Query time 0.00104
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "6.62"
},
"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": 7,
"rows_produced_per_join": 7,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "1.02",
"eval_cost": "0.70",
"prefix_cost": "1.72",
"data_read_per_join": "5K"
},
"used_columns": [
"feature_id",
"product_id",
"variant_id"
],
"attached_condition": "((`cscartdb`.`v`.`feature_id` = 289) and (`cscartdb`.`v`.`product_id` in ('26856','26857','26855','26854','26853','26852','16040')))"
}
},
{
"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": 7,
"filtered": "100.00",
"cost_info": {
"read_cost": "1.75",
"eval_cost": "0.70",
"prefix_cost": "4.17",
"data_read_per_join": "21K"
},
"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": 7,
"filtered": "100.00",
"cost_info": {
"read_cost": "1.75",
"eval_cost": "0.70",
"prefix_cost": "6.62",
"data_read_per_join": "7K"
},
"used_columns": [
"variant_id",
"color",
"position"
]
}
}
]
}
}
Result
variant_id |
product_id |
variant |
position |
color |
1264 |
16040 |
S |
1 |
#ffffff |
1265 |
26852 |
M |
2 |
#ffffff |
1266 |
26853 |
L |
0 |
#ffffff |
1267 |
26854 |
XL |
3 |
#ffffff |
1268 |
26855 |
2XL |
4 |
#ffffff |
1269 |
26856 |
3XL |
5 |
#ffffff |
1270 |
26857 |
4XL |
6 |
#ffffff |