Oracle equivalent of sql server CLRSplitSting function

Question

Hello Friends,
I have a query in SQL Server - which is getting data .
select addl_info_id, sort_seq, code, row_data, addl_info_group_id, group_sort_seq, group_row_data       from dbo.CLRSplitString('2406081,2410381,2427008,2430449,2466981,2495083,1586420,2406081,2410381,2427008,2430449,2466981,2495083,1586420','',',') x         join ein_addl_info_v v on x.col1 = v.addl_info_id       order by sort_seq
we have same data in oracle too so I converted the above sql server query to ORACLE Like this ..
select addl_info_id, sort_seq, code, row_data, addl_info_group_id, group_sort_seq, group_row_data from ( with t as (
select '2406081,2410381,2427008,2430449,2466981,2495083,1586420,2406081,2410381,2427008,2430449,2466981,2495083,1586420','',',' str from dual
*)select regexp_substr(str,'[^,]+',1,level) sub_str from t connect by level <= regexp_count(str,',') + 1) x*
join cnh_cs_targ_csce_eur_1.ein_addl_info_v v  on x.sub_str= v.addl_info_id     order by sort_seq
but I am not getting any data . Can any one check whether the above oracle query is equivalent to SQL query stated above .
thanks/Kumar
Edited by: kumar73 on 15 Feb, 2013 8:47 AM

Answer 1

Here your code:
WITH t AS
   SELECT '2406081,2410381,2427008,2430449,2466981,2495083,1586420,2406081,2410381,2427008,2430449,2466981,2495083,1586420' str
    FROM DUAL
SELECT REGEXP_SUBSTR (str, '[^,]+', 1, LEVEL) sub_str
   FROM t
CONNECT BY LEVEL <= REGEXP_COUNT (str, '[^,]+');The reason of the problem is that in your query the column str was having value , (comma). Your query:
select '2406081,2410381,2427008,2430449,2466981,2495083,1586420,2406081,2410381,2427008,2430449,2466981,2495083,1586420','',',' str from dual;was returning 3 columns.
I have also modified the condition in REGEXP_COUNT.
Regards.
Al
Edited by: Alberto Faenza on Feb 15, 2013 5:53 PM
Explanation added.