What are the Different Types of Joins and How do They Work?
Using an inner join, records from both tables with matching values are retrieved.
All records from the left table and matched records from the right table are retrieved using a left join, also known as a left outer join. Records from the right table that don't match will be NULL.
All records from the right table and matched records from the left table are retrieved using a right join, also known as a right outer join. Records from the left table that don't match will be NULL.
When there is a match in either the left or right table, records are retrieved using a full join (full outer join). Records from both tables that don't match will be NULL.
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