Last updated on October 9th, 2024 at 10:46 pm

This Leetcode problem Project Employees II LeetCode Solution is done in SQL.

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Project Employees II LeetCode Solution

Problem Statement

(project_id, employee_id) is the primary key of this table. employee_id is a foreign key to Employee table. Each row of this table indicates that the employee with employee_id is working on the project with project_id.

employee_id is the primary key of this table. It’s guaranteed that experience_years is not NULL. Each row of this table contains information about one employee.

Write an SQL query that reports all the projects that have the most employees.

The query result format is in the following example:

Example 1:
Input:

Output:

Explanation: The first project has 3 employees while the second one has 2.

1. Project Employees II LeetCode Solution MySQL

select 
  project_id 
from 
  Project 
group by 
  project_id 
having 
  count(employee_id) >= (
    select 
      count(employee_id) as cnt 
    from 
      Project 
    group by 
      project_id 
    order by 
      cnt desc 
    limit 
      1
  );