编写一个 SQL 查询,知足条件:不管 person 是否有地址信息,都须要基于上述两表提供 person 的如下信息:FirstName, LastName, City, Statemysql
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
select a.FirstName, a.LastName, b.City, b.State from Person a left join Address b on a.PersonId = b.PersonId
利用mysql left join组合数据
来源:力扣(LeetCode)
连接:https://leetcode-cn.com/problems/design-circular-queue
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