Table: Person
+-------------+---------+ | Column Name | Type | +-------------+---------+ | PersonId | int | | FirstName | varchar | | LastName | varchar | +-------------+---------+ PersonId is the primary key column for this table.
Table: Address
+-------------+---------+ | Column Name | Type | +-------------+---------+ | AddressId | int | | PersonId | int | | City | varchar | | State | varchar | +-------------+---------+ AddressId is the primary key column for this table.
Write a SQL query for a report that provides the following information for each person in the Person table, regardless if there is an address for each of those people:
FirstName, LastName, City, State
1 # Write your MySQL query statement below 2 SELECT FirstName, LastName, City, State 3 FROM Person LEFT OUTER JOIN Address 4 ON Person.PersonId = Address.PersonId;
这里Person表某个人在Address表里可能会没有相应的地址，所以需要用到外部联结。