Hi all. I need to create a block (with views module) that contain last nodes that have new comments.

The view that I have created return me this SQL:

SELECT DISTINCT(node.nid) AS nid, term_data.name AS term_data_name, term_data.vid AS term_data_vid, term_data.tid AS term_data_tid, node.title AS node_title, node.created AS node_created, node_comment_statistics.comment_count AS node_comment_statistics_comment_count, comments.timestamp AS comments_timestamp FROM node node LEFT JOIN term_node term_node ON node.vid = term_node.vid LEFT JOIN term_data term_data ON term_node.tid = term_data.tid INNER JOIN node_comment_statistics node_comment_statistics ON node.nid = node_comment_statistics.nid LEFT JOIN comments comments ON node.nid = comments.nid WHERE (node.type in ('articolo_corto', 'articolo_lungo', 'articolo_medio', 'dossier', 'story')) AND (node.status <> 0) AND (term_data.vid in ('1')) ORDER BY comments_timestamp DESC

But there is a problem: results are not unique.

Which is the correct SQL? "Group by nid" and "group by node_title" return me a non correct ordered list.

Tnx.

M.