Skip Headers
Oracle® Database SQL Language Reference
11g Release 2 (11.2)

E41084-03
Go to Documentation Home
Home
Go to Book List
Book List
Go to Table of Contents
Contents
Go to Index
Index
Go to Master Index
Master Index
Go to Feedback page
Contact Us

Go to previous page
Previous
Go to next page
Next
PDF · Mobi · ePub

SYS_CONNECT_BY_PATH

Syntax

Description of sys_connect_by_path.gif follows
Description of the illustration sys_connect_by_path.gif

Purpose

SYS_CONNECT_BY_PATH is valid only in hierarchical queries. It returns the path of a column value from root to node, with column values separated by char for each row returned by CONNECT BY condition.

Both column and char can be any of the data types CHAR, VARCHAR2, NCHAR, or NVARCHAR2. The string returned is of VARCHAR2 data type and is in the same character set as column.

See Also:

"Hierarchical Queries" for more information about hierarchical queries and CONNECT BY conditions

Examples

The following example returns the path of employee names from employee Kochhar to all employees of Kochhar (and their employees):

SELECT LPAD(' ', 2*level-1)||SYS_CONNECT_BY_PATH(last_name, '/') "Path"
   FROM employees
   START WITH last_name = 'Kochhar'
   CONNECT BY PRIOR employee_id = manager_id;

Path
------------------------------
     /Kochhar/Greenberg/Chen
     /Kochhar/Greenberg/Faviet
     /Kochhar/Greenberg/Popp
     /Kochhar/Greenberg/Sciarra
     /Kochhar/Greenberg/Urman
     /Kochhar/Higgins/Gietz
   /Kochhar/Baer
   /Kochhar/Greenberg
   /Kochhar/Higgins
   /Kochhar/Mavris
   /Kochhar/Whalen
 /Kochhar