select a.ar_id,a.ar_title,a.ar_mtitle,a.ar_summary,a.ar_timestamp,a.ar_keyword,a.ar_source FROM uv_art_tag_index i, uv_article a WHERE i.ti_tid='93' AND i.ti_article=a.ar_id AND a.ar_status=3 AND a.ar_del=0 ORDER BY ar_timestamp DESC limit -20 , 20

1064 : You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '-20 , 20' at line 1

error file : /home/news/tag.php