{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "45.21"
},
"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": 23,
"rows_produced_per_join": 23,
"filtered": "100.00",
"index_condition": "(`portal`.`q_categories`.`parent_id` in (250,251,252,253,254,255,256,271,434,459,533,535,579))",
"cost_info": {
"read_cost": "40.61",
"eval_cost": "4.60",
"prefix_cost": "45.21",
"data_read_per_join": "60K"
},
"used_columns": [
"category_id",
"parent_id"
]
}
}
}
category_id | parent_id |
---|---|
496 | 250 |
497 | 250 |
498 | 250 |
499 | 250 |
500 | 251 |
501 | 251 |
502 | 251 |
503 | 251 |
504 | 251 |
505 | 251 |
489 | 253 |
532 | 253 |
506 | 254 |
507 | 254 |
508 | 254 |
509 | 254 |
436 | 255 |
435 | 434 |