Ändra din proc som nedan
BEGIN
-- Use another variable and initialize with count(*) from prev_month (say totalCount)
-- Initialize another counter say curCount = 0
--
FOR x IN (select time_stamp from prev_month)
LOOP
-- increment curCount. If curCount = totalCount
-- then use
-- l_query := l_query|| REPLACE (' TO_DATE(''$X$'',''yyyymmdd'') as DAY_$X$_TOTAL ','$X$',x.time_stamp); --your code without comma at the end.
-- else
l_query := l_query|| REPLACE (' TO_DATE(''$X$'',''yyyymmdd'') as DAY_$X$_TOTAL, ','$X$',x.time_stamp);
-- end if.
END LOOP;
EDIT:Exakt syntax
BEGIN
curCount := 0;
SELECT COUNT (*) INTO o_count FROM prev_month;
FOR x IN (select time_stamp from prev_month)
LOOP
curCount := curCount +1; -- increment curCount.
IF curCount = o_count THEN
l_query :=l_query|| REPLACE (' TO_DATE(''$X$'',''yyyymmdd'') as DAY_$X$_TOTAL ','$X$',x.time_stamp);
else
l_query := l_query|| REPLACE (' TO_DATE(''$X$'',''yyyymmdd'') as DAY_$X$_TOTAL, ','$X$',x.time_stamp);
end if.
END LOOP;