Kanske något sånt här:
Testdata
DECLARE @T TABLE(Col1 INT, Col2 INT, Col3 INT)
INSERT INTO @T
VALUES (1,1,1)
Fråga
SELECT
*
FROM
(
SELECT
t.Col1,
t.Col2,
t.Col3
FROM
@T AS t
) AS SourceTable
UNPIVOT
(
Value FOR Col IN
(Col1,Col2,Col3)
) AS unpvt
Utdata
1 Col1
1 Col2
1 Col3