update zw_post set log_PostTime =replace (log_PostTime, ‘1163033578‘, ‘1163033578‘) where log_ID between 1 and 100;
update 数据表 set 替换的字段 =replace (替换的字段, ‘要替换的关键字‘, ‘新的数据‘) where log_ID between 1 and 100;
原文：http://www.cnblogs.com/smesun/p/5194595.html