Leetcode Problem 1378. Replace Employee ID With The Unique Identifier

1378. Replace Employee ID With The Unique Identifier

Leetcode Solutions

Left Join to Merge Employee Data with Unique IDs

  1. Perform a LEFT JOIN operation on the Employees and EmployeeUNI tables using the id column as the join key.
  2. Select the unique_id from the EmployeeUNI table and the name from the Employees table.
  3. Ensure that employees without a unique ID have null displayed in the unique_id field.
  4. Return the result set with the unique_id and name columns.
erDiagram
    Employees {
        int id PK
        varchar name
    }
    EmployeeUNI {
        int id PK
        int unique_id
    }
    Employees ||--o{ EmployeeUNI : has

Ask Question

Programming Language
image/screenshot of info(optional)
Full Screen
Loading...

Suggested Answer

Answer
Full Screen
Copy Answer Code
Loading...