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Write a solution to find the second highest distinct salary from the employee table. This query is important for applications where tracking employee ranks, calculating percentile based bonuses, or analysing hierarchical data is necessary. Each row of this table contains information about the salary of an employee.
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The result format is in the following example. This repository aims to help aspiring sql developers and enthusiasts by providing clear and concise solutions to a wide range of sql challenges. Leetcode solutions in c++23, java, python, mysql, and typescript.
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Use sub query and limit.
If there is no second highest salary, return null (return none in pandas). Use ifnull() and window function. In the inner select clause, sort the distinct salary in descending order. A collection of solutions for sql problems on leetcode, presented in sql files.
Write a solution to find the second highest salary from the employee table. The result format is in the following example. If there is no second highest salary, return null (return none in pandas). Each row of this table contains information about the salary of an employee.
Unique_salaries = employee[salary].drop_duplicates() # sort the unique salaries in descending order and get the second highest salary.
Detailed solution explanation for leetcode problem 176: We then filter out the second highest salary (where ranking = 2) using a subquery. Utilize the limit clause with offset to skip the top salary and get the second highest salary. Although this approach is clear and logical, its performance is not optimal, achieving a runtime of 877ms, beating 14.57% of leetcode submissions.
