Oracle

语法及其应用: 查询部门创建时间最早的三条记录 select * from ( select * from dept t order by t.cdate ) where rowmun=2 and r1; 统计平均奖金大于2000 的各个职位的最高工资 select job,max(comm) from emp1 e group by e.job having avg(...
posted @ 2017-12-27 15:25  酷酷的飞  阅读(180)  评论(0编辑  收藏  举报