count in dynamic name SQL Server - sql-server

Question

I create a stored procedure in SQL Server:
ALTER PROCEDURE [dbo].[testChildren]
#Parent INT
AS
BEGIN
SET NOCOUNT ON;
WITH EntityChildren AS
(
SELECT
nname, nodeid, level, ncode, nparent
FROM
GrpItm
WHERE
nodeid = #Parent
UNION ALL
SELECT
e.nname, e.nodeid, e.level, e.ncode, e.nparent
FROM
GrpItm e
INNER JOIN
EntityChildren e2 ON e.nparent = e2.nodeid
)
SELECT COUNT(Level) AS [level]
FROM EntityChildren
END
How can I make each count level in row and named the row by level value like this:
| level 1 | level 2 | level 3 |
+---------+---------+---------+
| 2 | 3 | 1 |

Answer 1

If you want something closer to...
level | count
-------+-------
1 | 2
2 | 3
3 | 1
Then it would just be something like...
SELECT
level,
COUNT(*) AS row_count
FROM
EntityChildren
GROUP BY
level
But that's simpler than what you're already accomplished, so I may be missing the point of your question and comment?

Answer 2

This is only regarding to #MatBailie answer. If you have a table like his, you can pivot your data and get it as you request.
Table Created with Levels and counts
You need a script to populate this table with the values you need
create table dbo.myt (levels int, counts int)
insert into dbo.myt
values
(1 , 2),
(2 , 3),
(3 , 1)
SQL Code
DECLARE #ALIASNAME nvarchar(50) = 'Levels'
DECLARE #Str NVARCHAR(MAX);
DECLARE #Str2 NVARCHAR(MAX);
SELECT #Str = STUFF(
(
SELECT DISTINCT
','+'[Levels'+cast(levels as nvarchar(50))+']'
FROM dbo.myt FOR XML PATH('')
), 1, 1, '');
PRINT #Str
SET #str2 = N'select * from (
select cast('''+#ALIASNAME+'''+ cast(Levels as nvarchar(50)) as nvarchar(50)) as Levels,counts,ROW_NUMBER() over(PARTITION by levels order by counts) as rn
from dbo.myt
)x
PIVOT
(Max(counts) FOR Levels in ('+#Str+')
) as p';
PRINT #Str2;
EXEC (#Str2);
Your Stored proc
ALTER PROCEDURE [dbo].[testChildren]
#Parent INT
AS
BEGIN
SET NOCOUNT ON;
WITH EntityChildren AS
(
SELECT
nname, nodeid, level, ncode, nparent
FROM
GrpItm
WHERE
nodeid = #Parent
UNION ALL
SELECT
e.nname, e.nodeid, e.level, e.ncode, e.nparent
FROM
GrpItm e
INNER JOIN
EntityChildren e2 ON e.nparent = e2.nodeid
)
INSERT INTO dbo.myt (Levels,Counts)
SELECT
level, COUNT(*) AS row_count
FROM
EntityChildren
GROUP BY level
/* INSERT PIVOT SCRIPT AND INSERT INTO A NEW TABLE */
END
Result