declare @val varchar(8000)
set @val = 'AA1,10.1;BB1,6.5'

/************************拆分成多行多列start***************************/
--v1.0
SELECT
    rowSet.[1] AS 'MaterialId'
    ,rowSet.[2] AS 'Qty'
    ,rowSet.[3] AS 'StockId'
    ,rowSet.[4] AS 'dateTime'
FROM (
    SELECT
        CAST('<v>'+ REPLACE(rowSet.resVal,',','</v><v>') + '</v>' AS XML) AS xmlVal 
        ,ROW_NUMBER() over (order by resVal) RN
    FROM (
        SELECT CAST('<v>'+ REPLACE('AA1,10.1;BB1,16.5',';','</v><v>') + '</v>' AS XML) AS xmlVal 
    ) AS valSet
    OUTER APPLY (
        SELECT T.C.value('.','varchar(100)') resVal 
        FROM valSet.xmlVal.nodes('/v') AS T(C)
    ) rowSet 
) AS valSet
OUTER APPLY (
    SELECT TT2.*
    FROM (
        SELECT T.C.value('.','varchar(100)') resVal 
            ,ROW_NUMBER() over (order by valSet.RN) RowNo
        FROM valSet.xmlVal.nodes('/v') AS T(C)
    ) TT 
    PIVOT ( MAX(TT.resVal) FOR TT.RowNo IN ([1],[2],[3],[4])) TT2
) rowSet
--v2.0
SELECT
    rowSet2.[1] AS 'MaterialId'
    ,rowSet2.[2] AS 'Qty'
    ,rowSet2.[3] AS 'StockId'
    ,rowSet2.[4] AS 'FDate'
    ,rowSet2.[5] AS 'FSBILLID'
    ,rowSet2.[6] AS 'FSID'
    ,rowSet2.[7] AS 'FSTABLENAME'
    ,0 AS 'HasVal'
FROM (
    SELECT 1 ID,CAST('<v>'+ REPLACE('AA1,10.1;BB1,16.5',';','</v><v>') + '</v>' AS XML) AS xmlVal
) AS valSet
OUTER APPLY (
    SELECT ROW_NUMBER() OVER (ORDER BY valSet.ID) RN
        ,CAST('<v>'+ REPLACE(T.C.value('.','varchar(100)'),',','</v><v>') + '</v>' AS XML) xmlVal 
    FROM valSet.xmlVal.nodes('/v') AS T(C)
) rowSet 
OUTER APPLY (
    SELECT * FROM (
        SELECT T.C.value('.','varchar(100)') AS xmlVal
            ,ROW_NUMBER() OVER (ORDER BY rowSet.RN) RowNo
        FROM rowSet.xmlVal.nodes('/v') AS T(C)
    ) TT
    PIVOT ( MAX(TT.xmlVal) FOR TT.RowNo IN ([1],[2],[3],[4],[5],[6],[7])) TT2
) rowSet2
/************************拆分成多行多列end***************************/

/************************拆分成多行start***************************/
SELECT
    rowSet.resVal
    ,rowSet.rowNo
FROM (
    SELECT CAST('<v>'+ REPLACE('AA1,10.1;BB1,6.5',';','</v><v>') + '</v>' AS XML) AS xmlVal 
) AS valSet
OUTER APPLY (
    SELECT T.C.value('.','varchar(100)') resVal
        ,row_number() over (order by C) rowNo
    FROM valSet.xmlVal.nodes('/v') AS T(C)
) rowSet
/************************拆分成多行end***************************/