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Asked: 2026-05-26T20:35:36+00:00

My question is surely banal but i can’t set up an sql query that

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My question is surely banal but i can’t set up an sql query that allows me to make a list of top 3 countries for a sport-event summary table.
I explain me better: in a sport event i have a lot of athletes from different countries and i need to produce a summary table showing countries that won more medals.
Here is an example:

--------------------------------------------
|id |     name    |   activity  | country  |
--------------------------------------------
| 1 |  John       |   100m      |  USA     |
| 2 |  Andy       |   200m      |  CANADA  |
| 3 |  Frank      |   400m      |  USA     |
| 4 |  Ian        |   400m      |  GERMANY |
| 5 |  Anthony    |   100m      |  USA     |
| 6 |  Eric       |   400m      |  CANADA  |
| 7 |  Mike       |   200m      |  UK      |
| 8 |  Dave       |   200m      |  GERMANY |
| 9 |  Richard    |   100m      |  USA     |
| 10|  Max        |   100m      |  USA     |
| 11|  Randy      |   100m      |  USA     |
| 12|  Maurice    |   400m      |  CANADA  |
| 13|  Col        |   100m      |  UK      |
| 14|  Jim        |   400m      |  USA     |
| 15|  Adam       |   200m      |  BRAZIL  |
| 16|  Ricky      |   100m      |  UK      |
| 17|  Emily      |   400m      |  USA     |
| 18|  Serge      |   200m      |  UK      |
| 19|  Alex       |   400m      |  FRANCE  |
| 20|  Enamuel    |   100m      |  USA     |
--------------------------------------------

The summary table i wish to obtain is the following:

Top 3 countries

--------------------------------------
| position |    country    | medals  |
--------------------------------------
|     1    |     USA       |    9    |
|     2    |     UK        |    4    |
|     3    |     CANADA    |    3    |
--------------------------------------

How can build the qsl query?
Thanks in advance for your kind answer.

Mattew

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1 Answer

  1. Editorial Team

    Without the position column, this is quite easy. Just do the following

    SELECT Country,COUNT(*) AS medals
FROM MyTable
GROUP BY Country
ORDER BY COUNT(*) DESC
LIMIT 3;

    There is some more complicated code for getting the “position” column out, but unless you need it, it probably isn’t necessary, and you can just get those numbers using a counter on the processing code. If you’re interested, the code would be something like this. 

    SELECT @rownum:=@rownum+1 AS Position,Country,Medals FROM
(
SELECT Country,COUNT(*) AS medals
FROM Medals
GROUP BY Country
ORDER BY COUNT(*) DESC
LIMIT 3
) AS Stats, (SELECT @rownum:=0) RowNum;

    The above query has been tested and appears to be working as you need it to be.

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