SQL Outer Join

5.List the names and times of all runners for all 5K races (show race name) in time order. (all 5K races, even if no runners in a race)

6.List by last name the times and related race names for all runners in the Run Out club. (all runners even if runner has no race times)

7.List in club order the last names, race names and times of all members of a club in Denver who ran in a race in Kansas City. (even if member didn't run in Kansas City)