drop table e1 purge;
drop table e2 purge;
create table e1 as select ename,sal,hiredate
from emp where 9=0;
create table e2 as select ename,deptno,mgr
from emp where 9=0;
insert all
into e1 values(ename,sal,hiredate)
into e2 values(ename,depno,mgr)
select ename,sal,hiredate,deptno,mgr
from emp where depno=10;
select * from e1;
select * from e2;
all的含义为:emp表中的一行将插入到e1,e2中
insert first
when sal>3000 then
into e1 values(enames,sal,hiredate)
when sal>2000 then
into e2 values(ename,deptno,mgr)
select ename,sal,hiredate,deptno,mgr
from emp;
first 的含义为:一行只能给一张表,即使两个表的条件都符合。
高级dml操作,insert操作
时间: 2024-10-05 11:30:39