SQL 2005ÒçÓÃÖ®£º·Ö²ðÁÐÖµ

ÎÊÌâÃèÊö£º
Óбítb, ÈçÏÂ:
id          values
----------- -----------
1           aa,bb
2           aaa,bbb,ccc
Óû°´,·Ö²ðvaluesÁÐ, ·Ö²ðºó½á¹ûÈçÏÂ:
id          value
----------- --------
1           aa
1           bb
2           aaa
2           bbb
2           ccc
1. ¾ÉµÄ½â¾ö·½·¨
SELECT TOP 8000
    id = IDENTITY(int, 1, 1)
INTO #
from syscolumns a, syscolumns b
SELECT
    A.id,
    SUBSTRING(A.[values], B.id, CHARINDEX(',', A.[values] + ',', B.id) - B.id)
from tb A, # B
WHERE SUBSTRING(',' + A.[values], B.id, 1) = ','
DROP TABLE #
-- 2. еĽâ¾ö·½·¨
-- ʾÀýÊý¾Ý
DECLARE @t TABLE(id int, [values] varchar(100))
INSERT @t SELECT 1, 'aa,bb'
UNION ALL SELECT 2, 'aaa,bbb,ccc'
-- ²éѯ´¦Àí
SELECT
    A.id, B.value
from(
    SELECT id, [values] = CONVERT(xml,
            '<root><v>' + REPLACE([values], ',', '</v><v>') + '</v></root>')
    from @t
)A
OUTER APPLY(
    SELECT value = N.v.value('.', 'varchar(100)')
    from A.[values].nodes('/root/v') N(v)
)B
/*--½á¹û
id          value
----------- --------
1           aa
1           bb
2           aaa
2       &nbs