Cursor group by error

Question

I have the following cursor defined in a oracle procedure:
Cursor counts_cursor_comb is
Select period, sum(count) as count, sum(group_cnt_total) as group_cnt_total, sum(total_income) as total_income,
sum(group_income_total) as group_income_total, sum(total_itd) as total_itd, sum(group_itd_amt) as group_itd_amt
From rpt_recency_counts_report
Where trim(country) = 'US'
Group by trim(period);
The SQL runs fine in SQL Worksheet
but when I run it in my procedure I get the following error:
ERROR at line 1:
ORA-00937: not a single-group group function
ORA-06512: at "DEMO.P_RECENCY_COUNTS_REPORT", line 63
ORA-06512: at "DEMO.P_RECENCY_COUNTS_REPORT", line 635
ORA-06512: at line 1
line 63 is where the cursor is defined and line 635 is where I open it.
Any help would be appreciated.
Thanks,
Ravi

Answer 1

Try removing the trim() from the GROUP BY, or add it to the select