175. 组合两个表
表1: Person
+-------------+---------+
| 列名 | 类型 |
+-------------+---------+
| PersonId | int |
| FirstName | varchar |
| LastName | varchar |
+-------------+---------+
PersonId 是上表主键
表2: Address
+-------------+---------+
| 列名 | 类型 |
+-------------+---------+
| AddressId | int |
| PersonId | int |
| City | varchar |
| State | varchar |
+-------------+---------+
AddressId 是上表主键
编写一个 SQL 查询,满足条件:无论 person 是否有地址信息,都需要基于上述两表提供 person 的以下信息:
FirstName, LastName, City, State
来源:力扣(LeetCode)
链接:https://leetcode-cn.com/problems/combine-two-tables
# Write your MySQL query statement below select FirstName, LastName, City, State from Person left join Address on Person.PersonId=Address.PersonId
# Write your MySQL query statement below select FirstName, LastName, City, State from Person left join Address on Person.PersonId=Address.PersonId