A better way to parse integer values from a T-SQL delimited string

Question

I have a SQLServer2008 R2 Stored Procedure that contains an algorithm for parsing out integers from a delimited string.

Here\'s an example of the SQL code that I mad

Answer 1

Here is the code, you can also create a 'split' function and use that

DECLARE @NumericList nvarchar(max) = N'1, 33,44 ,55, foo ,666,77 77,8,bar,9,10'

;WITH cte as (
SELECT CAST(1 as bigint) p1,  CHARINDEX(',', @NumericList+',') p2, 
CAST(null as Nvarchar(max)) NumberInScope 
UNION ALL
SELECT p2 + 1, CHARINDEX(',',@NumericList+',', p2 + 1), 
SUBSTRING(@NumericList, p1, p2-p1) 
FROM cte WHERE p2>0
)
SELECT NumberInScope from cte WHERE isnumeric(NumberInScope) > 0
OPTION (MAXRECURSION 0)

Answer 2

The definitive article is "Arrays and Lists in SQL Server 2005 and Beyond"

Here several methods are shown for splitting CSVs: CLR, Numbers table, WHILE loops

Answer 3

From MSSql Server 2016, there is a new keyword introduced STRING_SPLIT to do the desired operation.

SELECT STRING_SPLIT ( string , separator )

Refer https://msdn.microsoft.com/en-us/library/mt684588.aspx