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行转列
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作者: atgc(http://atgc.itpub.net)
发表于: 2007.01.14 12:29
分类: 技术文章
出处: http://atgc.itpub.net/post/22412/251110
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发表于: 2007.01.14 12:29
分类: 技术文章
出处: http://atgc.itpub.net/post/22412/251110
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SQL> select * from test;
ID MC
---------- -------------
1 11111
1 22222
2 11111
2 22222
3 11111
3 22222
3 33333
已选择7行。
SQL> select id,ltrim(max(sys_connect_by_path(mc,',')),',') row2col
from (select id,mc,
id+(row_number() over(order by id)) node_id,
row_number() over(partition by id order by id) rn
from test)
start with rn = 1
connect by node_id-1 = prior node_id
group by id
order by id;
ID ROW2COL
---------- -------------------------------------------------------------
1 11111,22222
2 11111,22222
3 11111,22222,33333
SQL> select id,replace(max(sys_connect_by_path(mc,',')),',') row2col
from (select id,mc,
id+(row_number() over(order by id)) node_id,
row_number() over(partition by id order by id) rn
from test)
start with rn = 1
connect by node_id-1 = prior node_id
group by id
order by id;
ID ROW2COL
---------- ------------------------------------------------------------
1 1111122222
2 1111122222
3 111112222233333
ID MC
---------- -------------
1 11111
1 22222
2 11111
2 22222
3 11111
3 22222
3 33333
已选择7行。
SQL> select id,ltrim(max(sys_connect_by_path(mc,',')),',') row2col
from (select id,mc,
id+(row_number() over(order by id)) node_id,
row_number() over(partition by id order by id) rn
from test)
start with rn = 1
connect by node_id-1 = prior node_id
group by id
order by id;
ID ROW2COL
---------- -------------------------------------------------------------
1 11111,22222
2 11111,22222
3 11111,22222,33333
SQL> select id,replace(max(sys_connect_by_path(mc,',')),',') row2col
from (select id,mc,
id+(row_number() over(order by id)) node_id,
row_number() over(partition by id order by id) rn
from test)
start with rn = 1
connect by node_id-1 = prior node_id
group by id
order by id;
ID ROW2COL
---------- ------------------------------------------------------------
1 1111122222
2 1111122222
3 111112222233333
