When would you use a left join query?
When you want to retrieve every record from the left table, plus any matching information from the right table where it exists
When you want to retrieve all of the records from the right table that have matching records in the left table
When you want to retrieve just the records from the left table that have matching records in the right table
When you want to retrieve just the records from the left table that do not have any matching records in the right table