摘要: 查询员工表中薪水从高到低排序的第5~9条记录 SELECT * FROM (SELECT e.*,rownum rn FROM (SELECT * FROM employee ORDER BY sal DESC) e) WHERE rn>=5 AND rn<=9; SELECT * FROM (SE 阅读全文
posted @ 2017-07-29 11:08 我i编程 阅读(143) 评论(0) 推荐(0) 编辑