DB Error: no such field

SQL:SELECT * FROM yukao_news,yukao_newsText LEFT JOIN yukao_category ON yukao_category.categoryID = yukao_news.categoryID WHERE newsStatus=1 AND newsDate <= curdate() AND ( limitDate > curdate() OR limitDate = '0000-00-00') AND yukao_news.newsID = yukao_newsText.newsID AND ( yukao_news.categoryID=1 ) AND yukao_newsText.imageName!='' AND fileType='image' GROUP BY yukao_newsText.newsID ORDER BY rand() limit 0,3