Question

I’m having an absolute brain breakdown with this SQL query, I’m hoping someone can shine some light with what I should be doing.

I have the following tables and they are linked by “anumber”;

athletes
--------
anumber     (id)
acountry    ('Australia','Japan')
aname

result_placing
--------------
result_id       id
anumber         (id linked to athletes)
result_placing  (Gold, Silver or null)

I would like to get a list of countries with how many gold, silver results associated. so output like:

country     | resul_placing | result_count
----------- | ------------- | ------------
Australia   | Gold          |       2
Australia   | Silver        |       1

I tried something like this:

SELECT      acountry 
FROM        athletes 
INNER JOIN  result_placing 
ON          athletes.anumber = result_placing.anumber

Which shows

 Australia | Gold   |
 Australia | Silver |

Just not sure how to get the count of each. I tried count(distinct) but Access doesn’t like it.

As soon as I use Count in it like:

SELECT      a.acountry
        ,   r.placing
        ,   count(a.acountry) 
FROM        athlete         a 
INNER JOIN  result_place    r 
ON          a.anumber       = r.anumber

I receive:

You tried to execute a query that does not include the specified expression 'acountry' as part of an aggregate function

Answer 1

Try

SELECT      a.acountry
        ,   r.result_placing
        ,   sum(*) as cnt 
FROM        athletes        a 
RIGHT JOIN  result_placing  r 
ON          a.anumber       = r.anumber 
GROUP BY    a.acountry
        ,   r.result_placing 
ORDER BY    a.acountry