Grouping Rules in PL/SQL Help needed

Question

Hi I have a requirement where I wan to group based on the below scenario
I have a Table_A
Table_A strcuture:
create table table_a
code number,
name varchar2 (100),
city varchar2 (100),
dept varchar2 (100));;
insert into table_a
values
1,'ABC','EA','A');
insert into table_a
values
1,'ABC','EA1','A');
insert into table_a
values
2,'BCD','EA2','A');
insert into table_a
values
2,'ABC','EA3','A'');
insert into table_a
values
3,'KBC','EA,'A');
insert into table_a
values
3,'ABC','EA,'A');
wan to group the above table data based on name,city,dept
I wan the data  as
1           ABC             EA1    A
             BCD            EA2     A
2           BCD            EA2     A
             ABC            EA3     A
3           KBC            EA      A
             BCD            EA      A
Kindly any help will be needful for me

Answer 1

This is more of a presentation layer problem I would not handle it in SQL. For example if the presentation layer is SQL Plus you can use BREAK command, like this.
SQL> select * from table_a;
      CODE NAME       CITY       DEPT
         1 ABC        EA         A
         1 ABC        EA1        A
         2 BCD        EA2        A
         2 ABC        EA3        A
         3 KBC        EA         A
         3 ABC        EA         A
6 rows selected.
SQL> break on code
SQL>
SQL> select * from table_a order by code;
      CODE NAME       CITY       DEPT
         1 ABC        EA         A
           ABC        EA1        A
         2 BCD        EA2        A
           ABC        EA3        A
         3 KBC        EA         A
           ABC        EA         A
6 rows selected.
But if you still wish to do it in SQL the right way is to use ROW_NUMBER like this.
SQL> clear breaks
breaks cleared
SQL>
SQL> select * from table_a;
      CODE NAME       CITY       DEPT
         1 ABC        EA         A
         1 ABC        EA1        A
         2 BCD        EA2        A
         2 ABC        EA3        A
         3 KBC        EA         A
         3 ABC        EA         A
6 rows selected.
SQL> select decode(rno, 1, code) code
  2       , name
  3       , city
  4       , dept
  5    from (
  6           select row_number() over(partition by code order by name) rno
  7                , t.*
  8             from table_a t
  9         )
10  /
      CODE NAME       CITY       DEPT
         1 ABC        EA         A
           ABC        EA1        A
         2 ABC        EA3        A
           BCD        EA2        A
         3 ABC        EA         A
           KBC        EA         A
6 rows selected.