Anche un altro approccio consiste nell'usare XML Metodo con CROSS APPLY per dividere i tuoi dati separati da virgola :
SELECT Split.a.value('.', 'NVARCHAR(MAX)') DATA
FROM
(
SELECT CAST('<X>'+REPLACE(@ID, ',', '</X><X>')+'</X>' AS XML) AS String
) AS A
CROSS APPLY String.nodes('/X') AS Split(a);
Risultato:
DATA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Esempio :
DECLARE @ID NVARCHAR(300)= '1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20';
DECLARE @Marks NVARCHAR(300)= '0,1,2,5,8,9,4,6,7,3,5,2,7,1,9,4,0,2,5,0';
DECLARE @StudentsMark TABLE
(id NVARCHAR(300),
marks NVARCHAR(300)
);
--insert into @StudentsMark
;WITH CTE
AS (
SELECT Split.a.value('.', 'NVARCHAR(MAX)') id,
ROW_NUMBER() OVER(ORDER BY
(
SELECT NULL
)) RN
FROM
(
SELECT CAST('<X>'+REPLACE(@ID, ',', '</X><X>')+'</X>' AS XML) AS String
) AS A
CROSS APPLY String.nodes('/X') AS Split(a)),
CTE1
AS (
SELECT Split.a.value('.', 'NVARCHAR(MAX)') marks,
ROW_NUMBER() OVER(ORDER BY
(
SELECT NULL
)) RN
FROM
(
SELECT CAST('<X>'+REPLACE(@Marks, ',', '</X><X>')+'</X>' AS XML) AS String
) AS A
CROSS APPLY String.nodes('/X') AS Split(a))
INSERT INTO @StudentsMark
SELECT C.id,
C1.marks
FROM CTE C
LEFT JOIN CTE1 C1 ON C1.RN = C.RN;
SELECT *
FROM @StudentsMark;
