1、按条件筛选,然后替换
select * from phome_ecms_tv where playurl like '%关键词%';update phome_ecms_tv set myorder=REPLACE(myorder,'99','444')
2、删除含某关键词的内容
delete from phome_ecms_tv where playurl like '%关键词%'
(delete+like执行命令,当'%%'中的关键词为空时,会清空整个数据库)