SQL CROSS JOIN
SQL CROSS JOIN returns a result set which is the number of rows in the first table multiplied by the number of rows in the second table if no WHERE clause is used along with CROSS JOIN
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join in sql
SQL FULL OUTER JOIN
SQL FULL JOIN or FULL OUTER JOIN returns rows from both left and right tables, with the matching rows from both tables where available. If there is no match, the missing side will have null values.
SQL RIGHT JOIN
SQL RIGHT JOIN or RIGHT OUTER JOIN returns all rows from the right table and the matching rows from the left table.