UPDATE dede_addonarticle SET body = REPLACE( body, ‘aaa‘, ‘bbb‘ );
UPDATE dede_addonarticle SET seotitle = REPLACE( seotitle, ‘aaa‘, ‘bbb‘ );
UPDATE dede_archives SET title = REPLACE( title, ‘aaa‘, ‘bbb‘ );
原文：http://www.cnblogs.com/zff193/p/3937264.html