Regd:- hierarchy level query help.

Question

Dear Friends,
i have query like below.
select empid ,empname from employee; (Deptid FK with department master table.)
now i want to display department name also in above query. from Select deptname from dept;
in deprtment table master table data as below...
deptid deptname
1 IT
2 SALES
3 BOE
4 ACCOUNTS
but i want output like below...
EMPID ENAME DEPTNAME
101 JON SALES,BOE,IT
102 JEK SYS,ACCOUNTS.
how should written the query...?
pls help.

Answer 1

Try this
with employee
as
select 100 empno, 'karthick' ename from dual
union all
select 101 empno, 'rajnish' ename from dual
, dept
as
select 100 empno, 'IT' dname from dual
union all
select 100 empno, 'SALES' dname from dual
union all
select 101 empno, 'IT' dname from dual
select empno, ename, ltrim(sys_connect_by_path(dname,','),',') dname
  from (
          select e.empno, e.ename, d.dname, row_number() over(partition by e.empno order by d.dname) rno
            from employee e
            join dept d
              on e.empno = d.empno
where connect_by_isleaf = 1
start with rno = 1
connect by empno = prior empno
   and rno = prior rno+1and
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