How to rtrim the extra comma at the end

Question

Dear Gurus,
I am trying to trim the extra comma at the end of the sentence but I am not able to trim it at all this is for cursor loop in formula column trigger. Is RTRIM a rightful command to use here! Any Suggestions.
for c1 in (select crv.x crc
from x table
where crv.x = xyz)
loop
if     p_count >= 1 then
     v_descr := v_descr||C1.CRC||', ' ;
end if;
end loop;
return rtrim(v_descr,',');
RESULT IS = ' 010, 002, 115, '

Answer 1

Dear,
Instead of using rtrim function, you can get the desired result by adding a code line and placing the comma at the start as below:
(the added code lines are in bold)
if p_count >= 1 then
if v_descr = '' then
v_descr := C1.CRC;
else
v_descr := v_descr||', '||C1.CRC;
end if;
end if;
end loop;