS TotalCount,
    COUNT(CASE WHEN T.[Men/Women] = 'man' THEN 1 END) AS ManCount,
    COUNT(CASE WHEN T.[Men/Women] = 'woman' THEN 1 END) AS WomanCount
FROM
    (
    VALUES (10),(15),(20),(25),(30),(35),(40) /*.. add the rest */,(90),(95)
    ) AS Age(base)
    CROSS JOIN
    (
    VALUES (0), (1)
    ) AS Active(State)
    LEFT JOIN
    MyTable T ON T.Age BETWEEN Age.Base AND Age.Base+4 AND T.Active = Active.State
GROUP BY
    Active.State,
    Age.Base, Age.Base+4;

After this, you can format it how you want

Edited to generate empty ranges