Output full path of hierarchy : Hierarchical Queries « Query Select « Oracle PL/SQL Tutorial

1. Oracle PL/SQL Tutorial
2. Query Select
3. Hierarchical Queries

SQL>
SQL> create table emp
  2  ( empno      NUMBER(4)    constraint E_PK primary key
  3  , ename      VARCHAR2(8)
  4  , init       VARCHAR2(5)
  5  , job        VARCHAR2(8)
  6  , mgr        NUMBER(4)
  7  , bdate      DATE
  8  , sal        NUMBER(6,2)
  9  , comm       NUMBER(6,2)
 10  , deptno     NUMBER(2)    default 10
 11  ) ;

Table created.

SQL> insert into emp values(1,'Tom','N',   'TRAINER', 13,date '1965-12-17',  800 , NULL,  20);

1 row created.

SQL> insert into emp values(2,'Jack','JAM', 'Tester',6,date '1961-02-20',  1600, 300,   30);

1 row created.

SQL> insert into emp values(3,'Wil','TF' ,  'Tester',6,date '1962-02-22',  1250, 500,   30);

1 row created.

SQL> insert into emp values(4,'Jane','JM',  'Designer', 9,date '1967-04-02',  2975, NULL,  20);

1 row created.

SQL> insert into emp values(5,'Mary','P',  'Tester',6,date '1956-09-28',  1250, 1400,  30);

1 row created.

SQL> insert into emp values(6,'Black','R',   'Designer', 9,date '1963-11-01',  2850, NULL,  30);

1 row created.

SQL> insert into emp values(7,'Chris','AB',  'Designer', 9,date '1965-06-09',  2450, NULL,  10);

1 row created.

SQL> insert into emp values(8,'Smart','SCJ', 'TRAINER', 4,date '1959-11-26',  3000, NULL,  20);

1 row created.

SQL> insert into emp values(9,'Peter','CC',   'Designer',NULL,date '1952-11-17',  5000, NULL,  10);

1 row created.

SQL> insert into emp values(10,'Take','JJ', 'Tester',6,date '1968-09-28',  1500, 0,     30);

1 row created.

SQL> insert into emp values(11,'Ana','AA',  'TRAINER', 8,date '1966-12-30',  1100, NULL,  20);

1 row created.

SQL> insert into emp values(12,'Jane','R',   'Manager',   6,date '1969-12-03',  800 , NULL,  30);

1 row created.

SQL> insert into emp values(13,'Fake','MG',   'TRAINER', 4,date '1959-02-13',  3000, NULL,  20);

1 row created.

SQL> insert into emp values(14,'Mike','TJA','Manager',   7,date '1962-01-23',  1300, NULL,  10);

1 row created.

SQL>
SQL> column  full_path format a40
SQL>
SQL> select  ename
  2  ,       connect_by_root ename            as Designer
  3  ,       sys_connect_by_path(ename,' > ') as full_path
  4  from    emp
  5  start   with job = 'Designer'
  6  connect by prior empno = mgr;

ENAME    DESIGNER FULL_PATH
-------- -------- ----------------------------------------
Jane     Jane      > Jane
Smart    Jane      > Jane > Smart
Ana      Jane      > Jane > Smart > Ana
Fake     Jane      > Jane > Fake
Tom      Jane      > Jane > Fake > Tom
Black    Black     > Black
Jack     Black     > Black > Jack
Wil      Black     > Black > Wil
Mary     Black     > Black > Mary
Take     Black     > Black > Take
Jane     Black     > Black > Jane
Chris    Chris     > Chris
Mike     Chris     > Chris > Mike
Peter    Peter     > Peter
Jane     Peter     > Peter > Jane
Smart    Peter     > Peter > Jane > Smart
Ana      Peter     > Peter > Jane > Smart > Ana
Fake     Peter     > Peter > Jane > Fake
Tom      Peter     > Peter > Jane > Fake > Tom

ENAME    DESIGNER FULL_PATH
-------- -------- ----------------------------------------
Black    Peter     > Peter > Black
Jack     Peter     > Peter > Black > Jack
Wil      Peter     > Peter > Black > Wil
Mary     Peter     > Peter > Black > Mary
Take     Peter     > Peter > Black > Take
Jane     Peter     > Peter > Black > Jane
Chris    Peter     > Peter > Chris
Mike     Peter     > Peter > Chris > Mike

27 rows selected.

SQL>
SQL>
SQL> drop table emp;

Table dropped.