分拆列值原著:邹建
改编:爱新觉罗.毓华 2007-12-16 广东深圳有表tb, 如下:
id value
----------- -----------
1 aa,bb
2 aaa,bbb,ccc
欲按id,分拆value列, 分拆后结果如下:
id value
----------- --------
1 aa
1 bb
2 aaa
2 bbb
2 ccc1. 旧的解决方法(sql server 2000)
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. 新的解决方法(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
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)
)BDROP TABLE tb/*
id value
----------- ------------------------------
1 aa
1 bb
2 aaa
2 bbb
2 ccc(5 行受影响)
*/
改编:爱新觉罗.毓华 2007-12-16 广东深圳有表tb, 如下:
id value
----------- -----------
1 aa,bb
2 aaa,bbb,ccc
欲按id,分拆value列, 分拆后结果如下:
id value
----------- --------
1 aa
1 bb
2 aaa
2 bbb
2 ccc1. 旧的解决方法(sql server 2000)
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. 新的解决方法(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
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)
)BDROP TABLE tb/*
id value
----------- ------------------------------
1 aa
1 bb
2 aaa
2 bbb
2 ccc(5 行受影响)
*/
create table tb(jg_dm varchar(20) , bz varchar(10))
insert into tb values('001' , '111')
insert into tb values('001,002' , '125')
insert into tb values('003,004,005', '达到')
go SELECT TOP 8000 id = IDENTITY(int, 1, 1) INTO # FROM syscolumns a, syscolumns b SELECT jg_dm = SUBSTRING(A.jg_dm, B.id, CHARINDEX(',', A.jg_dm + ',', B.id) - B.id) , A.bz
FROM tb A, # B
WHERE SUBSTRING(',' + A.jg_dm, B.id, 1) = ','DROP TABLE #,tb/*
jg_dm bz
-------------------- ----------
001 111
001 125
002 125
003 达到
004 达到
005 达到(所影响的行数为 6 行)
*/
create table tb(jg_dm varchar(20) , bz varchar(10))
insert into tb values('001,' , '111')
insert into tb values('001,002,' , '125')
insert into tb values('003,004,005,', '达到')
go SELECT TOP 8000 id = IDENTITY(int, 1, 1) INTO # FROM syscolumns a, syscolumns b select * from
(
SELECT jg_dm = SUBSTRING(A.jg_dm, B.id, CHARINDEX(',', A.jg_dm + ',', B.id) - B.id) , A.bz
FROM tb A, # B
WHERE SUBSTRING(',' + A.jg_dm, B.id, 1) = ','
) t
where jg_dm <> ''DROP TABLE #,tb/*
jg_dm bz
-------------------- ----------
001 111
001 125
002 125
003 达到
004 达到
005 达到(所影响的行数为 6 行)
*/
insert into tb values('001,' , '111')
insert into tb values('001,002,' , '125')
insert into tb values('003,004,005,', '达到')
go SELECT TOP 8000 id = IDENTITY(int, 1, 1) INTO # FROM syscolumns a, syscolumns b select * from
(
SELECT jg_dm = SUBSTRING(A.jg_dm, B.id, CHARINDEX(',', A.jg_dm + ',', B.id) - B.id) , A.bz
FROM tb A, # B
WHERE SUBSTRING(',' + A.jg_dm, B.id, 1) = ','
) t
where jg_dm <> ''DROP TABLE #,tb/*
jg_dm bz
-------------------- ----------
001 111
001 125
002 125
003 达到
004 达到
005 达到(所影响的行数为 6 行)
*/