• create table #temp (ID int, Name varchar(20))

    insert into #temp

    values

    (10, 'Helen'),

    (20, 'Joe'),

    (30, 'Blake');

    ;WITH OnlyHelen AS (

    SELECT CTE = 1, *

    FROM #temp

    WHERE Name = 'Helen'

    ),

    ExceptHelen AS (

    SELECT CTE = 2, *

    FROM #temp

    WHERE Name <> 'Helen'

    )

    SELECT *

    FROM OnlyHelen

    UNION ALL

    SELECT *

    FROM ExceptHelen

    “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.
    Understanding and using APPLY, (I) and (II) Paul White
    Hidden RBAR: Triangular Joins / The "Numbers" or "Tally" Table: What it is and how it replaces a loop Jeff Moden