Converting column data to row - tsql

Question

There has to be a simpler way to do this, right? I have 100 rows of numeric values, and I want the first row to be in a new table, row 1 column A, second row to be in the new table, row 1 column B, ... 100th row to be in the new table, row 100 column J. Just for fun, I'm also writing a single letter based on that numeric value into the new table, instead of a numeric. So here's my code:
UPDATE #data
SET Block = CASE OStatus WHEN 1 THEN 'C' WHEN 2 THEN 'B'
WHEN 3 THEN 'D' WHEN 4 THEN 'S' WHEN 5 THEN 'P' ELSE '' END
DECLARE #Ax NVARCHAR(1)
,#Bx NVARCHAR(1)
,#Cx NVARCHAR(1)
,#Dx NVARCHAR(1)
,#Ex NVARCHAR(1)
,#Fx NVARCHAR(1)
,#Gx NVARCHAR(1)
,#Hx NVARCHAR(1)
,#Ix NVARCHAR(1)
,#Jx NVARCHAR(1)
SET #Count1 = 0
WHILE #Count1 < 10 BEGIN
SET #Count1 += 1
SELECT #Ax = Block FROM #data WHERE ID = #Count1 + 0
SELECT #Bx = Block FROM #data WHERE ID = #Count1 + 10
SELECT #Cx = Block FROM #data WHERE ID = #Count1 + 20
SELECT #Dx = Block FROM #data WHERE ID = #Count1 + 30
SELECT #Ex = Block FROM #data WHERE ID = #Count1 + 40
SELECT #Fx = Block FROM #data WHERE ID = #Count1 + 50
SELECT #Gx = Block FROM #data WHERE ID = #Count1 + 60
SELECT #Hx = Block FROM #data WHERE ID = #Count1 + 70
SELECT #Ix = Block FROM #data WHERE ID = #Count1 + 80
SELECT #Jx = Block FROM #data WHERE ID = #Count1 + 90
INSERT INTO _dbh_grid
SELECT
#Ax,#Bx,#Cx,#Dx,#Ex,#Fx,#Gx,#Hx,#Ix,#Jx
END

Answer 1

I use the PIVOT functionality (and a little math) to make it work; you could probably make it dynamic.
/*build a sample data set*/
SELECT TOP 100
column_id AS OSStatus
, ID = IDENTITY( INT, 1,1)
INTO #data
FROM sys.columns
WHERE column_id < 6;
SELECT *
FROM #data d;
/*break the data set into groups of 10, and identify the ordinal position within each group
column_postition returns group
row_position returns ordinal within group
*/
WITH c AS ( SELECT OSStatus
, column_position = ( ROW_NUMBER() OVER ( ORDER BY ID )
- 1 ) / 10
, row_position = ( ROW_NUMBER() OVER ( ORDER BY ID ) - 1 )
% 10
FROM #data
)
SELECT [A], [B], [C], [D], [E], [F], [G], [H], [I], [J]
FROM ( SELECT c.OSStatus
, column_name = CHAR(65 + c.column_position) --convert to a-J
, c.row_position
FROM c
) p
PIVOT
(MIN(OsStatus)
FOR column_name
IN ([A], [B], [C], [D], [E], [F], [G], [H], [I], [J])
) pvt
DROP TABLE #data;