Select records based on column priority

Question

First of all, the title of this question is horrible, but I didn\'t find a better way to describe my issue.

There\'s probably a very easy way to do this, but I couldn\'t

Answer 1

You can have it like this

WITH PriorityTable
AS
(
    SELECT T.*,
        ROW_NUMBER() OVER (PARTITION BY T.ID
                            ORDER BY PT.ColorPriority )  PriorityColumn
    FROM XX AS T
    INNER JOIN (
        SELECT 'RED' AS f_COLOUR , 1 AS ColorPriority
        UNION
        SELECT 'GREEN' AS f_COLOUR , 2 AS ColorPriority
    ) AS PT
        ON T.f_COLOUR  = PT.f_COLOUR 
)

SELECT * FROM PriorityTable
WHERE PriorityColumn = 1