Oracle命令和分页

select * from tab;

desc tableName;

create view 视图名称 as 查询语句()

create view empview as select empno,ename,job,sal from emp where deptno=10;

cerate or replace 视图名称 as 子查询

select rownum rn, t.* from t_user
(
select rownum, * from t_user where id <> 'root' order by id
) t where rownum <=2;

select * from
(
select rownum rn, t.* from t_user
(
select * from t_user where id <> 'root' order by id;
) t where rownum <=4
) where rn>2