JOIN Operations in MySQL Workbench

• In MySQL, the JOIN operation is used to combine rows from two or more tables based on a related column between them. It allows you to retrieve data from multiple tables in a single query. There are different types of JOINs:

• INNER JOIN: Returns only the rows where there is a match in both tables based on the specified condition.

• LEFT JOIN (or LEFT OUTER JOIN): Returns all rows from the left table and the matching rows from the right table. If there's no match, NULL values are used for columns from the right table.

• RIGHT JOIN (or RIGHT OUTER JOIN): Similar to LEFT JOIN, but it returns all rows from the right table and matching rows from the left table. Non-matching rows from the right table contain NULL values.

• FULL JOIN (or FULL OUTER JOIN): Returns all rows from both tables, with NULL values in columns where there's no match.

• CROSS JOIN: Produces a Cartesian product of rows from both tables, resulting in a combination of all rows from both tables. It doesn't require a specified condition.

• To use JOINs, you typically specify the tables you want to join, the join type, and the condition for the join in the query's WHERE or ON clause. This enables you to retrieve data that's spread across different tables in a meaningful way.