Multiple columns into a pivot.

Putting multiple columns into a pivot.
Took some time to figure out, but I got it to work.

1. Make data types of all columns the same.
Description: The idea is to make all columns of the same data type (Base query)

2. Unpivot the columns so they have a key, column name, and column value.
Description: Put all columns into one column with the "Column name and value" into a "ColName" field AND put the columns value into another field called "ColValue" (unpvt).

3. Finally, Pivot the values out by the "ColName" column
Description: The key and the values that were pivoted is what you want to select on this last step.

Example:
,Base AS (
    SELECT theKey, Field3, Cast(Field1 as varchar) as Field1, Cast(Field2 as varchar) as Field2, cast(Field3 as varchar) as Field32
    FROM theData
)
,unpvt AS (
SELECT theKey, ColName + CONVERT(varchar, Field3) AS ColName, ColValue
FROM Base
UNPIVOT (ColValue FOR ColName IN (Field1, Field2, Field32)) AS pvt
)
,repvt as (
SELECT theKey, Field1P, Field2P, Field32P, Field1R, Field2R, Field32R, Field1S, Field2S, Field32S, Field1C, Field2C, Field32C
FROM unpvt
PIVOT (MIN(ColValue) FOR ColName IN (Field1P, Field2P, Field32P, Field1R, Field2R, Field32R, Field1S, ModIdS, Field32S, Field1C, Field2C, Field32C)) AS pvt
)