sql server多表的更新

一、插入数据

create table code1 (code varchar(8),name varchar(16))
create table code2 (code varchar(8),name varchar(16))

insert into code2(CODE) values ('1')

insert into code2(CODE) values ('2')

insert into code1 values ('1','张三')

insert into code1 values ('2','李四')

二、更新

update code2 set name=code1.name from code1 where code1.code=code2.code

对于oracle

有两种方法:

1、sql更新

update code2 set name=(selectname from code1 where code1.code=code2.code)

2、视图更新

update(select code1.name n1,code2.name n2 from code1 c1,code2 c2where c1.code=c2.code) set n2=n1