Query time 0.00091
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "5.71"
},
"nested_loop": [
{
"table": {
"table_name": "v",
"access_type": "range",
"possible_keys": [
"PRIMARY",
"fl",
"product_id",
"fpl",
"idx_product_feature_variant_id"
],
"key": "PRIMARY",
"used_key_parts": [
"feature_id",
"product_id"
],
"key_length": "6",
"rows_examined_per_scan": 6,
"rows_produced_per_join": 6,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "0.91",
"eval_cost": "0.60",
"prefix_cost": "1.51",
"data_read_per_join": "4K"
},
"used_columns": [
"feature_id",
"product_id",
"variant_id"
],
"attached_condition": "((`cscartdb`.`v`.`feature_id` = 247) and (`cscartdb`.`v`.`product_id` in ('13353','13400','13401','13402','13403','13404')))"
}
},
{
"table": {
"table_name": "vd",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"variant_id",
"lang_code"
],
"key_length": "9",
"ref": [
"cscartdb.v.variant_id",
"const"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 6,
"filtered": "100.00",
"cost_info": {
"read_cost": "1.50",
"eval_cost": "0.60",
"prefix_cost": "3.61",
"data_read_per_join": "18K"
},
"used_columns": [
"variant_id",
"variant",
"lang_code"
]
}
},
{
"table": {
"table_name": "vf",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"variant_id"
],
"key_length": "3",
"ref": [
"cscartdb.v.variant_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 6,
"filtered": "100.00",
"cost_info": {
"read_cost": "1.50",
"eval_cost": "0.60",
"prefix_cost": "5.71",
"data_read_per_join": "6K"
},
"used_columns": [
"variant_id",
"color",
"position"
]
}
}
]
}
}
Result
variant_id |
product_id |
variant |
position |
color |
1074 |
13353 |
1 |
0 |
|
1075 |
13400 |
2 |
1 |
|
1076 |
13401 |
3 |
2 |
|
1077 |
13402 |
4 |
3 |
|
1078 |
13403 |
5 |
4 |
|
1079 |
13404 |
6 |
5 |
|