How do you pass parameters to stored procedures?

Short answer: Stored procedures allow you to pass parameters to them, either input or output parameters. Input Parameters: These allow you to send data to the procedure. Output Parameters: These allow the procedure to send data back to the caller.

Example code

SQL Server: CREATE PROCEDURE GetEmployeeSalary (@emp_id INT) AS BEGIN SELECT salary FROM employees WHERE id = @emp_id; END; Calling the procedure: EXEC GetEmployeeSalary @emp_id = 101; MySQL: DELIMITER // CREATE PROCEDURE GetEmployeeSalary(IN emp_id INT) BEGIN SELECT salary FROM employees WHERE id = emp_id; END // DELIMITER ; Calling the procedure: CALL GetEmployeeSalary(101);

Real-world example (ShopNest)

ShopNest’s SQL Server database stores customers, products, and orders. Good indexes and clear foreign keys keep checkout queries fast and safe.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.