presto-raptor-legacy/src/main/java/io/prestosql/plugin/raptor/legacy/RaptorMetadata.java/RaptorMetadata/dropView
class RaptorMetadata:    @Override
    public void dropView(ConnectorSession session, SchemaTableName viewName)
    {
        if (!viewExists(session, viewName)) {
            throw new ViewNotFoundException(viewName);
        }
        dao.dropView(viewName.getSchemaName(), viewName.getTableName());
    }