Query time 0.00071
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "7.46"
},
"nested_loop": [
{
"table": {
"table_name": "P",
"access_type": "const",
"possible_keys": [
"PRIMARY",
"cscart_products_product_id_index"
],
"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": "0.00",
"eval_cost": "0.10",
"prefix_cost": "0.00",
"data_read_per_join": "7K"
},
"used_columns": [
"product_id"
]
}
},
{
"table": {
"table_name": "PFV",
"access_type": "ref",
"possible_keys": [
"PRIMARY",
"fl",
"variant_id",
"product_id",
"fpl",
"idx_product_feature_variant_id"
],
"key": "product_id",
"used_key_parts": [
"product_id"
],
"key_length": "3",
"ref": [
"const"
],
"rows_examined_per_scan": 5,
"rows_produced_per_join": 5,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "0.51",
"eval_cost": "0.50",
"prefix_cost": "1.01",
"data_read_per_join": "3K"
},
"used_columns": [
"feature_id",
"product_id",
"variant_id"
],
"attached_condition": "(`dev2`.`PFV`.`product_id` = '14253')"
}
},
{
"table": {
"table_name": "PF",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY",
"status"
],
"key": "PRIMARY",
"used_key_parts": [
"feature_id"
],
"key_length": "3",
"ref": [
"dev2.PFV.feature_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 4,
"filtered": "80.46",
"cost_info": {
"read_cost": "1.25",
"eval_cost": "0.40",
"prefix_cost": "2.76",
"data_read_per_join": "6K"
},
"used_columns": [
"feature_id",
"status"
],
"attached_condition": "(`dev2`.`PF`.`status` = 'A')"
}
},
{
"table": {
"table_name": "PFVS",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"variant_id"
],
"key_length": "3",
"ref": [
"dev2.PFV.variant_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 4,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "1.47",
"eval_cost": "0.40",
"prefix_cost": "4.64",
"data_read_per_join": "6K"
},
"used_columns": [
"variant_id"
]
}
},
{
"table": {
"table_name": "PFVD",
"access_type": "ref",
"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"variant_id"
],
"key_length": "3",
"ref": [
"dev2.PFV.variant_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 4,
"filtered": "100.00",
"cost_info": {
"read_cost": "1.01",
"eval_cost": "0.40",
"prefix_cost": "6.04",
"data_read_per_join": "17K"
},
"used_columns": [
"variant_id",
"variant"
]
}
},
{
"table": {
"table_name": "PFD",
"access_type": "ref",
"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"feature_id"
],
"key_length": "3",
"ref": [
"dev2.PFV.feature_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 4,
"filtered": "100.00",
"cost_info": {
"read_cost": "1.01",
"eval_cost": "0.41",
"prefix_cost": "7.46",
"data_read_per_join": "11K"
},
"used_columns": [
"feature_id",
"internal_name"
]
}
}
]
}
}
Result
product_id |
name |
variant |
variant_id |
feature_id |
14253 |
Мощность двигателя, л.с. |
273 |
8764 |
737 |
14253 |
Шины |
425/85 R21 |
9218 |
745 |
14253 |
Объем топливного бака, л. |
300 |
9494 |
746 |
14253 |
Максимальная скорость, км/ч |
85 |
9137 |
748 |
14253 |
Количество мест в автобусе |
22 |
13583 |
750 |