mysql> explain analyze select * from employees;
+-------------------------+--------------+-----------+--------------+-----------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+-------------------------------------------+---------+------+
| id                      | estRows      | actRows   | task         | access object   | execution info                                                                                                                                                                                                                                                                                                                                                                                                    | operator info                             | memory  | disk |
+-------------------------+--------------+-----------+--------------+-----------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+-------------------------------------------+---------+------+
| TableReader_11          | 436207616.00 | 603979776 | root         | partition:all   | time:13.4s, loops:590554, RU:0.000000, cop_task: {num: 10160, max: 0s, min: 0s, avg: 0s, p95: 0s, copr_cache_hit_ratio: 0.00}                                                                                                                                                                                                                                                                                     | MppVersion: 1, data:ExchangeSender_10     | 7.92 MB | N/A  |
| └─ExchangeSender_10     | 436207616.00 | 603979776 | mpp[tiflash] |                 | tiflash_task:{proc max:12.9s, min:12.6s, avg: 12.7s, p80:12.9s, p95:12.9s, iters:10283, tasks:2, threads:72}                                                                                                                                                                                                                                                                                                      | ExchangeType: PassThrough                 | N/A     | N/A  |
|   └─TableFullScan_9     | 436207616.00 | 603979776 | mpp[tiflash] | table:employees | tiflash_task:{proc max:137.4ms, min:121ms, avg: 129.2ms, p80:137.4ms, p95:137.4ms, iters:10283, tasks:2, threads:72}, tiflash_scan:{dtfile:{total_scanned_packs:94981, total_skipped_packs:15416, total_scanned_rows:774644749, total_skipped_rows:125859659, total_rs_index_load_time: 0ms, total_read_time: 35296ms}, total_create_snapshot_time: 3ms, total_local_region_num: 972, total_remote_region_num: 0} | keep order:false, PartitionTableScan:true | N/A     | N/A  |
+-------------------------+--------------+-----------+--------------+-----------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+-------------------------------------------+---------+------+
3 rows in set (13.45 sec)