TSQL: multiple split string in one query - sql-server

Question

I have a string_split function which looks like below
CREATE FUNCTION [dbo].[String_Split](#String varchar(8000), #Delimiter char(1))
returns #temptable TABLE ([value] varchar(8000))
as
begin
declare #idx int
declare #slice varchar(8000)
select #idx = 1
if len(#String)<1 or #String is null return
while #idx!= 0
begin
set #idx = charindex(#Delimiter,#String)
if #idx!=0
set #slice = left(#String,#idx - 1)
else
set #slice = #String
if(len(#slice)>0)
insert into #temptable([value]) values(#slice)
set #String = right(#String,len(#String) - #idx)
if len(#String) = 0 break
end
return
end
I am now successfully able to split the string using the below code
declare #NameList nvarchar(100) = 'Hi,Hi1,Hi2';
SELECT * FROM string_split(#NameList,',')
but now I want to split multiple string using the same function like below
declare #NameList nvarchar(100) = 'Hi,Hi1,Hi2';
declare #DESCLIST nvarchar(100) = 'Hii,Hii1,Hii2';
I want to split these strings in different columns,
my expected output is
col 1 col 2
------------------
Hi |Hii
Hi1 |Hii1
Hi2 |Hii2
how can I achieve this?

Answer 1

You can join them on row-number.
SELECT
s1.value,
s2.value
FROM (
SELECT *,
rn = ROW_NUMBER() OVER (ORDER BY (SELECT NULL))
FROM STRING_SPLIT(#NameList, ',') s
) s1
JOIN (
SELECT *,
rn = ROW_NUMBER() OVER (ORDER BY (SELECT NULL))
FROM STRING_SPLIT(#DESCLIST, ',') s
) s2 ON s2.rn = s1.rn;
db<>fiddle
I strongly suggest you store multiple items in separate rows, rather than a comma-separated list. Consider using a table variable, temporary table or Table Valued Parameter.