Differences

This shows you the differences between two versions of the page.

--- kurs:connect_by_prior [2012/10/04 14:57]
mh
+++ kurs:connect_by_prior [2019/05/23 15:00] (current)
admin
@@ Line 53: / Line 53: @@
 ) connect by prior rn = rn-1
 start with rn = 1
+</code>
+=== Ähnliches Resultat, plain SQL ===
+<code>
+select a.first_name,
+        a.last_name, a.salary,
+        max(b.salary), (max(b.salary)-a.salary)
+from employees a join employees b
+on a.salary > b.salary
+and  a.employee_id <> b.employee_id
+group by a.first_name, a.last_name, a.salary
+order by a.salary desc;
+</code>
+=== Hierchie in einer Zeile ===
+<code>
+select first_name || ' ' || last_name employee_name,
+      level, lpad('>', level * 3, '*') p,
+       sys_connect_by_path ( first_name || ' ' || last_name, '/') h
+from employees e
+connect by prior employee_id = manager_id
+start with employee_id = (select employee_id from employees where manager_id is null) -- = 100
 </code>

dokuwiki