{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "1494.60"
},
"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": "5K"
},
"used_columns": [
"category_id",
"id_path"
]
}
},
{
"table": {
"table_name": "a",
"access_type": "index",
"key": "id_path",
"used_key_parts": [
"id_path"
],
"key_length": "767",
"rows_examined_per_scan": 6988,
"rows_produced_per_join": 776,
"filtered": "11.11",
"using_index": true,
"cost_info": {
"read_cost": "97.00",
"eval_cost": "155.27",
"prefix_cost": "1494.60",
"data_read_per_join": "4M"
},
"used_columns": [
"category_id",
"id_path"
],
"attached_condition": "(`webmarco`.`a`.`id_path` like <cache>(concat('9697/9698','/%')))"
}
}
]
}
}
category_id |
---|
9699 |
9700 |
9702 |
9704 |
9705 |
9706 |
9707 |
9708 |
9710 |
9711 |
9713 |