[LeetCode][SQL]Combine Two Tables

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https://leetcode.com/problems/combine-two-tables/

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

select FirstName, LastName, City, State from Person left join Address on Person.PersonId = Address.PersonId

[LeetCode][SQL]Combine Two Tables

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原文地址：http://www.cnblogs.com/Liok3187/p/4508029.html