帝国cms用sql批量删除内容为空的文章，用下面的的sql语句：
DELETE FROM `phome_ecms_news_index`  WHERE `id` IN (SELECT id FROM `phome_ecms_news_data_1` WHERE `newstext`='');
DELETE FROM `phome_ecms_news`  WHERE `id` IN (SELECT id FROM `phome_ecms_news_data_1` WHERE `newstext`='');
DELETE FROM `phome_ecms_news_data_1`  WHERE `newstext`='';