Question

oracle表中如何查询入职时间最早的员工？

Answer 1

SELECT * FROM 表名 ORDER BY 入职时间 ASC

追问

只要查出一条结果

Answer 2

select c.* from (
select rownum rn,b.* from (select e.* from emp e order by e.hiredate asc) b) c where c.rn=1;