message: Foreignkey
  fix compile error
diff: @@ -891,8 +891,9 @@ void ART::VerifyExistence(DataChunk &chunk, VerifyExistenceType verify_type, str
  switch (verify_type) {
  case VerifyExistenceType::APPEND: {
  // node already exists in tree
  - string type = IndexConstraintType::PRIMARY ? "primary key" : "unique";
  - exception_msg = "duplicate key \"" + key_name + "\" violates " + type + " constraint";
  + string type = IsPrimary() ? "primary key" : "unique";
  + exception_msg = "duplicate key \"" + key_name + "\" violates ";
  + exception_msg += type + " constraint";
  }
  case VerifyExistenceType::APPEND_FK: {
  // found node no exists in tree
  