Database Interview Questions – Easy 1

This question handled from https://leetcode.com/problems/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

Solution is explained in detail below video:

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I am a dad of two wonderful boys, Utku Efe and Omer Eren, and married with Elif. In addition, I am an academician and AI/ML scientist because I worked more than 15 years in universities, have M.S and Ph.D. thesis and more than 20 scientific papers/presentations and 100 citations. Now people call me as a Principal Developer in my last company :).
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