{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "55.61"
},
"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": 34,
"rows_produced_per_join": 34,
"filtered": "100.00",
"index_condition": "(`portal`.`q_categories`.`parent_id` in (257,273,278,302,361,393,544,598))",
"cost_info": {
"read_cost": "48.81",
"eval_cost": "6.80",
"prefix_cost": "55.61",
"data_read_per_join": "89K"
},
"used_columns": [
"category_id",
"parent_id"
]
}
}
}
category_id | parent_id |
---|---|
258 | 257 |
264 | 257 |
510 | 257 |
511 | 257 |
274 | 273 |
275 | 273 |
276 | 273 |
277 | 273 |
279 | 278 |
284 | 278 |
288 | 278 |
289 | 278 |
290 | 278 |
291 | 278 |
303 | 302 |
330 | 302 |
362 | 361 |
363 | 361 |
364 | 361 |
365 | 361 |
391 | 361 |
392 | 361 |
545 | 544 |
546 | 544 |
547 | 544 |
548 | 544 |