--创建表
create table emp3
as
select employee_id,last_name,hire_date,salary
from employees--查询表
select * from emp3--插入表
insert into emp3
values(1001,'AA',sysdate,10000)

运行结果

插入对应三项

--空值用null代替
--复制表
insert into emp3(last_name,employee_id,hire_date)
select last_name,employee_id,hire_date
from employees where department_id=80

运行结果

--创建脚本
insert into emp3(last_name,employee_id,hire_date)
values('&name',&id,'&hire_date')

运行结果

--更新数据
update emp3
set salary=12000
where employee_id=179

运行结果

--更新114he1205工资一样
update employees set job_id=(
select job_id from employees
where employee_id=205
),salary=(
select salary from employees where employee_id=205)where employee_id=114

运行结果