HiveQL 从员工table 中找到第二大薪水？

Question

如何使用 HiveQl 从员工 table 中找到第二大薪水？

Answer 1

我自己得到了答案。下面是从 Employee table.

获取第二个最高薪水的 HQL 查询

select firstname,salary from
    (select firstname, salary from employee sort by salary desc limit 2)
     result sort by salary limit 1;

学习愉快！！

Answer 2

    SELECT * from(select salary,row_number( ) 
    over (order by salary desc ) 
    as BLAH_no from table where group by salary) T where T.BLAH_no=2;

Answer 3

如果出现平局，则接受的答案将无效。所以下面是我的代码，适用于所有情况。只需将 row_number 替换为 dense_rank 即可。想了解更多关于 dense_rank 然后访问这个 link

select * from  (SELECT dep_name,salary,DENSE_RANK() over(ORDER BY salary desc) as rank FROM department) as A where rank = 2;

输出：

+--------+------+----------+
|dep_name|salary|     rank |
+--------+------+----------+
|      CS| 30000|         2|
|   CIVIL| 30000|         2|
+--------+------+----------+

希望对您有所帮助！

HiveQL 从员工table 中找到第二大薪水？

HiveQL to find the second largest salary from the employee table?

hive

hiveql