Joins

Published July 26, 2025 By Sai Sree Ram Gundepudi

Introduction to Joins

Joins are used to combine rows from two or more tables based on a related column between them. Joins are essential for normalized database designs.

Types of joins:

  • INNER JOIN
  • OUTER JOIN (LEFT, RIGHT, FULL)
  • SELF JOIN
  • CROSS JOIN

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