Question

I have the following MySQL line:

SELECT age, count(*) AS total FROM pacient WHERE age BETWEEN 20 AND 40 GROUP BY age ORDER BY age and I need to add an additional column to it that shows ONLY the max value of the count(*) for every row. For example:

13 2 7
18 2 7
23 5 7
24 7 7
26 6 7
32 3 7
38 1 7
41 1 7
46 4 7

This would be 3 columns and the 3rd column shows 7 since 7 was the highest number in the second column where the count(*) is made.

Answer 1

Here the solution:

select age,
    count(*),
    (select max(c) from 
        (select count(*) as c from pacient where age between 20 and 40 group by age) as x) as t 
from pacient 
where age between 20 and 40 
group by age 
order by age;