Split space separated values - sql

Question

I have many records like this
ID Tag Arr
1 A 87 34 92
2 A 34 35 38
3 A 39 88 92
4 B 24 49 39
5 B 38 88 23
6 C 39 37 99
I want the end result to look like this in a fast way
Tag Arr No
A 87 1
A 34 2
A 92 2
A 35 1
A 38 1
A 39 1
A 88 1
B 24 1
B 49 1
B 39 1
B 38 1
B 88 1
B 23 1
C 39 1
C 37 1
C 99 1
This is the query i built so far
SELECT DISTINCT T2.tag,
SUBSTRING(
(
SELECT ','+T1.Arr AS [text()]
FROM Tags T1
WHERE T1.tag = T2.tag
and filename = 1
and tag not in ('U')
ORDER BY T1.tag
FOR XML PATH ('')
), 2, 1000) [Ts]
FROM Tags T2
WHERE filename = 1
and tag not in ('U')

Answer 1

You can try this using STRING_SPLIT (Transact-SQL)
which works for SQL Server 2016 and later.
create table tblSampleValue(Id int, Tag Varchar(10), Arr Varchar(50))
insert into tblSampleValue Values
(1, 'A', '87 34 92'),
(2, 'A', '34 35 38'),
(3, 'A', '39 88 92'),
(4, 'B', '24 49 39'),
(5, 'B', '38 88 23'),
(6, 'C', '39 37 99')
Select * from tblSampleValue
select id
, Tag
, [value] as Arr
from tblSampleValue
cross apply string_split(Arr,' ')
Live db<>fiddle demo.

Answer 2

First, you need to use Split function to split Arr column with space.
CREATE FUNCTION udf_Split
( #Words nvarchar(MAX)
, #splitStr varchar(50)
)
RETURNS #Result_Table TABLE
(
[word] nvarchar(max) NULL
)
BEGIN
Declare #TempStr nvarchar(MAX)
WHILE (CHARINDEX(#splitStr,#Words)>0)
BEGIN
Set #TempStr=SUBSTRING(#Words,1,CHARINDEX(#splitStr,#Words)-1)
Insert into #Result_Table (word) Values (#TempStr)
Set #Words = REPLACE(#Words,#TempStr+#splitStr,'')
END/*End While*/
IF(LEN(RTRIM(LTRIM(#Words)))>0 And CHARINDEX(#splitStr,RTRIM(LTRIM(#Words)))=0)
Begin
Set #TempStr=#Words
Insert into #Result_Table (word) Values (#TempStr)
End /*End IF*/
RETURN
END
then use CROSS APPLY with Arr column
SELECT Tag,
word,
count(*) [no]
FROM Tags CROSS APPLY udf_Split(Arr,' ') v
GROUP BY Tag,
word
ORDER BY Tag
sqlfiddle
Note:
if your SQL server version higher than 2016 there is an official function you can use STRING_SPLIT