mysql為字段值添加或者去除前綴、后綴(查詢字段拼值)

添加前綴update `ecs_goods` set goods_name=concat('新中式',goods_name) where cat_id =4;

添加后綴update `ecs_goods` set goods_name=concat(goods_name,'新中式') where cat_id =4;

 

刪除

update `ecs_goods`set goods_name=right(goods_name,length(goods_name)-1) where cat_id =4;

 

其中ecs_goods為表名，cat_id為分類字段名，goods_name為產品字段名