Second Highest Salary SQL | Dataford Interview Questions

UST Global's employee directory needs a salary review report. Write a PostgreSQL query to find employees with the second-highest distinct salary among active employees and display their department when available.

Requirements

Consider only employees whose employment_status is Active and whose salary is not NULL.
Rank distinct salary amounts from highest to lowest, then select rank 2.
Return every employee tied at the second-highest salary, including employees without a matching department.
Sort the output by salary descending and employee ID ascending.

Schema

employees

Column	Type	Description
employee_idPK	INT	Unique employee identifier
employee_name	VARCHAR(100)	Employee's full name
department_id	INT	Assigned department identifier
salary	NUMERIC(12,2)	Annual employee salary
employment_status	VARCHAR(20)	Employee's current employment status

departments

Column	Type	Description
department_idPK	INT	Unique department identifier
department_name	VARCHAR(100)	Department name
location	VARCHAR(100)	Primary department location

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