Question

CONNECT BY PRIOR Query

Asked by: ajexpert

Hi,
I was referring to this example
SELECT employee_id, last_name, manager_id, LEVEL
   FROM employees
   CONNECT BY PRIOR employee_id = manager_id;

Assuming we have only employee id and manager_id in employees table and their names are stored in other table say NAMES table with columns NAME_ID and NAME

My Question:
How to make the above query work with additional NAMES table

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Asked On
2009-10-21 at 15:29:29ID24832649
Tags

Oracle CONNECT BY

,

START WITH

,

PRIOR

Topic

Oracle Database

Participating Experts
3
Points
250
Comments
3

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Answers

 

by: lwadwellPosted on 2009-10-21 at 15:43:01ID: 25629264

Hi ajexpert,

try ... assuming the employee table also holds the name_id column to use to join to the names table:
SELECT e.employee_id, n.name, e.manager_id, LEVEL
FROM employees e
JOIN names n
ON e.name_id = n.name_id
CONNECT BY PRIOR e.employee_id = e.manager_id;


lwadwell

 

by: Ritesh_GargPosted on 2009-10-21 at 20:28:24ID: 25630583

Try this

SELECT e.employee_id, 
       e.manager_id, 
       LEVEL,
       en.name,
       mn.name
FROM   employees e
       names  en  -- For Employee Name
       names  mn  -- For Manager Name
where  en.employee_id = e.employee_id
and    mn.employee_id = e.manager_id     
CONNECT BY PRIOR employee_id = manager_id;

                                              
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by: sdstuberPosted on 2009-10-22 at 06:02:29ID: 25633593

SELECT employee_id, last_name, manager_id, LEVEL,
             (select name from names n where n.name_id = e.name_id) employee_name
   FROM employees e
   CONNECT BY PRIOR employee_id = manager_id;

20120131-EE-VQP-002

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