Get a particular column value count in oracle with inner join - oracle

Question

I am having 2 tables by joining both i am getting some columns and values
Select
tbl_orderdetails.category_name,
tbl_orderdetails.branch_name,
tbl_ordermaster.created_date,
tbl_ordermaster.user_id,
tbl_orderdetails.order_details_id,
tbl_orderdetails.branch_id
From tbl_orderdetails Inner Join tbl_ordermaster ON
tbl_orderdetails.order_master_id=tbl_ordermaster.ordermasterid
where tbl_ordermaster.user_id='12'
I want to get number of times a particular branch name came.I used count but its not working and i want only max number of times the branch name came and top 3 to be displayed .
Eg:
vellore=100,
chennai=18,
tvl=80,
harithuwar=90
It should display only
vellore
harithwar
tvl
sample data
orderdetails
orderdatailsid | order_master_id |branchname| category| branchid
1 | 112 | vellore | nad | 123
2 | 112 | vellore | hu | 123
3 | 113 | chennai | ji | 121
4 | 112 | vellore | hi | 123
5 | 134 | tvl | ui | 145
6 | 134 | tvl | jo | 145
masterdetails
ordermasterid | userid
112 | 12
113 | 13
134 | 14

Answer 1

Try this
SELECT T.*,S.* FROM
(
Select TD.category_name,TD.branch_name,TM.created_date,TM.user_id,TD.order_details_id,TD.branch_id
From tbl_orderdetails TD Inner Join tbl_ordermaster TM ON
TD.order_master_id = TM.ordermasterid
Where TM.user_id='12'
) T Left Join
(
Select T1.branch_name,Count(T1.branch_name) As No_Of_Branch
From tbl_orderdetails T1 Inner Join tbl_ordermaster T2 ON
T1.order_master_id = T2.ordermasterid
Where T2.user_id='12'
Group By T1.branch_name
) S On S.branch_name = T.branch_name
Update
If you want to get Max of count
Try this
SELECT T.*,S.* FROM
(
Select TD.category_name,TD.branch_name,TM.created_date,TM.user_id,TD.order_details_id,TD.branch_id
From tbl_orderdetails TD Inner Join tbl_ordermaster TM ON
TD.order_master_id = TM.ordermasterid
Where TM.user_id='12'
) T Inner Join
(
SELECT M.branch_name,Max(M.No_Of_Branch) FROM
(
Select T1.branch_name,Count(T1.branch_name) As No_Of_Branch
From tbl_orderdetails T1 Inner Join tbl_ordermaster T2 ON
T1.order_master_id = T2.ordermasterid
Where T2.user_id='12'
Group By T1.branch_name
) M Group By M.branch_name
) S On S.branch_name = T.branch_name

Answer 2

Try this Count is working good below the Examples,
create table orderdetails(orderdatailsid number, order_master_id number,branchname varchar(20), category varchar(20), branchid number);
insert into orderdetails values (1 , 112 ,'vellore','nad', 123);
insert into orderdetails values (2 , 112 ,'vellore','hu', 123);
insert into orderdetails values (3 , 113 , 'chennai','ji', 121);
insert into orderdetails values (4 , 112 , 'vellore' ,'hi', 123);
insert into orderdetails values (5 , 134 , 'tvl','ui', 145);
insert into orderdetails values (6 , 134 , 'tvl','jo', 145);
insert into orderdetails values (7 , 113 , 'chennai','ji', 121);
insert into orderdetails values (8 , 112 , 'vellore','hi', 123);
insert into orderdetails values (9 , 134 , 'tvl','ui', 145);
select * from orderdetails;
create table masterdetails(ordermasterid number, userid number);
insert into masterdetails values(112 , 12);
insert into masterdetails values(113 , 13);
insert into masterdetails values(134 ,14);
select * from masterdetails;
SELECT * FROM (
SELECT orderdetails.branchname, count(*) as Cout
From orderdetails left Join masterdetails ON
orderdetails.order_master_id=masterdetails.ordermasterid
group by orderdetails.branchname
order by cout desc
) WHERE ROWNUM <4;