{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "7.01"
},
"table": {
"table_name": "cscart_categories",
"access_type": "range",
"possible_keys": [
"PRIMARY",
"parent",
"p_category_id"
],
"key": "parent",
"used_key_parts": [
"parent_id"
],
"key_length": "3",
"rows_examined_per_scan": 10,
"rows_produced_per_join": 10,
"filtered": "100.00",
"index_condition": "(`s2cart`.`cscart_categories`.`parent_id` in (1316,1317,1315,1318,1320,1319,1322,1321,1323,1324))",
"cost_info": {
"read_cost": "6.01",
"eval_cost": "1.00",
"prefix_cost": "7.01",
"data_read_per_join": "35K"
},
"used_columns": [
"category_id",
"parent_id"
],
"attached_condition": "(`s2cart`.`cscart_categories`.`category_id` <> 414)"
}
}
}