SELECT Specific Columns

How can we retrieve only the columns we actually need instead of selecting an entire table?

Beginner⏱ 2 Minutes⭐ 500 XP

🤔 THE QUESTION

How can we retrieve only the columns we actually need instead of selecting an entire table?

💡 WHAT IS IT?

SELECT specific columns instead of SELECT * to optimize network bandwidth, database memory, and query performance.

🎯 WHAT IS IT USED FOR?

Column projection, reducing I/O overhead, production queries where only a subset of attributes is required.

💻 EXAMPLE

SELECT name, department
FROM employees;

Practice typing production-grade SQL code for SELECT Specific Columns.