Leave only ODBCDriver2.
/** A data format designed to simplify the implementation of the ODBC driver.
  * ODBC driver is designed to be build for different platforms without dependencies from the main code,
  *  so the format is made that way so that it can be as easy as possible to parse it.
  * A header is displayed with the required information.
  * The data is then output in the order of the rows. Each value is displayed as follows: length in VarUInt format, then data in text form.
  */
class ODBCDriverBlockOutputFormat : public IOutputFormat
{
public:
    ODBCDriverBlockOutputFormat(WriteBuffer & out_, const Block & header_, const FormatSettings & format_settings_);
    String getName() const override { return "ODBCDriverBlockOutputFormat"; }
    void consume(Chunk) override;
    void finalize() override;
    std::string getContentType() const override { return "application/octet-stream"; }
private:
    const FormatSettings format_settings;
    bool prefix_written = false;
    void writePrefixIfNot()
    {
        if (!prefix_written)
            writePrefix();
        prefix_written = true;
    }
    void writePrefix();
};
}