PIVOT on Common Table Expression

Question

I have a CTE as follows

WITH  details
        AS ( SELECT FldId
                   ,Rev
                   ,Words
                   ,row_number() OVER ( PAR         


        

Answer 1

You do this:

SELECT
    FldId,
    [Description],
    [Objectives],
    [Specification],
    [Requirements]
FROM (
    SELECT
        ReferenceName,
        FldId,
        REV,
        Words
    FROM CTE
    WHERE RowNumber = 1
) t
PIVOT (
    MIN(Words)
    FOR ReferenceName IN ([Description], [Objectives], [Specification], [Requirements])
) PIV

Or you can add it to your CTE, like this:

;WITH CTE2 AS (
    SELECT
        FldId,
        REV,
        [Description],
        [Objectives],
        [Specification],
        [Requirements],
        ROW_NUMBER() OVER (PARTITION BY FldId ORDER BY REV DESC) AS RowNumber
    FROM TBL
PIVOT (
        MIN(Words)
        FOR ReferenceName IN ([Description], [Objectives], [Specification], [Requirements])
    ) PIV
)

SELECT
    FldId,
    REV,
    [Description],
    [Objectives],
    [Specification],
    [Requirements]
FROM CTE2
WHERE RowNumber = 1