如何拆分SQL Server表行中的数据

SELECT 
    value AS ContactPart,
    ROW_NUMBER() OVER (PARTITION BY EmployeeID ORDER BY (SELECT NULL)) AS PartNumber
FROM 
    EmployeeData
CROSS APPLY 
    STRING_SPLIT(ContactInfo, ',')

CREATE FUNCTION dbo.SplitString 
(
    @string NVARCHAR(MAX), 
    @delimiter CHAR(1)
)
RETURNS @output TABLE(splitdata NVARCHAR(MAX))
BEGIN
    DECLARE @start INT, @end INT
    SELECT @start = 1, @end = CHARINDEX(@delimiter, @string)
    WHILE @start < LEN(@string) + 1 BEGIN
        IF @end = 0 
            SET @end = LEN(@string) + 1
    
        INSERT INTO @output (splitdata) 
        VALUES(SUBSTRING(@string, @start, @end - @start))
        SET @start = @end + 1
        SET @end = CHARINDEX(@delimiter, @string, @start)
        
    END
    RETURN
END

SELECT 
    EmployeeID,
    (SELECT splitdata FROM dbo.SplitString(ContactInfo, ',') WHERE PartNumber = 1) AS Name,
    (SELECT splitdata FROM dbo.SplitString(ContactInfo, ',') WHERE PartNumber = 2) AS Phone,
    (SELECT splitdata FROM dbo.SplitString(ContactInfo, ',') WHERE PartNumber = 3) AS Email
FROM 
    EmployeeData