Beispiel #1
0
 public long getCardinality(Join join, BindingSet bindings) {
   long card1 = getCardinality(join.getLeftArg(), bindings);
   long card2 = getCardinality(join.getRightArg(), bindings);
   double sel = 0.5;
   return (long) (card1 * card2 * sel);
 }