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--2. еĽâ¾ö·½·¨(sql server 2005)
create table tb(id int,value varchar(30))
insert into tb values(1,'aa,bb')
insert into tb values(2,'aaa,bbb,ccc')
go

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SELECT A.id, B.value
from(
  SELECT id, [value] = CONVERT(xml,'<root><v>' + REPLACE([value], ',', '</v><v>') + '</v></root>') from tb
)A
OUTER APPLY(
  SELECT value = N.v.value('.', 'varchar(100)') from A.[value].nodes('/root/v') N(v)
)B


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SQL code:
SELECT A.id, B.value
from(
SELECT id, [value] = CONVERT(xml,'<root><v>' + REPLACE([value], ',', '</v><v>') + '</v></root>') from tb
)A
OUTER APPLY(
SELECT [value] = N.v.value('.', 'varchar(100)') from A.[value].nodes('/root/v') N(v)
)B


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