Method ClearDescriptors

src/colmap/scene/database_sqlite.cc:1618–1622

  }

  void ClearDescriptors() override {
    Sqlite3StmtContext context(sql_stmt_clear_descriptors_);
    SQLITE3_CALL(sqlite3_step(sql_stmt_clear_descriptors_));
    database_entry_deleted_ = true;
  }

  void ClearKeypoints() override {
    Sqlite3StmtContext context(sql_stmt_clear_keypoints_);