{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "9.05"
},
"table": {
"table_name": "cscart_guest__compare",
"access_type": "ALL",
"rows_examined_per_scan": 88,
"rows_produced_per_join": 8,
"filtered": "10.00",
"cost_info": {
"read_cost": "8.17",
"eval_cost": "0.88",
"prefix_cost": "9.05",
"data_read_per_join": "140"
},
"used_columns": [
"guest_id",
"product_id"
],
"attached_condition": "(`dev2`.`cscart_guest__compare`.`guest_id` = 0)"
}
}
}