假设您的表名为“foo”,列名为“col”:
with q as (
select ','||regexp_replace(
regexp_replace(
regexp_replace(
regexp_replace(col, '[[0-9,]*]\(', ''),
'\[[0-9],', ''),
'[])]', ','),
',,+',
',') a from foo
)
select data
from (select substr(a, instr(a, ',', 1, rownum) + 1, 6) data
from q,
(select 1 from q connect by level < length(regexp_replace(a, '[0-9]', '')))
)
;
这是解释。这很快就会变得复杂,并且可能不会很好地扩展,所以买家要小心。
首先,我想摆脱 '[1,98](' 字段。
1 with q as (
2 select
3 regexp_replace(col, '[[0-9,]*]\(', '')
4 from foo
5 )
6* select * from q
REGEXP_REPLACE(COL,'[[0-9,]*]\(','')
------------------------------------------------------------------------------------------------------------------------------------
[6,100828],[6,101260])[6,100529],[6,101259])[6,101709],[6,100474]))
接下来我想去掉字段的“[n”部分。
1 with q as (
2 select
3 regexp_replace(
4 regexp_replace(col, '[[0-9,]*]\(', ''),
5 '\[[0-9],', ''
6 ) a from foo
7 )
8* select * from q
A
------------------------------------------------------------------------------------------------------------------------------------
100828],101260])100529],101259])101709],100474]))
现在摆脱所有 ']' 和 ')'
1 with q as (
2 select
3 regexp_replace(
4 regexp_replace(
5 regexp_replace(col, '[[0-9,]*]\(', ''),
6 '\[[0-9],', ''),
7 '[])]', ',')
8 a from foo
9 )
10* select * from q
A
------------------------------------------------------------------------------------------------------------------------------------
100828,,101260,,100529,,101259,,101709,,100474,,,
去掉重复的逗号并在前面加上逗号。
1 with q as (
2 select ','||regexp_replace(
3 regexp_replace(
4 regexp_replace(
5 regexp_replace(col, '[[0-9,]*]\(', ''),
6 '\[[0-9],', ''),
7 '[])]', ','),
8 ',,+',
9 ',') a from foo
10 )
11* select * from q
A
------------------------------------------------------------------------------------------------------------------------------------
,100828,101260,100529,101259,101709,100474,
弄清楚它们有多少个字段,并为每个字段创建一行。
1 with q as (
2 select ','||regexp_replace(
3 regexp_replace(
4 regexp_replace(
5 regexp_replace(col, '[[0-9,]*]\(', ''),
6 '\[[0-9],', ''),
7 '[])]', ','),
8 ',,+',
9 ',') a from foo
10 )
11* select 1 from q connect by level < length(regexp_replace(a, '[0-9]', ''))
1
----------
1
1
1
1
1
1
1
使用 q 进行笛卡尔连接(请注意,如果您的表中有不止一行,这将不起作用。)和一个子字符串来获得您的最终答案。
1 with q as (
2 select ','||regexp_replace(
3 regexp_replace(
4 regexp_replace(
5 regexp_replace(col, '[[0-9,]*]\(', ''),
6 '\[[0-9],', ''),
7 '[])]', ','),
8 ',,+',
9 ',') a from foo
10 )
11 select data
12 from (select substr(a, instr(a, ',', 1, rownum) + 1, 6) data
13 from q,
14 (select 1 from q connect by level < length(regexp_replace(a, '[0-9]', '')))
15* )
DATA
------
100828
101260
100529
101259
101709
100474
6 rows selected.