SQL-MapReduce Call - Aster Analytics

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

SELECT * FROM ntree (
  ON employee_table PARTITION BY 1
  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)
) ORDER BY 1;