SELECT `sys` . `format_path` ( `performance_schema` . `file_summary_by_instance` . `FILE_NAME` ) AS `file` , `performance_schema` . `file_summary_by_instance` . `COUNT_READ` AS `count_read` , `sys` . `format_bytes` ( `performance_schema` . `file_summary_by_instance` . `SUM_NUMBER_OF_BYTES_READ` ) AS `total_read` , `sys` . `format_bytes` ( `ifnull` ( ( `performance_schema` . `file_summary_by_instance` . `SUM_NUMBER_OF_BYTES_READ` / `nullif` ( `performance_schema` . `file_summary_by_instance` . `COUNT_READ` , ? ) ) , ? ) ) AS `avg_read` , `performance_schema` . `file_summary_by_instance` . `COUNT_WRITE` AS `count_write` , `sys` . `format_bytes` ( `performance_schema` . `file_summary_by_instance` . `SUM_NUMBER_OF_BYTES_WRITE` ) AS `total_written` , `sys` . `format_bytes` ( `ifnull` ( ( `performance_schema` . `file_summary_by_instance` . `SUM_NUMBER_OF_BYTES_WRITE` / `nullif` ( `performance_schema` . `file_summary_by_instance` . `COUNT_WRITE` , ? ) ) , ? ) ) AS `avg_write` , 