Splitting a string then pivoting result - sql

Question

If have a string passed from a .Net application that looks like the below
2023|F66451,1684|648521,1684|600271,2137|019592
I have started to parse out the string using the method below but I need to Pivot the data returned from the Split ( surrounded by *'s) function in order to insert into the #tmpExceptions table
DECLARE #ExceptionsList as nvarchar(MAX)
SET #ExceptionsList = '2023|F66451,1684|648521,1684|600271,2137|019592'
SET NOCOUNT ON;
DECLARE #CurrentLineItem as nvarchar(255)
CREATE TABLE #ParsePassOne
(
LineItem nvarchar(255)
)
CREATE TABLE #tmpExceptions
(
AccountNumber int,
ClaimNumber nvarchar(50)
)
INSERT INTO #ParsePassOne
SELECT value FROM Split( ',' ,#ExceptionsList)
WHILE EXISTS(SELECT LineItem FROM #ParsePassOne)
BEGIN
SELECT TOP 1 #CurrentLineItem = LineItem FROM #ParsePassOne
*******
SELECT value FROM Split( '|' ,#CurrentLineItem)
*******
DELETE FROM #ParsePassOne WHERE LineItem = #CurrentLineItem
END
SELECT * FROM #tmpExceptions
DROP TABLE #ParsePassOne
DROP TABLE #tmpExceptions
So far the data returned looks as below. I just need to pivot the data to columns so I can insert it. How do I go about this?
Split Function
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
--Creates an 'InLine' Table Valued Function (TVF)
ALTER FUNCTION [dbo].[Split]
( #Delimiter varchar(5),
#List varchar(8000)
)
RETURNS #TableOfValues table
( RowID smallint IDENTITY(1,1),
[Value] varchar(50)
)
AS
BEGIN
DECLARE #LenString int
WHILE len( #List ) > 0
BEGIN
SELECT #LenString =
(CASE charindex( #Delimiter, #List )
WHEN 0 THEN len( #List )
ELSE ( charindex( #Delimiter, #List ) -1 )
END
)
INSERT INTO #TableOfValues
SELECT substring( #List, 1, #LenString )
SELECT #List =
(CASE ( len( #List ) - #LenString )
WHEN 0 THEN ''
ELSE right( #List, len( #List ) - #LenString - 1 )
END
)
END
RETURN
END

Answer 1

If you are using SQL Server 2016 you can use String_Split() function and use cross apply/pivot to get into single row
create table #t (v varchar(50), i int)
insert into #t (v, i) values ('2023|F66451',1)
,('1684|648521',2), ('1684|600271', 3), ('2137|019592', 4)
--Inorder to get into same row -pivoting the data
select * from (
select * from #t t cross apply (select RowN=Row_Number() over (Order by (SELECT NULL)), value from string_split(t.v, '|') ) d) src
pivot (max(value) for src.RowN in([1],[2])) p

Answer 2

You can replace your WHILE EXISTS(SELECT LineItem FROM #ParsePassOne) loop with
select *
from
(
select * from #parsepassone
cross apply dbo.Split( '|' ,lineitem)
) src
pivot
(max(value) for rowid in ([1],[2]))p
Or replace the whole thing with
insert #tmpExceptions (AccountNumber, ClaimNumber)
select [1],[2]
from
(
select e.rowid e, p.* from dbo.Split( ',' ,#ExceptionsList) e
cross apply dbo.Split( '|' ,e.value) p ) s
pivot
(max(value) for rowid in ([1],[2]))p

Answer 3

I had a similar problem, where I needed to split and pivot the values in a column, and I needed to have it all in a view.
I came up with the following code (for SQL 2016 and up)
/* Table */
DECLARE #data TABLE (id INT IDENTITY(1,1), [Name] VARCHAR(128) NOT NULL, [Selection] VARCHAR(512) NULL)
INSERT INTO #data ([Name],Selection)
VALUES('Bob','PC; Mouse; Keyboard; Network; Smartphone'),
('Mo','Violin; Hammer'),
('Jon','Magic; Blood; Teleporter'),
('Mhary','Vampire')
/* Pivot */
;WITH Data_RowNumber AS (
SELECT
id,
[name],
split.value,
ROW_NUMBER() OVER (PARTITION BY id ORDER BY id) AS RowNumber
FROM #data
CROSS APPLY STRING_SPLIT([Selection],';') AS split
)
SELECT
id,
[name],
[1],[2],[3],[4],[5],[6]
FROM Data_RowNumber
PIVOT (
MAX([value])
FOR [RowNumber] IN ([1],[2],[3],[4],[5],[6])
) AS p