mysql> SELECT * FROM information_schema.optimizer_trace\G
*************************** 1. row ***************************
                            QUERY: SELECT * FROM film WHERE film_id IN (1,2,3,4,5)
                            TRACE: {
  "steps": [
    {
      "join_preparation": {
        "select#": 1,
        "steps": [
          {
            "IN_uses_bisection": true
          },
          {
            "expanded_query": "/* select#1 */ select `film`.`film_id` AS `film_id`,`film`.`title` AS `title`,`film`.`description` AS `description`,`film`.`release_year` AS `release_year`,`film`.`language_id` AS `language_id`,`film`.`original_language_id` AS `original_language_id`,`film`.`rental_duration` AS `rental_duration`,`film`.`rental_rate` AS `rental_rate`,`film`.`length` AS `length`,`film`.`replacement_cost` AS `replacement_cost`,`film`.`rating` AS `rating`,`film`.`special_features` AS `special_features`,`film`.`last_update` AS `last_update` from `film` where (`film`.`film_id` in (1,2,3,4,5))"
          }
        ]
      }
    },
    {
      "join_optimization": {
        "select#": 1,
        "steps": [
          {
            "condition_processing": {
              "condition": "WHERE",
              "original_condition": "(`film`.`film_id` in (1,2,3,4,5))",
              "steps": [
                {
                  "transformation": "equality_propagation",
                  "resulting_condition": "(`film`.`film_id` in (1,2,3,4,5))"
                },
                {
                  "transformation": "constant_propagation",
                  "resulting_condition": "(`film`.`film_id` in (1,2,3,4,5))"
                },
                {
                  "transformation": "trivial_condition_removal",
                  "resulting_condition": "(`film`.`film_id` in (1,2,3,4,5))"
                }
              ]
            }
          },
          {
            "table_dependencies": [
              {
                "table": "`film`",
                "row_may_be_null": false,
                "map_bit": 0,
                "depends_on_map_bits": [
                ]
              }
            ]
          },
          {
            "ref_optimizer_key_uses": [
            ]
          },
          {
            "rows_estimation": [
              {
                "table": "`film`",
                "range_analysis": {
                  "table_scan": {
                    "rows": 1000,
                    "cost": 214.1
                  },
                  "potential_range_indexes": [
                    {
                      "index": "PRIMARY",
                      "usable": true,
                      "key_parts": [
                        "film_id"
                      ]
                    },
                    {
                      "index": "idx_title",
                      "usable": false,
                      "cause": "not_applicable"
                    },
                    {
                      "index": "idx_fk_language_id",
                      "usable": false,
                      "cause": "not_applicable"
                    },
                    {
                      "index": "idx_fk_original_language_id",
                      "usable": false,
                      "cause": "not_applicable"
                    }
                  ],
                  "setup_range_conditions": [
                  ],
                  "group_index_range": {
                    "chosen": false,
                    "cause": "not_group_by_or_distinct"
                  },
                  "analyzing_range_alternatives": {
                    "range_scan_alternatives": [
                      {
                        "index": "PRIMARY",
                        "ranges": [
                          "1 <= film_id <= 1",
                          "2 <= film_id <= 2",
                          "3 <= film_id <= 3",
                          "4 <= film_id <= 4",
                          "5 <= film_id <= 5"
                        ],
                        "index_dives_for_eq_ranges": true,
                        "rowid_ordered": true,
                        "using_mrr": false,
                        "index_only": false,
                        "rows": 5,
                        "cost": 6.0168,
                        "chosen": true
                      }
                    ],
                    "analyzing_roworder_intersect": {
                      "usable": false,
                      "cause": "too_few_roworder_scans"
                    }
                  },
                  "chosen_range_access_summary": {
                    "range_access_plan": {
                      "type": "range_scan",
                      "index": "PRIMARY",
                      "rows": 5,
                      "ranges": [
                        "1 <= film_id <= 1",
                        "2 <= film_id <= 2",
                        "3 <= film_id <= 3",
                        "4 <= film_id <= 4",
                        "5 <= film_id <= 5"
                      ]
                    },
                    "rows_for_plan": 5,
                    "cost_for_plan": 6.0168,
                    "chosen": true
                  }
                }
              }
            ]
          },
          {
            "considered_execution_plans": [
              {
                "plan_prefix": [
                ],
                "table": "`film`",
                "best_access_path": {
                  "considered_access_paths": [
                    {
                      "rows_to_scan": 5,
                      "access_type": "range",
                      "range_details": {
                        "used_index": "PRIMARY"
                      },
                      "resulting_rows": 5,
                      "cost": 7.0168,
                      "chosen": true
                    }
                  ]
                },
                "condition_filtering_pct": 100,
                "rows_for_plan": 5,
                "cost_for_plan": 7.0168,
                "chosen": true
              }
            ]
          },
          {
            "attaching_conditions_to_tables": {
              "original_condition": "(`film`.`film_id` in (1,2,3,4,5))",
              "attached_conditions_computation": [
              ],
              "attached_conditions_summary": [
                {
                  "table": "`film`",
                  "attached": "(`film`.`film_id` in (1,2,3,4,5))"
                }
              ]
            }
          },
          {
            "refine_plan": [
              {
                "table": "`film`"
              }
            ]
          }
        ]
      }
    },
    {
      "join_execution": {
        "select#": 1,
        "steps": [
        ]
      }
    }
  ]
}
MISSING_BYTES_BEYOND_MAX_MEM_SIZE: 0
          INSUFFICIENT_PRIVILEGES: 0
1 row in set (0.00 sec)

mysql>