UPDATE wp_posts SET post_content = REPLACE( post_content,  'http://news.yandex.ru/yandsearch?cl4url=',  'http://' )

UPDATE wp_posts SET post_content = REPLACE( post_content,  '&country=Russia&cat=0',  ' ' )

UPDATE wp_posts SET post_content = REPLACE( post_content,  'Posted from',  'Полная новость ' )