leetcode原文引用：
How would you print just the 10th line of a file?
For example, assume that file.txt has the following content:
Line 1 Line 2 Line 3 Line 4 Line 5 Line 6 Line 7 Line 8 Line 9 Line 10 Your script should output the tenth line, which is: Line 10 我的sql语句如下： SELECT d.name as department, e.name,e.salary FROM Employee e JOIN Department d ON e.departmentid = d.id and (SELECT COUNT(DISTINCT (salary)) FROM Employee WHERE departmentid = e.departmentid AND salary > e.salary ) < 3 ORDER BY d.id ASC , e.salary DESC转载于:https://www.cnblogs.com/iamconan/p/7383576.html
相关资源：数据库系统概念-原书第六版，书本示例表、数据sql文件(如instructor,department建表sql和数据)