Debe combinar las etiquetas antes del PIVOT. La lista de columnas también debe tener en cuenta la unión cruzada de las posibilidades de etiqueta:
SET NOCOUNT ON ;
DECLARE @pivot_cols AS varchar(max) ;
DECLARE @src AS TABLE
(
ID int NOT NULL
,Label varchar(14) NOT NULL
,Numerator int NOT NULL
,Denominator int NOT NULL
,Ratio decimal(5, 4) NOT NULL
) ;
DECLARE @label_order AS TABLE
(
Label varchar(14) NOT NULL
,Sort int NOT NULL
)
DECLARE @sub_label_order AS TABLE
(
SubLabel varchar(14) NOT NULL
,Sort int NOT NULL
)
INSERT INTO @src
VALUES (1, 'LabelNameOne', 41, 10, 4.1) ;
INSERT INTO @src
VALUES (1, 'LabelNameTwo', 0, 0, 0) ;
INSERT INTO @src
VALUES (1, 'LabelNameThree', 21, 10, 2.1) ;
INSERT INTO @src
VALUES (1, 'LabelNameFour', 15, 10, 1.5) ;
INSERT INTO @src
VALUES (2, 'LabelNameOne', 19, 19, 1) ;
INSERT INTO @src
VALUES (2, 'LabelNameTwo', 0, 0, 0) ;
INSERT INTO @src
VALUES (2, 'LabelNameThree', 15, 16, 0.9375) ;
INSERT INTO @src
VALUES (2, 'LabelNameFive', 19, 19, 1) ;
INSERT INTO @src
VALUES (2, 'LabelNameSix', 17, 17, 1) ;
INSERT INTO @src
VALUES (3, 'LabelNameOne', 12, 12, 1) ;
INSERT INTO @src
VALUES (3, 'LabelNameTwo', 0, 0, 0) ;
INSERT INTO @src
VALUES (3, 'LabelNameThree', 11, 12, 0.9167) ;
INSERT INTO @src
VALUES (3, 'LabelNameFour', 12, 12, 1) ;
INSERT INTO @src
VALUES (3, 'LabelNameSix', 0, 1, 0) ;
INSERT INTO @label_order
VALUES ('LabelNameOne', 1) ;
INSERT INTO @label_order
VALUES ('LabelNameTwo', 2) ;
INSERT INTO @label_order
VALUES ('LabelNameThree', 3) ;
INSERT INTO @label_order
VALUES ('LabelNameFour', 4) ;
INSERT INTO @label_order
VALUES ('LabelNameFive', 5) ;
INSERT INTO @label_order
VALUES ('LabelNameSix', 6) ;
INSERT INTO @sub_label_order
VALUES ('Numerator', 1) ;
INSERT INTO @sub_label_order
VALUES ('Denominator', 2) ;
INSERT INTO @sub_label_order
VALUES ('Ratio', 3) ;
WITH Labels
AS (
SELECT DISTINCT
src.Label + sublabel.SubLabel AS Label
,ISNULL(label_order.Sort, 0) AS Sort
,ISNULL(sublabel.Sort, 0) AS SubSort
FROM @src AS src
CROSS JOIN @sub_label_order AS sublabel
LEFT JOIN @label_order AS label_order
ON src.label = label_order.label
)
SELECT @pivot_cols = COALESCE(@pivot_cols + ',', '') + QUOTENAME(Label, '[')
FROM Labels
ORDER BY Sort
,SubSort
,Label ;
DECLARE @template AS varchar(max) ;
SET @template = '
DECLARE @src AS TABLE
(
ID int NOT NULL
,Label varchar(14) NOT NULL
,Numerator int NOT NULL
,Denominator int NOT NULL
,Ratio decimal(5, 4) NOT NULL
) ;
INSERT INTO @src
VALUES (1, ''LabelNameOne'', 41, 10, 4.1) ;
INSERT INTO @src
VALUES (1, ''LabelNameTwo'', 0, 0, 0) ;
INSERT INTO @src
VALUES (1, ''LabelNameThree'', 21, 10, 2.1) ;
INSERT INTO @src
VALUES (1, ''LabelNameFour'', 15, 10, 1.5) ;
INSERT INTO @src
VALUES (2, ''LabelNameOne'', 19, 19, 1) ;
INSERT INTO @src
VALUES (2, ''LabelNameTwo'', 0, 0, 0) ;
INSERT INTO @src
VALUES (2, ''LabelNameThree'', 15, 16, 0.9375) ;
INSERT INTO @src
VALUES (2, ''LabelNameFive'', 19, 19, 1) ;
INSERT INTO @src
VALUES (2, ''LabelNameSix'', 17, 17, 1) ;
INSERT INTO @src
VALUES (3, ''LabelNameOne'', 12, 12, 1) ;
INSERT INTO @src
VALUES (3, ''LabelNameTwo'', 0, 0, 0) ;
INSERT INTO @src
VALUES (3, ''LabelNameThree'', 11, 12, 0.9167) ;
INSERT INTO @src
VALUES (3, ''LabelNameFour'', 12, 12, 1) ;
INSERT INTO @src
VALUES (3, ''LabelNameSix'', 0, 1, 0) ;
WITH src_conformed
AS (
SELECT ID
,Label
,CAST (Numerator AS decimal(10, 4)) AS Numerator
,CAST (Denominator AS decimal(10, 4)) AS Denominator
,CAST (Ratio AS decimal(10, 4)) AS Ratio
FROM @src
),
UNPIVOTED
AS (
SELECT *
FROM src_conformed UNPIVOT ( Val FOR Col IN (Numerator, Denominator, Ratio) ) AS unpvt
)
,COMBINED AS (SELECT ID, Label + Col AS NewLabel, Val
FROM UNPIVOTED)
SELECT *
FROM COMBINED PIVOT ( SUM(Val) FOR NewLabel IN ({@pivot_cols}) ) AS pvt
ORDER BY ID ;' ;
SET @template = REPLACE(@template, '{@pivot_cols}', @pivot_cols) ;
EXEC (@template) ;
