NTree Example 2: Find Employee Management Chain - Teradata Vantage

Input

• employee_table, as in NTree Example 1: Find Employee Reports

SQL Call

This call finds the management chain of employee 500 by traversing the tree of employees from employee 500 upward.

SELECT * FROM NTree@coprocessor (
  ON employee_table PARTITION BY 1
  USING
  Root_Node (mgr_id IS NULL)
  Node_ID (emp_id)
  Parent_ID (mgr_id)
  Starts_With (emp_id=500) 
  Mode ('up') 
  Output ('end')
  Result (PATH(emp_name) AS path)
) AS dt ORDER BY 1;

Output

The output table shows that employee 500, Fred, reports to Kim, who reports to Pat, who reports to Don.