message: More fixes for pull request
diff: @@ -39,6 +39,8 @@ void CheckForPerfectJoinOpt(LogicalComparisonJoin &op, PerfectHashJoinStats &joi
  if (op.conditions.size() != 1)
  return;
  + if (op.join_stats.size() <= 0)
  + return;
  // with equality
  for (auto &&condition : op.conditions) {
  // check if it is equality
  