SELECT a.id,a.title,a.timestamp,a.keywords,a.summary,a.category_id,a.reporter_name,a.urlinfo
FROM bh_articles a, cate_forex i WHERE i.technical='6' AND a.id=i.article_id ORDER BY a.timestamp DESC LIMIT 50,-49
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 '-49' at line 2