{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "3.63"
},
"nested_loop": [
{
"table": {
"table_name": "ushop_statuses",
"access_type": "ALL",
"possible_keys": [
"PRIMARY"
],
"rows_examined_per_scan": 23,
"rows_produced_per_join": 2,
"filtered": "10.00",
"cost_info": {
"read_cost": "2.59",
"eval_cost": "0.23",
"prefix_cost": "2.82",
"data_read_per_join": "36"
},
"used_columns": [
"status_id",
"status",
"type"
],
"attached_condition": "(`marketplace`.`ushop_statuses`.`type` = 'O')"
}
},
{
"table": {
"table_name": "ushop_status_data",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY",
"inventory"
],
"key": "PRIMARY",
"used_key_parts": [
"status_id",
"param"
],
"key_length": "768",
"ref": [
"marketplace.ushop_statuses.status_id",
"const"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 0,
"filtered": "28.07",
"cost_info": {
"read_cost": "0.57",
"eval_cost": "0.06",
"prefix_cost": "3.63",
"data_read_per_join": "991"
},
"used_columns": [
"status_id",
"param",
"value"
],
"attached_condition": "(`marketplace`.`ushop_status_data`.`value` = 'Y')"
}
}
]
}
}
| status |
|---|
| P |
| C |