error : SELECT senryu_table.*,member_table.nickname,member_table.pts,member_table.ranking,member_table.title,count(comment_id) AS cnum  FROM senryu_table LEFT JOIN member_table ON senryu_table.id = member_table.id LEFT JOIN comment_table ON senryu_table.senryu_id = comment_table.senryu_id WHERE genre_id!='' GROUP BY senryu_table.senryu_id ORDER BY reg_time DESC LIMIT 20 OFFSET 20<br>