oracle 随笔

oracle分页

 select * from (select a1.*, rownum rn  from (select *from emp) a1 where rownum<=10) where rn>=6;

 首字母大写的的方式显示所以的员工的姓名

第一种方法

1.完成首字母大写
select upper(substr(ename,1,1)) from emp;

2.完成首字母小写
select lower(substr(ename,2,length(ename)-1)) from emp;

3.合并

select upper(substr(ename,1,1))||lower(substr(ename,2,length(ename)-1)) from emp;

 第二种方法

select initcap('ename') from emp;