Please help with regular expression

Hello

With the help of my previous answers of the detachment, Re: procedure to extract several substring of a string , I've updated the query. But I don't get the answer you want in all cases. Could you please help me? My query is based on the previous announcement. Any other way to do this?
I'd really appreciate it.
select 
       ltrim ( regexp_substr(txt, '\[(\w+)', 1, level), '[')      as id, /* id is number */
       ltrim ( regexp_substr(ltrim ( regexp_substr(txt, ':[^]]+', 1, level), ':'), '\w+-*\d*', 1, 1), ':')  as qid, /* Qid could be char/number/space any combination except ':' */
       ltrim ( regexp_substr(ltrim ( regexp_substr(txt, ':[^]]+', 1, level), ':'), '\w+', 1, 2), ':')      as num,
      to_date( ltrim ( regexp_substr(ltrim ( regexp_substr(txt, ':[^]]+', 1, level), ':'), '[^:]+', 1, 3), ':'),'MM/DD/YY')   as effdate
from  (
                        select  '[10946:M100:N:][10947:Q1222:N:][38198:PPP-2:N:][13935:PPP-6:N:][38244:QQQ-4:Y:01/01/10]'     as txt
                        from     dual
         )
        connect by level <= length(regexp_replace(txt, '[^[]'));
I should get:
ID             QID          NUM         EFFDATE
10946     M100     N     
10947     Q1222     N     
38198     PPP-2     N     
13935     PPP-6     N     
38244     QQQ-4     Y     01-JAN-10
But, be
ID             QID          NUM          EFFDATE
10946     M100     N     
10947     Q1222     N     
38198     PPP-2     2     
13935     PPP-6     6     
38244     QQQ-4     4     01-JAN-10
Thank you

Hello

If the column number is wrong, isn't it?
Describe what should be the num column. For example "num is the 3rd part of :-delimited list placed in square brackets.

If this is what you want, and then change the definition of number of

...                     ltrim ( regexp_substr(ltrim ( regexp_substr(txt, ':[^]]+', 1, level), ':'), '\w+', 1, 2), ':')      as num,

TO

...                      REGEXP_SUBSTR  ( REGEXP_SUBSTR ( txt
                                      , '[^]]+'
                                            , 1
                                   , LEVEL
                                   )
                         , '[^:]+'
                         , 1
                         , 3
                         )       AS num,

Tags: Database

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  • Need help with regular expressions

    Hi all

    I need your help, because I have no ideas more...

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    Is it possible to do this using SELECT with regular expressions?

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    with t as (
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  select 'File_V04.txt' fn from dual union all
  select 'File2_v03.doc' fn from dual union all
  select 'File2_v115.doc' fn from dual union all
  select 'File2_v15.doc' fn from dual union all
  select 'File1_v03.doc' fn from dual union all
  select 'File1_v115.doc' fn from dual union all
  select 'File1_v999.doc' fn from dual union all
  select 'File2.doc' fn from dual union all
  select 'File2_v05.doc' fn from dual union all
  select 'File1_v01.txt' fn from dual union all
  select 'File1_v02.txt' fn from dual union all
  select 'File1_v1.txt' fn from dual union all
  select 'File1_v1.doc' fn from dual union all
  select 'File1_v2.txt' fn from dual union all
  select 'File2_v01.doc' fn from dual union all
  select 'File2_v02.doc' fn from dual union all
  select 'File1_ABC_v01_DEF.docx' fn from dual union all
  select 'File1_ABC_V02_ABC.docx' fn from dual union all
  select 'File1_ABC_v01_12_04_17.docx' fn from dual union all
  select 'ABC_V1_QWERT.pdf' fn from dual
)

select fn,
case when fn!=fn_new then
 last_value(fn_new)
 over(partition by regexp_replace(upper(fn),'V[[:digit:]]+','') --(.*?V0*)([1-9]+)(\..*?)$
 order by nv
 rows between unbounded preceding and unbounded following
 )
else fn
end fn_new
from (
    select
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)
order by fn

FN     FN_NEW
ABC_V1_QWERT.pdf     ABC_V2_QWERT.pdf
File_V04.txt     File_V06.txt
File_V05.txt     File_V06.txt
File1_ABC_v01_DEF.docx     File1_ABC_v02_DEF.docx
File1_ABC_v01_12_04_17.docx     File1_ABC_v02_12_04_17.docx
File1_ABC_V02_ABC.docx     File1_ABC_V03_ABC.docx
File1_v01.txt     File1_v3.txt
File1_v02.txt     File1_v3.txt
File1_v03.doc     File1_v1000.doc
File1_v1.doc     File1_v1000.doc
File1_v1.txt     File1_v3.txt
File1_v115.doc     File1_v1000.doc
File1_v2.txt     File1_v3.txt
File1_v999.doc     File1_v1000.doc
File2.doc     File2.doc
File2_v01.doc     File2_v116.doc
File2_v02.doc     File2_v116.doc
File2_v03.doc     File2_v116.doc
File2_v05.doc     File2_v116.doc
File2_v115.doc     File2_v116.doc
File2_v15.doc     File2_v116.doc

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    Hello
    I'm just experimenting with regular expressions

    My information in table are as shown below
    TABLE NAME: -  EMP_TEST

STRUCTURE WITH DATA

  X_NAME
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12456com
ab1245com
AXM4554.com
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