Mysql中如何批量替换某个字段的值:replace

update mxd_goods set goods_pic= replace(goods_pic, 'goods/', '');

update  mxd_goods set goods_pic= replace(goods_pic, 'g_', 'goods/g_') where goods_id=1849;

UPDATE 表A SET 字段B = replace(字段B, 'aaa', 'bbb')
example: update table set url= replace(url, 'aaa', 'bbb') 【将url字段中的aaa批量更改为bbb】
update table set url= REPLACE (url,'3','1.png') where 条件; 

update table set column='' where column is null

update `table` set `url`='0' where `url` is null