How to Solve Find Consistently Improving Employees Problem
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Find Consistently Improving Employees
Table: employees +-------------+---------+ | Column Name | Type | +-------------+---------+ | employee_id | int | | name | varchar | +-------------+---------+ employee_id is the unique i...
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Understanding the Find Consistently Improving Employees Problem
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Problem Statement
Table: employees +-------------+---------+ | Column Name | Type | +-------------+---------+ | employee_id | int | | name | varchar | +-------------+---------+ employee_id is the unique identifier for this table. Each row contains information about an employee. Table: performance_reviews +-------------+------+ | Column Name | Type | +-------------+------+ | review_id | int | | employee_id | int | | review_date | date | | rating | int | +-------------+------+ review_id is the unique identifier for this table. Each row represents a performance review for an employee. The rating is on a scale of 1-5 where 5 is excellent and 1 is poor. Write a solution to find employees who have consistently improved their performance over their last three reviews. An employee must have at least 3 review to be considered The employee's last 3 reviews must show strictly increasing ratings (each review better than the previous) Use the most recent 3 reviews based on review_date for each employee Calculate the improvement score as the difference between the latest rating and the earliest rating among the last 3 reviews Return the result table ordered by improvement score in descending order, then by name in ascending order. The result format is in the following example.
Find Consistently Improving Employees
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