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SQL โ€ข LESSON 78

JOIN with Multiple Columns

How can we return employee information together with department location?

Intermediateโฑ 3 Minutesโญ 910 XP
๐Ÿค” THE QUESTION

How can we return employee information together with department location?

๐Ÿ’ก WHAT IS IT?

JOIN statements project multiple attributes from both connected tables into a consolidated unified schema.

๐ŸŽฏ WHAT IS IT USED FOR?

Enriched reporting, employee directory compilation with office location details.

๐Ÿ’ป EXAMPLE
SELECT e.name, d.department_name, d.location
FROM employees e
JOIN departments d
ON e.department_id = d.department_id;

๐ŸŽฏ Mission Objectives

Practice typing production-grade SQL code for JOIN with Multiple Columns.

  • โœ“ Multi-column projection
  • โœ“ Enriched schema
  • โœ“ JOIN syntax
  • โœ“ Relational lookup