Discuz! Database Error

(1064) You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'group by a.medalid order by a.logid desc limit 6' at line 1
select b.geticon from user_medal as a left join medal as b on a.medalid=b.id where a.uid= group by a.medalid order by a.logid desc limit 6
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