Query time 0.00199
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "34.26"
},
"nested_loop": [
{
"table": {
"table_name": "pfv",
"access_type": "range",
"possible_keys": [
"PRIMARY",
"fl",
"variant_id",
"lang_code",
"product_id",
"fpl",
"idx_product_feature_variant_id"
],
"key": "lang_code",
"used_key_parts": [
"lang_code",
"feature_id",
"product_id"
],
"key_length": "12",
"rows_examined_per_scan": 20,
"rows_produced_per_join": 20,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "5.06",
"eval_cost": "4.00",
"prefix_cost": "9.06",
"data_read_per_join": "15K"
},
"used_columns": [
"feature_id",
"product_id",
"variant_id",
"lang_code"
],
"attached_condition": "((`webmarco`.`pfv`.`feature_id` in (626,860)) and (`webmarco`.`pfv`.`product_id` in (431514,431515,431516,431517,431518,431519,431520,431521,431522,431523)) and (`webmarco`.`pfv`.`lang_code` = 'en'))"
}
},
{
"table": {
"table_name": "fv",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY",
"feature_id"
],
"key": "PRIMARY",
"used_key_parts": [
"variant_id"
],
"key_length": "3",
"ref": [
"webmarco.pfv.variant_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 1,
"filtered": "5.00",
"cost_info": {
"read_cost": "20.00",
"eval_cost": "0.20",
"prefix_cost": "33.06",
"data_read_per_join": "1K"
},
"used_columns": [
"variant_id",
"feature_id",
"position"
],
"attached_condition": "(`webmarco`.`fv`.`feature_id` = `webmarco`.`pfv`.`feature_id`)"
}
},
{
"table": {
"table_name": "fvd",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"variant_id",
"lang_code"
],
"key_length": "9",
"ref": [
"webmarco.pfv.variant_id",
"const"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 1,
"filtered": "100.00",
"cost_info": {
"read_cost": "1.00",
"eval_cost": "0.20",
"prefix_cost": "34.26",
"data_read_per_join": "4K"
},
"used_columns": [
"variant_id",
"variant",
"lang_code"
]
}
}
]
}
}
Result
feature_id |
product_id |
variant_id |
position |
variant |
626 |
431514 |
7165 |
7 |
8-9 Years |
626 |
431515 |
7168 |
10 |
11-12 Years |
626 |
431516 |
7168 |
10 |
11-12 Years |
626 |
431517 |
7168 |
10 |
11-12 Years |
626 |
431518 |
7169 |
11 |
12-13 Years |
626 |
431519 |
7169 |
11 |
12-13 Years |
626 |
431520 |
7169 |
11 |
12-13 Years |
626 |
431521 |
7170 |
12 |
13-14 Years |
626 |
431522 |
7170 |
12 |
13-14 Years |
626 |
431523 |
7170 |
12 |
13-14 Years |
860 |
431514 |
60615 |
0 |
Blue |
860 |
431515 |
60615 |
0 |
Blue |
860 |
431516 |
64546 |
0 |
Green -Black White |
860 |
431517 |
67701 |
0 |
Black - Orange |
860 |
431518 |
60615 |
0 |
Blue |
860 |
431519 |
64546 |
0 |
Green -Black White |
860 |
431520 |
67701 |
0 |
Black - Orange |
860 |
431521 |
60615 |
0 |
Blue |
860 |
431522 |
64546 |
0 |
Green -Black White |
860 |
431523 |
67701 |
0 |
Black - Orange |