{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "134.53"
},
"nested_loop": [
{
"table": {
"table_name": "b",
"access_type": "const",
"possible_keys": [
"PRIMARY",
"p_category_id"
],
"key": "PRIMARY",
"used_key_parts": [
"category_id"
],
"key_length": "3",
"ref": [
"const"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 1,
"filtered": "100.00",
"cost_info": {
"read_cost": "0.00",
"eval_cost": "0.20",
"prefix_cost": "0.00",
"data_read_per_join": "2K"
},
"used_columns": [
"category_id",
"id_path"
]
}
},
{
"table": {
"table_name": "a",
"access_type": "ALL",
"rows_examined_per_scan": 598,
"rows_produced_per_join": 66,
"filtered": "11.11",
"cost_info": {
"read_cost": "14.93",
"eval_cost": "13.29",
"prefix_cost": "134.53",
"data_read_per_join": "175K"
},
"used_columns": [
"category_id",
"id_path"
],
"attached_condition": "(`portal`.`a`.`id_path` like <cache>(concat('248/249','/%')))"
}
}
]
}
}
category_id |
---|
250 |
435 |
436 |
490 |
496 |
500 |
506 |
251 |
492 |
497 |
501 |
507 |
252 |
498 |
502 |
508 |
253 |
499 |
503 |
509 |
254 |
489 |
504 |
255 |
505 |
532 |
256 |
271 |
433 |
434 |
459 |
484 |
533 |
535 |
579 |
595 |