Getting the last nationality for an employee

Question

I am trying to get the list of employees and their nationalities :

 select concat([Firstname],[Lastname]) as \'Full name\',[C].[Label] as \'Nationality\' FROM [         


        

Answer 1

Use ROW_NUMBER:

WITH cte AS (
    SELECT CONCAT([Firstname], [Lastname]) AS full_name,
        [C].[Label] AS Nationality,
        ROW_NUMBER() OVER (PARTITION BY E.EmployeeId ORDER BY UpdateDate DESC) rn
    FROM [Employee] [E]
    LEFT JOIN [AF_AdminFile] [AFA]
        ON E.AdminFileId = AFA.AdminFileId
    LEFT JOIN [AF_Nationality] [AFN]
        ON AFN.AdminFileId = AFA.AdminFileId
    LEFT JOIN [Country] [C]
        ON AFN.CountryId = C.ID
)

SELECT
    full_name,
    Nationality
FROM cte
WHERE rn = 1;