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Explaining the Difference Between INNER JOIN and OUTER JOIN in SQL

When working with SQL databases, the main difference between INNER JOIN and OUTER JOIN lies in how they handle matching records between tables:

INNER JOIN

The INNER JOIN returns only the rows where there is at least one match in both tables being joined. It combines rows from two or more tables based on a related column between them.

OUTER JOIN

On the other hand, OUTER JOIN returns all the rows from one table and the matched rows from the other table. There are different types of OUTER JOINS: LEFT OUTER JOIN, RIGHT OUTER JOIN, and FULL OUTER JOIN, each with its specific behavior when it comes to including non-matching rows.

Overall, while INNER JOIN focuses on returning only matching rows, OUTER JOIN includes both matching and non-matching records from the tables being joined.

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