How to achieve grouping of data based on one column
Hello PL/SQL Gurus/experts,
I am using Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - 64bit Production version
I have following table -
DROP TABLE T2;
create table T2(Manager,Employee) as select
'Nikki','Ram' from dual union all select
'Nina', 'Rita' from DUAL union all select
'Mike', 'Radha' from dual union all select
'Michael', 'Ratnam' from DUAL union all select
'Hendi', 'Ratna' from dual union all select
'Robert', 'Raman' from dual union all select
'Maria', 'Rolly' from dual union all select
'Kistrien', 'Rachna' from dual union all select
'Andrew', 'Ritvik' from dual union all select
'Emma', 'Ramesh' from dual union all select
'Andy', 'Ranpal' from dual union all select
'Brandy', 'Raunak' from dual union all select
'Nikki','Shyam' from dual union all select
'Nina', 'Sita' from DUAL union all select
'Mike', 'Sadhna' from dual union all select
'Michael', 'Satnam' from DUAL union all select
'Hendi', 'Satna' from dual union all select
'Robert', 'Samar' from dual union all select
'Maria', 'Sameer' from dual union all select
'Kistrien', 'Samrachna' from dual union all select
'Andrew', 'Satvik' from dual union all select
'Emma', 'Somesh' from dual union all select
'Andy', 'Sonpal' from dual union all select
'Brandy', 'Samar' from dual union all select
'Emma', 'Piyush' from dual union all select
'Andy', 'Pavan' from dual union all select
'Brandy', 'Paramjeet' from dual;Expected output -
Manager Employee
Nikki
Ram
Shyam
Nina Rita
Sita
Mike Radha
Sadhna
Michael Ratnam
Satnam
Hendi Ratna
Satna
Robert Raman
Samar
Maria Rolly
Sameer
Kistrien Rachna
Samrachna
Andrew Ritvik
Satvik
Emma Ramesh
Somesh
Piyush
Andy Ranpal
Sonpal
Pavan
Brandy Raunak
Samar
ParamjeetI thank to all of you in advance for your valuable time and inputs
In SQL, something like this...
SQL> ed
Wrote file afiedt.buf
1 select case when row_number() over (partition by emp.manager order by employee) = 1 then
2 mgr.manager
3 else
4 null
5 end as manager
6 ,emp.employee
7 from (select distinct manager from t2) mgr
8 join t2 emp on (mgr.manager = emp.manager)
9* order by mgr.manager, emp.employee
SQL> /
MANAGER EMPLOYEE
Andrew Ritvik
Satvik
Andy Pavan
Ranpal
Sonpal
Brandy Paramjeet
Raunak
Samar
Emma Piyush
Ramesh
Somesh
Hendi Ratna
Satna
Kistrien Rachna
Samrachna
Maria Rolly
Sameer
Michael Ratnam
Satnam
Mike Radha
Sadhna
Nikki Ram
Shyam
Nina Rita
Sita
Robert Raman
Samar
27 rows selected.If you want the managers on their own row with the employees underneath then you'll have to fudge it.
SQL> ed
Wrote file afiedt.buf
1 select case when row_number() over (partition by emp.manager order by employee nulls first) = 1 then
2 mgr.manager
3 else
4 null
5 end as manager
6 ,emp.employee
7 from (select distinct manager from t2) mgr
8 join
9 (select distinct manager, null as employee from t2
10 union all
11 select manager, employee from t2
12 ) emp on (mgr.manager = emp.manager)
13* order by mgr.manager, emp.employee nulls first
SQL> /
MANAGER EMPLOYEE
Andrew
Ritvik
Satvik
Andy
Pavan
Ranpal
Sonpal
Brandy
Paramjeet
Raunak
Samar
Emma
Piyush
Ramesh
Somesh
Hendi
Ratna
Satna
Kistrien
Rachna
Samrachna
Maria
Rolly
Sameer
Michael
Ratnam
Satnam
Mike
Radha
Sadhna
Nikki
Ram
Shyam
Nina
Rita
Sita
Robert
Raman
Samar
39 rows selected.
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How to split the data based on one column
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I have the table data like this.
type quantity revenue_mny count country
a 10 10 2 India
a 20 12 3 India
b 30 15 1 India
a 35 20 2 US
b 20 10 1 US
b 60 15 1 US
I woulkd like to split the date based on type column.
For each country, for Type "a" get the sum of revenue count quanity ans same for b
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India 22 30 5 15 30 1
US 20 35 2 25 80 2
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Please need your heloLike this?
with t as
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select 'b', 20, 10, 1, 'US' from dual union all
select 'b', 60, 15, 1, 'US' from dual
select country,
sum(case when type='a' then revenue_mny else 0 end ) revenue_mny_a,
sum(case when type='a' then quantity else 0 end) quantity_a,
sum(case when type='a' then cnt else 0 end) cnt_a,
sum(case when type='b' then revenue_mny else 0 end ) revenue_mny_b,
sum(case when type='b' then quantity else 0 end) quantity_b ,
sum(case when type='b' then cnt else 0 end) cnt_b
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US 20 35 2 25 80 2Or you can do it with a decode instead of case. The result will be the same:
with t as
select 'a' type, 10 quantity, 10 revenue_mny, 2 cnt, 'India' country from dual union all
select 'a', 20, 12, 3, 'India' from dual union all
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select 'b', 60, 15, 1, 'US' from dual
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sum(decode(type,'a',revenue_mny,0)) revenue_mny_a,
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