Data splitting into different rows

Question

Hi
I have 2 columsn in table. Like this
Record ID Error Code
10 ABC,TRE,SDE,AQX,....
I want to change this format to like this
Record ID Error Code
10 ABC
10 TRE
10 SDE
10 AQX
If anybody knows please reply me.
Thanks

Answer 1

If you have more than one row in your table you have to do something like this, else the examples above will not work:
Based on the examples from Alex, see my previous link
SQL> -- generating sample data:
SQL> with t as (
  2  select 10 rec_id, 'ABC,TRE,SDE,AQX' err_code from dual union
  3  select 20 rec_id, 'BLA,YADDAH,STR' err_code from dual
  4  )
  5  --
  6  -- actual query
  7  --
  8  select rec_id
  9  ,      regexp_substr(err_code, '[^,]+', 1, rn) err_code
10  from   t
11  cross join ( select rownum rn
12               from ( select max(length(regexp_replace(err_code, '[^,]+'))) + 1 mx
13                      from   t
14                     )
15               connect by level <= mx
16             )
17  where regexp_substr(err_code, '[^,]+', 1, rn) is not null
18  order by rec_id;
    REC_ID ERR_CODE
        10 ABC
        10 SDE
        10 TRE
        10 AQX
        20 STR
        20 BLA
        20 YADDAH
7 rows selected.