180606_Combine

作者: 郑磊_4135 | 来源:发表于2018-06-06 09:53 被阅读0次

    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

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

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