commit: 175

Author: hijiangtao

README.md

@@ -4,5 +4,6 @@
 |---| ----- | -------- | ---------- |
 |1|[Two Sum](https://leetcode.com/problems/two-sum/) | [JavaScript](./src/two-sum/res.js)|Easy|
 |2|[Add Two Numbers](https://leetcode.com/problems/add-two-numbers/) | [JavaScript](./src/add-two-numbers/res.js)|Medium|
+|175|[Combine Two Tables](https://leetcode.com/problems/combine-two-tables/)| [SQL](./src/combine-two-tables/res.txt)|Easy|
 |181|[Employees Earning More Than Their Managers](https://leetcode.com/problems/employees-earning-more-than-their-managers/) | [SQL](./src/employees-earning-more-than-their-managers/res.txt)|Easy|
 |434|[Number of Segments in a String](https://leetcode.com/problems/number-of-segments-in-a-string/) | [JavaScript](./src/number-of-segments-in-a-string/res.js)|Easy|

src/combine-two-tables/res.txt

@@ -0,0 +1,28 @@
+-- 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
+
+# Write your MySQL query statement below
+SELECT a.FirstName, a.LastName, b.City, b.State from Person a left join Address b ON a.PersonId = b.PersonId;