{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "2.40"
},
"grouping_operation": {
"using_filesort": false,
"nested_loop": [
{
"table": {
"table_name": "req_prod",
"access_type": "ref",
"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"product_id"
],
"key_length": "3",
"ref": [
"const"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 1,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "1.00",
"eval_cost": "0.20",
"prefix_cost": "1.20",
"data_read_per_join": "8"
},
"used_columns": [
"product_id",
"required_id"
],
"attached_condition": "((`webmarco`.`req_prod`.`product_id` <=> 354688))"
}
},
{
"table": {
"table_name": "cscart_products",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY",
"status"
],
"key": "PRIMARY",
"used_key_parts": [
"product_id"
],
"key_length": "3",
"ref": [
"webmarco.req_prod.required_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 0,
"filtered": "50.79",
"cost_info": {
"read_cost": "1.00",
"eval_cost": "0.10",
"prefix_cost": "2.40",
"data_read_per_join": "3K"
},
"used_columns": [
"product_id",
"status"
],
"attached_condition": "(`webmarco`.`cscart_products`.`status` <> 'D')"
}
}
]
}
}
}