sqlserver使用cte实现某列按字符分隔成多行

;WITH roy AS 
    (SELECT 
        [DataRowStartIndex] ,
        [DataRowEndIndex] ,
        [DataColumnStartIndex] ,
        [DataColumnEndIndex] ,
        [Separator],
        [SheetName]=CAST(left([SheetName],CHARINDEX(‘,‘,[SheetName]+‘,‘)-1) AS nvarchar(100)), 
        Split=CAST(STUFF([SheetName]+‘,‘,1,CHARINDEX(‘,‘,[SheetName]+‘,‘),‘‘) AS NVARCHAR(100))
    FROM AccessTypeForExcel
    UNION ALL 
    SELECT 
        [DataRowStartIndex] ,
        [DataRowEndIndex] ,
        [DataColumnStartIndex] ,
        [DataColumnEndIndex] ,
        [Separator],
        [SheetName]=CAST(left(Split,CHARINDEX(‘,‘,Split)-1) AS NVARCHAR(100)), 
        Split= CAST(STUFF(Split,1,CHARINDEX(‘,‘,Split),‘‘) AS NVARCHAR(100))
    FROM Roy
    WHERE split>‘‘)
SELECT 
        [DataRowStartIndex] ,
        [DataRowEndIndex] ,
        [DataColumnStartIndex] ,
        [DataColumnEndIndex] ,
        [Separator],
        [SheetName]
FROM roy
OPTION (MAXRECURSION 0)