Insert grouped data - sql

Question

I am getting expected results from my query, I am using group by to group the data on the basis of different Ids.
The problem I am facing is that I have to insert this grouped data in the table called gstl_calculated_daily_fee, but when I pass the grouped result to variables called #total_mada_local_switch_high_value and #mada_range_id and insert them in the table then I get only the last result of the query in the table.
Sample result:
Fee range_id
1.23 1
1.22 2
2.33 3
I get only 2.33 and 1 after I insert but I have to insert the whole result in to the table.
Please suggest how can I insert the whole query result into the table. Below is the query:
DECLARE #total_mada_local_switch_high_value decimal(32,4) = 0.00;
DECLARE #mada_range_id int = 0;
select
#total_mada_local_switch_high_value = SUM(C.settlement_fees),
#mada_range_id = C.range_id
From
(
select
*
from
(
select
rowNumber = #previous_mada_switch_fee_volume_based_count + (ROW_NUMBER() OVER(PARTITION BY DATEPART(MONTH, x_datetime) ORDER BY x_datetime)),
tt.x_datetime
from gstl_trans_temp tt where (message_type_mapping = 0220) and card_type ='GEIDP1' and response_code IN(00,10,11) and tran_amount_req >= 5000
) A
CROSS APPLY
(
select
rtt.settlement_fees,
rtt.range_id
From gstl_mada_local_switch_fee_volume_based rtt
where A.rowNumber >= rtt.range_start
AND (A.rowNumber <= rtt.range_end OR rtt.range_end IS NULL)
) B
) C
group by CAST(C.x_datetime AS DATE),C.range_id
-- Insert Daily Volume
INSERT INTO
gstl_calculated_daily_fee(business_date,fee_type,fee_total,range_id)
VALUES
(#tlf_business_date,'MADA_SWITCH_FEE_LOCAL_CARD', #total_mada_local_switch_high_value, #mada_range_id)

Answer 1

I see no need for variables here. You can insert the aggregated results directly.
Sample data
create table Data
(
Range int,
Fee money
);
insert into Data (Range, Fee) values
(1, 1.00),
(1, 0.50),
(2, 3.00),
(3, 0.25),
(3, 0.50);
create table DataSum
(
Range int,
FeeSum money
);
Solution
insert into DataSum (Range, FeeSum)
select d.Range, sum(d.Fee)
from Data d
group by d.Range;
Fiddle to see things in action.