sys_connect_by_path demo
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>
SQL> select ename
2 , sys_connect_by_path(ename,'|') as path
3 from emp
4 start with mgr is null
5 connect by prior empno = mgr
6 order siblings by ename;
ENAME
--------
PATH
--------------------------------------------------------------------------------
Peter
|Peter
Black
|Peter|Black
Jack
|Peter|Black|Jack
Jane
|Peter|Black|Jane
Mary
|Peter|Black|Mary
Take
|Peter|Black|Take
ENAME
--------
PATH
--------------------------------------------------------------------------------
Wil
|Peter|Black|Wil
Chris
|Peter|Chris
Mike
|Peter|Chris|Mike
Jane
|Peter|Jane
Fake
|Peter|Jane|Fake
Tom
ENAME
--------
PATH
--------------------------------------------------------------------------------
|Peter|Jane|Fake|Tom
Smart
|Peter|Jane|Smart
Ana
|Peter|Jane|Smart|Ana
14 rows selected.
SQL> /
ENAME
--------
PATH
--------------------------------------------------------------------------------
Peter
|Peter
Black
|Peter|Black
Jack
|Peter|Black|Jack
Jane
|Peter|Black|Jane
Mary
|Peter|Black|Mary
Take
|Peter|Black|Take
ENAME
--------
PATH
--------------------------------------------------------------------------------
Wil
|Peter|Black|Wil
Chris
|Peter|Chris
Mike
|Peter|Chris|Mike
Jane
|Peter|Jane
Fake
|Peter|Jane|Fake
Tom
ENAME
--------
PATH
--------------------------------------------------------------------------------
|Peter|Jane|Fake|Tom
Smart
|Peter|Jane|Smart
Ana
|Peter|Jane|Smart|Ana
14 rows selected.
SQL>
SQL>
SQL> drop table emp;
Table dropped.
SQL>
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