Query time 0.00151
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "11.80"
},
"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": "PRIMARY",
"used_key_parts": [
"feature_id",
"product_id"
],
"key_length": "6",
"rows_examined_per_scan": 20,
"rows_produced_per_join": 19,
"filtered": "99.99",
"using_index": true,
"cost_info": {
"read_cost": "2.45",
"eval_cost": "2.00",
"prefix_cost": "4.45",
"data_read_per_join": "15K"
},
"used_columns": [
"feature_id",
"product_id",
"variant_id",
"lang_code"
],
"attached_condition": "((`cscartdb`.`pfv`.`feature_id` in (180,291,1183,73)) and (`cscartdb`.`pfv`.`product_id` in (8622,16092,16088,7383,5632)) and (`cscartdb`.`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": [
"cscartdb.pfv.variant_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 0,
"filtered": "5.00",
"cost_info": {
"read_cost": "5.00",
"eval_cost": "0.10",
"prefix_cost": "11.45",
"data_read_per_join": "1K"
},
"used_columns": [
"variant_id",
"feature_id",
"position"
],
"attached_condition": "(`cscartdb`.`fv`.`feature_id` = `cscartdb`.`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": [
"cscartdb.pfv.variant_id",
"const"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 0,
"filtered": "100.00",
"cost_info": {
"read_cost": "0.25",
"eval_cost": "0.10",
"prefix_cost": "11.80",
"data_read_per_join": "3K"
},
"used_columns": [
"variant_id",
"variant",
"lang_code"
]
}
}
]
}
}
Result
feature_id |
product_id |
variant_id |
position |
variant |
73 |
5632 |
291 |
0 |
12" |
180 |
8622 |
742 |
0 |
Black |
291 |
16088 |
1292 |
0 |
Beige |
291 |
16092 |
1292 |
0 |
Beige |
1183 |
7383 |
4437 |
0 |
Nipple Nooses |