Du kan bruge UNPIVOT operation for at få dine resultater
SELECT col, value
FROM
(SELECT CAST(col1 AS VARCHAR) AS col1, CAST(col2 AS VARCHAR) AS col2,
CAST(col3 AS VARCHAR) AS col3, CAST(col4 AS VARCHAR) AS col4
FROM Table1) p
UNPIVOT
(value FOR col IN
(col1, col2, col3, col4)
) AS unpvt;