How to split string on two characters or delimiters in sql - sql

Question

i'm trying to split this string "1,1_5,2_3,4" first on '_' and then split the sub string on ',' so it will be like "1,1_5,2_3,4" split-ed on '_' first so it will give this sub string "1,1" then this sub string split-ed on ',' and then insert the split-ed sub string "1 1" into temp table like this
INSERT INTO [dbo].[TEST] ([X],[Y])
VALUES (#X,#Y)
i did this with only split on one delimiter ',' like this
first i create a table Split function
ALTER FUNCTION [dbo].[Split]
(
-- Add the parameters for the function here
#RowData nvarchar(2000),
#SplitOn nvarchar(5)
)
RETURNS #RtnValue table
(
Id int identity(1,1),
Data nvarchar(100)
)
AS
BEGIN
-- Declare the return variable here
Declare #Cnt int
Set #cnt = 1
While(charindex(#SplitOn,#RowData) > 0)
Begin
Insert Into #RtnValue (data)
Select
Data = ltrim(RTRIM(SUBSTRING(#RowData,1,CHARINDEX(#SplitOn,#RowData)-1)))
set #RowData = SUBSTRING(#RowData,CHARINDEX(#SplitOn,#RowData)+1,len(#RowData))
set #Cnt = #Cnt + 1
End
insert into #RtnValue(data)
select Data = ltrim(RTRIM(#RowData))
RETURN
END
then i create this stored procedure
ALTER PROCEDURE [dbo].[uspTest]
-- Add the parameters for the stored procedure here
#StringOFXIDs nvarchar(2000)
AS
BEGIN
-- SET NOCOUNT ON added to prevent extra result sets from
-- interfering with SELECT statements.
SET NOCOUNT ON;
DECLARE #SOMETABLE TABLE(ID INT IDENTITY(1,1) UNIQUE, XID INT);
DECLARE #XCOUNT INT;
DECLARE #XCURRENT INT;
DECLARE #XCOUNTER INT = 1;
-- Insert statements for procedure here
INSERT INTO #SOMETABLE([XID])
SELECT [Data] FROM [dbo].[Split](#StringOFXIDs,',');
SELECT #XCOUNT = COUNT(1) FROM #SOMETABLE;
WHILE (#XCOUNTER <= #XCOUNT)
BEGIN
SELECT #XCOUNTER = [XID]
FROM #SOMETABLE
WHERE [ID] = #XCOUNTER
INSERT INTO [dbo].[TEST] ([X])
VALUES (#XCOUNTER)
SELECT #XCOUNTER +=1;
END
END
--EXEC [dbo].[uspTest] '1,2,3,4'
and then execute this stored procedure and every thing work but i can't figure out how to split the string on two characters or delimiters and then inserted to temp table thanks for any help in advance.

Answer 1

You can use XML functionality to split into rows, then split into columns:
DECLARE #string VARCHAR(100) = '1,1_5,2_3,4'
;WITH cte AS (SELECT RTRIM(LTRIM(Split.a.value('.', 'VARCHAR(100)'))) AS Txt
,ROW_NUMBER() OVER(ORDER BY (SELECT 1)) AS RN
FROM (SELECT CAST ('<M>' + REPLACE(#string, '_', '</M><M>') + '</M>' AS XML) AS DATA
) AS A
CROSS APPLY Data.nodes ('/M') AS Split(a)
)
,cte2 AS (SELECT CONVERT(XML,'<String><Section>'+ REPLACE(REPLACE(Txt ,'|',','),',', '</Section><Section>') + '</Section></String>') AS Txt
,RN
FROM cte
)
SELECT Txt.value('/String[1]/Section[1]','varchar(100)') AS Col1
,Txt.value('/String[1]/Section[2]','varchar(100)') AS Col2
FROM cte2
ORDER BY RN
Outputs:
Col1 Col2
---------------
1 1
5 2
3 4