175. Combine Two Tables
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
查询person表中的每个人的地址信息，不管这些人是否有一个地址
MySQL(1128ms):
1 # Write your MySQL query statement below 2 SELECT FirstName , LastName , City , State 3 FROM Person LEFT JOIN Address 4 ON Person.PersonId = Address.PersonId ;
