dede评论最多的文章排行版代码调用，并且调用第一条评论内容
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{dede:sql sql="SELECT url,arctitle,msg, count( * ) AS count FROM dede_feedback
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GROUP BY arctitle ORDER BY count DESC LIMIT 0,10"}
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"[field:url/]">[field:arctitle/][field:msg/]
"[field:url/]"
>[field:arctitle/]
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{/dede:sql}
