Leosan Posted February 15, 2011 Share Posted February 15, 2011 I am writing a forum system, and I am working on the new posts portion. Everything is working fine but it lists multiple "duplicate" topic rows when a topic as 2 or more new posts. What I want to do is basically limit the sql to prevent a row being outputted if the field topic_id is duplicate. e.g I want to cut topic_id 3 topic_id 2 topic_id 2 topic_id 1 to topic_id 3 topic_id 2 topic_id 1 Quote Link to comment Share on other sites More sharing options...
eevan79 Posted February 15, 2011 Share Posted February 15, 2011 Have you tried GROUP BY topic_id http://dev.mysql.com/doc/refman/5.0/en/group-by-functions.html Quote Link to comment Share on other sites More sharing options...
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