NOTICE:  QUERY PLAN:

Merge Join  (cost=10.96 size=149 width=184)
  ->  Seq Scan on kunden k  (cost=2.39 size=42 width=28)
  ->  Merge Join  (cost=7.06 size=4 width=156)
        ->  Seq Scan on emp e  (cost=1.07 size=2 width=28)
        ->  Nested Loop  (cost=5.86 size=2 width=128)
              ->  Seq Scan on pausch p  (cost=1.07 size=2 width=52)
              ->  Index Scan using reise_2 on reise r  (cost=2.40 size=8 width=76)