• DROP TABLE #Employee

    CREATE TABLE #Employee (ID INT, Name VARCHAR(10), Age INT, Country CHAR(2), Manager VARCHAR(10), Status CHAR(1));

    INSERT INTO #Employee (ID, Name, Age, Country, Manager, Status)

    SELECT 1,'Ravi',29,'IN','Anil','A' UNION ALL

    SELECT 2,'Balaji',30,'IN','Siju','A' UNION ALL

    SELECT 3,'Sanjeev',31,'IN','Venkat','A'

    SELECT ID, Name, Age, NewColumn

    FROM ( -- derived table is unnecessary if Seq is acceptable in output

    SELECT ID, Name, Age, NewColumn = CAST(Country AS VARCHAR(10)), 1 AS Seq

    FROM #Employee

    UNION ALL

    SELECT ID, Name, Age, NewColumn = CAST(Manager AS VARCHAR(10)), 2 AS Seq

    FROM #Employee

    UNION ALL

    SELECT ID, Name, Age, NewColumn = CAST(Status AS VARCHAR(10)), 3 AS Seq

    FROM #Employee

    ) d

    ORDER BY ID, Seq

    “Write the query the simplest way. If through testing it becomes clear that the performance is inadequate, consider alternative query forms.” - Gail Shaw

    For fast, accurate and documented assistance in answering your questions, please read this article.
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    Hidden RBAR: Triangular Joins / The "Numbers" or "Tally" Table: What it is and how it replaces a loop Jeff Moden