Suppose we have a string as
DECLARE @Data VARCHAR(MAX)
SET @Data = 'hello! DNF. This is a nice platform where we can learn many things'
SELECT LEN(@Data)
/*
66
*/
We need to generate a number table based on the Length of the string (i.e. @Data here)
;WITH numberCTE AS
(
SELECT 1 AS Rn
UNION ALL
SELECT Rn+1 FROM numberCTE WHERE Rn<LEN(@Data)
)
SELECT [Serial Number] = Rn
FROM numberCTE
/*
Serial Number
-----------------
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
/*