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SQL โ€ข LESSON 57

DISTINCT Multiple Columns

How can we find unique department and job combinations?

Beginnerโฑ 3 Minutesโญ 700 XP
๐Ÿค” THE QUESTION

How can we find unique department and job combinations?

๐Ÿ’ก WHAT IS IT?

Applying DISTINCT across multiple columns evaluates uniqueness across the combination of all specified fields.

๐ŸŽฏ WHAT IS IT USED FOR?

Cataloging unique role allocations, finding distinct product/warehouse pairings.

๐Ÿ’ป EXAMPLE
SELECT DISTINCT department, job_title
FROM employees;

๐ŸŽฏ Mission Objectives

Practice typing production-grade SQL code for DISTINCT Multiple Columns.

  • โœ“ Multi-column DISTINCT
  • โœ“ Unique tuples
  • โœ“ Role matrix
  • โœ“ Output deduplication