Simple question: how to divide the string into multiple lines concatenated?

Hi people,

Maybe it's an easy question.

How to split a string that is concatenated into multiple lines by using the SQL query?

ENTRY:
select 'AAA,BBB,CC,DDDD' as data from dual
Delimiter = ', '.

Expected results:
data
------------
AAA
BBB
CCC
DDDD
I'm looking for something nice to feature "an opposite to «sys_connect_by_path»»

Thank you
Tomas
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with t as (select 'aaaa,,bbbb,cccc,dddd,eeee,ffff' as txt from dual)
-- end of sample data
select REGEXP_SUBSTR (txt, '[^,]+', 1, level)
from t
connect by level <= length(regexp_replace(txt,'[^,]*'))+1

REGEXP_SUBSTR(TXT,'[^,]+',1,LE
------------------------------
aaaa
bbbb
cccc
dddd
eeee
ffff

Tags: Database

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