split the column values in multiple column

Hello Experts:

I have following column value

/test1/folder/file__000000000__text.txt

I want to take the filename "file__000000000__text.txt"

and add in multiple columns like this

columnA      ColumnB        ColumnC
file                 000000000     text.txt
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CalmSoulAsked:
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Farzad AkbarnejadDeveloperCommented:
Hi,
suppose col of testqaq table contains   /test1/folder/file__000000000__text.txt
Try this:

select substr(substr(col, instr(col,'/',-1)+1), 1,4) as columnA,
           substr(substr(col, instr(col,'/',-1)+1), 7,9) as columnB,
        substr(substr(col, instr(col,'/',-1)+1), 18) as columnC,
  q.* from testqa q;

-FA
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slightwv (䄆 Netminder) Commented:
I assume the number of characters can change in the string.

Try this:
select
	regexp_substr(col,'[a-z]+',instr(col,'/',-1),1) colA,
	regexp_substr(col,'[0-9]+',instr(col,'/',-1),1) colB,
	regexp_substr(col,'[a-z.]+$') colC
from mydata
/

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CalmSoulAuthor Commented:
I don't want to select he column add data to new columns I.e split value in multiple columns a to c
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slightwv (䄆 Netminder) Commented:
>>I don't want to select he column add data to new columns I.e split value in multiple columns a to c

I don't understand what this means.

The queries above seem to provide your expected results.

If you want to put those values into a table, just add an insert or update to it.

update table set (colA,colB,colC) = (select regexp_substr(col,'[a-z]+',instr(col,'/',-1),1) colA,
      regexp_substr(col,'[0-9]+',instr(col,'/',-1),1) colB,
      regexp_substr(col,'[a-z.]+$') colC
from mydata
) where ...

If you can add more information to your question, we can provide more exact SQL.
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awking00Commented:
>>I don't want to select he column add data to new columns I.e split value in multiple columns a to c<<
Are you talking about adding three new columns to your existing table?
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slightwv (䄆 Netminder) Commented:
>>Are you talking about adding three new columns to your existing table?

If that is what you are after, I would look at using Virtual Columns with the regular expressions above.

Here is an example using Virtual Columns:
drop table tab1 purge;
create table tab1(
col varchar2(100),
colA varchar2(100) generated always as (regexp_substr(col,'[a-z]+',instr(col,'/',-1),1)),
colB varchar2(100) generated always as (regexp_substr(col,'[0-9]+',instr(col,'/',-1),1)),
colC varchar2(100) generated always as (regexp_substr(col,'[a-z.]+$'))
);


insert into tab1(col) values('/test1/folder/file__000000000__text.txt');
commit;

select * from tab1;

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