Help me with this requirement

Question

I have a requirement with a comma seperated string, I will try to explain with the following example
'COULUMN_NAME1,COLUMN_NAME1_NAME2,COLUMN_NAME1'
output required as below
'columnName1,columnName1Name2,columnName1'basically what I want is complete string to be converted to lowercase and then underscore should be removed and then after each _ the first character should be in lower case. I have tried like below
SQL> select replace(initcap('COULUMN_NAME1,COLUMN_NAME1_NAME2,COLUMN_NAME1'),'_',null) output_col fr
om dual;
OUTPUT_COL
CoulumnName1,ColumnName1Name2,ColumnName1Now my only requirement is to get the first character of every word after comma to be in lower case.
thanks in advance
Edited by: Qwerty on Feb 25, 2011 7:48 PM

Answer 1

Karthick_Arp wrote:
Try this
with t
as
select 'COULUMN_NAME1,COLUMN_NAME1_NAME2,COLUMN_NAME1'str
from dual
), t1
as
select level rno, lower(substr(replace(initcap(regexp_substr(str, '[^,]+', 1, level)),'_'),1,1)) ||
substr(replace(initcap(regexp_substr(str, '[^,]+', 1, level)),'_'),2) str
from t
connect by level <= length(str) - length(replace(str,','))+1
select ltrim(sys_connect_by_path(str,','),',') str
from t1
where connect_by_isleaf = 1
start with rno = 1
connect by rno = prior rno+1
Karthick - immense!