Query time 0.00259
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "47.56"
},
"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": 28,
"rows_produced_per_join": 28,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "6.68",
"eval_cost": "5.60",
"prefix_cost": "12.28",
"data_read_per_join": "21K"
},
"used_columns": [
"feature_id",
"product_id",
"variant_id",
"lang_code"
],
"attached_condition": "((`webmarco`.`pfv`.`feature_id` in (922,925,953,880)) and (`webmarco`.`pfv`.`product_id` in (269816,270028,269815,269817,269818,269814,269830)) 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": "28.00",
"eval_cost": "0.28",
"prefix_cost": "45.88",
"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": "1.40",
"eval_cost": "0.28",
"prefix_cost": "47.56",
"data_read_per_join": "6K"
},
"used_columns": [
"variant_id",
"variant",
"lang_code"
]
}
}
]
}
}
Result
feature_id |
product_id |
variant_id |
position |
variant |
880 |
269817 |
60248 |
0 |
Herbs |
880 |
269818 |
62211 |
0 |
Grape |
922 |
269814 |
64114 |
0 |
5cl |
922 |
269815 |
64114 |
0 |
5cl |
922 |
269816 |
64114 |
0 |
5cl |
922 |
269817 |
64114 |
0 |
5cl |
922 |
269818 |
64114 |
0 |
5cl |
922 |
269830 |
64114 |
0 |
5cl |
925 |
269814 |
62784 |
0 |
Original |
925 |
269815 |
62784 |
0 |
Original |
925 |
269816 |
62784 |
0 |
Original |
925 |
269817 |
62784 |
0 |
Original |
925 |
269818 |
62784 |
0 |
Original |
925 |
269830 |
62784 |
0 |
Original |
925 |
270028 |
62784 |
0 |
Original |
953 |
270028 |
64121 |
3 |
5cl. |