How to merge dates in the same year in one column in rdlc report ?

Question

dears 
I need to create like this report but I cannot merge the transactions in the days in one column return to the month as in the table
Delivery Schedule
2010
2011
2012
2013
2014
Model / Month
Total
Total
Total
Total
Jan
Feb
March
April
May
June
July
Aug
Sep
Oct
Nov
Dec
Total
item1
0
item2
11
1
1
2
item3
3
1
1
2
item4
14
1
1
1
1
1
1
1
7
item5
10
2
2
1
1
1
4
10
1
1
1
1
25
item6
0
item7
7
1
1
2
1
1
1
7
item8
19
4
4
5
11
10
4
7
13
2
5
3
68
item9
1
2
1
1
5
item10
15
3
5
5
5
8
5
3
7
5
8
1
3
58
item11
63
15
8
4
12
6
11
8
7
24
11
6
112
item12
3
1
1
1
1
1
2
1
2
10
item13
32
3
7
7
7
8
5
5
10
2
54
item14
16
3
2
5
7
9
8
6
3
2
45
Total Delivery
0
0
0
193
29
29
21
26
51
36
40
40
44
38
25
16
395

Answer 1

Hi Eng ,
Based on my understanding, the date field exists in the database, then you want to display the corresponding year and month within the report and perform sum total,right?
In your scenario, since you haven’t provided the sample data, we create the database with some data. Then design the report with the structure you provided. Please refer to our test steps and results:
1. Create the database with the query below:
create table test1
[item] nvarchar(50),
[date] date,
value int)
insert into test1 values
('item1','2014/02/08',10),
('item2','2014/02/22',56),
('item3','2014/07/18',45),
('item3','2014/07/18',40),
('item4','2015/02/26',36),
('item5','2015/02/12',79)
2. Design the report like below:
3. Preview the report.
If you have any question, please feel free to ask.
Best regards,
Qiuyun Yu
Qiuyun Yu
TechNet Community Support