message: uncommenting branch
diff: @@ -115,14 +115,14 @@ unique_ptr<PhysicalOperator> PhysicalPlanGenerator::CreatePlan(LogicalComparison
  op.left_projection_map, op.right_projection_map, tbl_scan.column_ids,
  right_index, true, op.estimated_cardinality);
  }
  - /* // equality join with dense keys: Make perfect hash table joins
  + // equality join with dense keys: Make perfect hash table joins
  auto stats = reinterpret_cast<NumericStatistics *>(op.join_stats[0].get()); // lhs stats
  auto join_keys_range = stats->max - stats->min; // Join Keys Range
  if (join_keys_range < PERFECT_HASH_THRESHOLD) {
  - return make_unique<PhysicalPerfectHashJoin>(op, move(left), move(right), move(op.conditions),
  - op.join_type, op.left_projection_map, op.right_projection_map, move(op.delim_types),
  - op.estimated_cardinality);
  - } */
  + return make_unique<PhysicalPerfectHashJoin>(op, move(left), move(right), move(op.conditions), op.join_type,
  + op.left_projection_map, op.right_projection_map,
  + move(op.delim_types), op.estimated_cardinality);
  + }
  // equality join: use hash join
  plan = make_unique<PhysicalHashJoin>(op, move(left), move(right), move(op.conditions), op.join_type,
  