Select specific columns — SQL

Problem

Select only Name and Salary from employees.

Hints

SELECT Name, Salary FROM Employees

Your practice code

Ready — edit the code above and click Run.

Solution

-- Sample schema
CREATE TABLE Employees (Id INT, Name TEXT, DeptId INT, Salary INT);
CREATE TABLE Departments (Id INT, Name TEXT);
INSERT INTO Employees VALUES (1,'Ali',1,90000),(2,'Sara',2,120000),(3,'Raj',1,75000);
INSERT INTO Departments VALUES (1,'Engineering'),(2,'Sales');
SELECT Name, Salary FROM Employees;

Try solving on your own first, then reveal the official answer.

Explanation

Projection reduces data transfer—important for API/ORM performance.