{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "22.41"
},
"table": {
"table_name": "q_categories",
"access_type": "range",
"possible_keys": [
"parent"
],
"key": "parent",
"used_key_parts": [
"parent_id"
],
"key_length": "3",
"rows_examined_per_scan": 11,
"rows_produced_per_join": 11,
"filtered": "100.00",
"index_condition": "(`portal`.`q_categories`.`parent_id` in (439,443,454,460,476,479,587))",
"cost_info": {
"read_cost": "20.21",
"eval_cost": "2.20",
"prefix_cost": "22.41",
"data_read_per_join": "29K"
},
"used_columns": [
"category_id",
"parent_id"
]
}
}
}
category_id | parent_id |
---|---|
440 | 439 |
442 | 439 |
444 | 443 |
455 | 454 |
461 | 460 |
462 | 460 |
463 | 460 |
464 | 460 |
477 | 476 |
478 | 476 |