understanding "GROUP BY"

[Lionel]

I've got 32 world cup teams separated in 8 groups of 4

I am trying to display them by group

But the below query returns only the last group. When I remove the GROUP BY clause, they all display

PHP Code:

$currentteams = $DB_site->query("
SELECT *
        FROM " . TABLE_PREFIX . "cclpinternational_teams 
        WHERE disabled=1 AND name!='divadmin' AND division='$thedivision' 
        GROUP BY 'groupname'
        ORDER BY name
        "); 


What else one must know in order to get GROUP BY to display as needed?


I am really stucked. Can someone please give me a hint on how to proceed?
I managed the Group By clause to display how I wanted. However, while there is more than one element per group (in that case it should be four), it displays only one.


It consists of 8 groups with 4 teams each. I was hoping to be able to display all in same group together. I tried GROUP_CONCAT but that gives me an error.