如何使用SQL Server 将逗号分隔值扩展为单独的行？

CREATE FUNCTION dbo.SplitStrings_XML
(
   @List       NVARCHAR(MAX),
   @Delimiter  NVARCHAR(255)
)
RETURNS TABLE
WITH SCHEMABINDING
AS
   RETURN
   (
      SELECT Item = y.i.value('(./text())[1]', 'nvarchar(4000)')
      FROM
      (
        SELECT x = CONVERT(XML, '\textit{'
          + REPLACE(@List, @Delimiter, '}\textit{')
          + '}').query('.')
      ) AS a CROSS APPLY x.nodes('i') AS y(i)
   );

DECLARE @List NVARCHAR(MAX) = '1,2,3,4,5';
DECLARE @Delimiter NVARCHAR(255) = ',';

SELECT Item
FROM dbo.SplitStrings_XML(@List, @Delimiter)

Item
----
1
2
3
4
5