{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "1.41"
},
"table": {
"table_name": "cscart_categories",
"access_type": "range",
"possible_keys": [
"id_path"
],
"key": "id_path",
"used_key_parts": [
"id_path"
],
"key_length": "767",
"rows_examined_per_scan": 1,
"rows_produced_per_join": 1,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "1.21",
"eval_cost": "0.20",
"prefix_cost": "1.41",
"data_read_per_join": "5K"
},
"used_columns": [
"category_id",
"id_path"
],
"attached_condition": "(`webmarco`.`cscart_categories`.`id_path` like '2653/2658/2843/2884/%')"
}
}
}