1378. Replace Employee ID With The Unique Identifier LeetCode Solution
In this guide, you will get 1378. Replace Employee ID With The Unique Identifier LeetCode Solution with the best time and space complexity. The solution to Replace Employee ID With The Unique Identifier problem is provided in various programming languages like C++, Java, and Python. This will be helpful for you if you are preparing for placements, hackathons, interviews, or practice purposes. The solutions provided here are very easy to follow and include detailed explanations.
Table of Contents
- Problem Statement
- Complexity Analysis
- Replace Employee ID With The Unique Identifier solution in C++
- Replace Employee ID With The Unique Identifier solution in Java
- Replace Employee ID With The Unique Identifier solution in Python
- Additional Resources

Problem Statement of Replace Employee ID With The Unique Identifier
Table: Employees
+—————+———+
| Column Name | Type |
+—————+———+
| id | int |
| name | varchar |
+—————+———+
id is the primary key (column with unique values) for this table.
Each row of this table contains the id and the name of an employee in a company.
Table: EmployeeUNI
+—————+———+
| Column Name | Type |
+—————+———+
| id | int |
| unique_id | int |
+—————+———+
(id, unique_id) is the primary key (combination of columns with unique values) for this table.
Each row of this table contains the id and the corresponding unique id of an employee in the company.
Write a solution to show the unique ID of each user, If a user does not have a unique ID replace just show null.
Return the result table in any order.
The result format is in the following example.
Example not found
Constraints not found
Complexity Analysis
- Time Complexity: Google AdSense
- Space Complexity: Google Analytics
1378. Replace Employee ID With The Unique Identifier LeetCode Solution in C++
SELECT
EmployeeUNI.unique_id,
Employees.name
FROM Employees
LEFT JOIN EmployeeUNI
USING (id);
/* code provided by PROGIEZ */
1378. Replace Employee ID With The Unique Identifier LeetCode Solution in Java
N/A
// code provided by PROGIEZ
1378. Replace Employee ID With The Unique Identifier LeetCode Solution in Python
N/A
# code by PROGIEZ
Additional Resources
- Explore all LeetCode problem solutions at Progiez here
- Explore all problems on LeetCode website here
Happy Coding! Keep following PROGIEZ for more updates and solutions.