SQL: SELECT links.linkID,title,detail,point,url,permalink,comment,DATE_FORMAT(created,'%a, %e %b %Y %k:%i:%S') AS pubdate, links_topic.topicCode, links_topic.topicName2,username,tag FROM links,links_topic WHERE links.topicID=links_topic.topicID AND user.username='nak123456789' ORDER BY created desc LIMIT 20
mysql error : Unknown column 'user.username' in 'where clause'