i have string as 'abc,def,ghi,jkl' [duplicate] - sql

Question

This question already has answers here:
SQL Server split CSV into multiple rows
(4 answers)
Closed 6 years ago.
i want to string in table column in new row as
table
abc
def
ghi
jkl

Answer 1

If you are using SQL SERVER 2016 then use STRING_SPLIT function
SELECT *
FROM String_split('abc,def,ghi,jkl', ',')
If you are using anything less than SQL SREVER 2016 then here is the best split string function. Referred from here
CREATE FUNCTION [dbo].[Delimitedsplit8k] (#pString VARCHAR(8000),
#pDelimiter CHAR(1))
RETURNS TABLE
WITH SCHEMABINDING
AS
RETURN
--===== "Inline" CTE Driven "Tally Table" produces values from 0 up to 10,000...
-- enough to cover NVARCHAR(4000)
WITH E1(N) AS (
SELECT 1 UNION ALL SELECT 1 UNION ALL SELECT 1 UNION ALL
SELECT 1 UNION ALL SELECT 1 UNION ALL SELECT 1 UNION ALL
SELECT 1 UNION ALL SELECT 1 UNION ALL SELECT 1 UNION ALL SELECT 1
), --10E+1 or 10 rows
E2(N) AS (SELECT 1 FROM E1 a, E1 b), --10E+2 or 100 rows
E4(N) AS (SELECT 1 FROM E2 a, E2 b), --10E+4 or 10,000 rows max
cteTally(N) AS (--==== This provides the "base" CTE and limits the number of rows right up front
-- for both a performance gain and prevention of accidental "overruns"
SELECT TOP (ISNULL(DATALENGTH(#pString),0)) ROW_NUMBER() OVER (ORDER BY (SELECT NULL)) FROM E4
),
cteStart(N1) AS (--==== This returns N+1 (starting position of each "element" just once for each delimiter)
SELECT 1 UNION ALL
SELECT t.N+1 FROM cteTally t WHERE SUBSTRING(#pString,t.N,1) = #pDelimiter
),
cteLen(N1,L1) AS(--==== Return start and length (for use in substring)
SELECT s.N1,
ISNULL(NULLIF(CHARINDEX(#pDelimiter,#pString,s.N1),0)-s.N1,8000)
FROM cteStart s
)
--===== Do the actual split. The ISNULL/NULLIF combo handles the length for the final element when no delimiter is found.
SELECT ItemNumber = ROW_NUMBER() OVER(ORDER BY l.N1),
Item = SUBSTRING(#pString, l.N1, l.L1)
FROM cteLen l
;
GO
To call the function
SELECT *
FROM dbo.DelimitedSplit8K('abc,def,ghi,jkl', ',')

Answer 2

You can use a Recursive CTE to split the string. It will allow you to track the position of the String within the string (if you want) and also provide a link back to your ID/Key value in your master table. (This allows you to avoid using a function if it's not an option)
CREATE TABLE #S(ID INT
,Qry VARCHAR(10)
)
INSERT INTO #S VALUES
(1,'TRA,B')
,(2,'X,YA,ZT')
DECLARE #s AS VARCHAR(1) = ','
;WITH cte_R
AS
(
SELECT
ID
,1 Ord
,LEFT(Qry,CHARINDEX(#s,Qry,0)) Val
,RIGHT(Qry,LEN(Qry)-CHARINDEX(#s,Qry,1)) Rem
FROM
#S
WHERE
Len(Qry) > 0
UNION ALL
SELECT
ID
,Ord+1
,LEFT(Rem,CHARINDEX(#s,Rem+#s,0))
,RIGHT(Rem,LEN(Rem)-CHARINDEX(#s,Rem,0))
FROM
cte_R
WHERE
CHARINDEX(#s,Val,0) > 0
)
SELECT
ID
,Ord
,REPLACE(Val,#s,'') Val
FROM
cte_R
ORDER BY
ID
,Ord