What join methods in SQL do you know?

In SQL, there are several main types of joins that allow you to combine data from two or more tables:

• INNER JOIN — returns only the records that have matches in both tables.
• LEFT JOIN (LEFT OUTER JOIN) — returns all records from the left table and matching records from the right; if there are no matches, NULLs will appear on the right side.
• RIGHT JOIN (RIGHT OUTER JOIN) — similar to LEFT JOIN, but returns all records from the right table.
• FULL JOIN (FULL OUTER JOIN) — returns all records from both tables, with NULLs in the fields where there are no matches.
• CROSS JOIN — Cartesian product of two tables, returning all possible combinations of rows.

Example of INNER JOIN:

SELECT employees.name, departments.name
FROM employees
INNER JOIN departments ON employees.department_id = departments.id;