175. Combine Two Tables

Description

SQL Schema

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

My Solution

Source Code

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SELECT p.FirstName, p.LastName, a.City, a.State
FROM Person AS p
LEFT JOIN Address AS a
ON p.PersonId = a.PersonId

Analysis

This is just a simple inner join. There's not much else to say about this one. Some of the leetcode database problems are a little too easy.