Query time 0.00099
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "31.48"
},
"nested_loop": [
{
"table": {
"table_name": "gp",
"access_type": "range",
"possible_keys": [
"PRIMARY",
"idx_group_id"
],
"key": "idx_group_id",
"used_key_parts": [
"group_id"
],
"key_length": "3",
"rows_examined_per_scan": 9,
"rows_produced_per_join": 9,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "2.82",
"eval_cost": "1.80",
"prefix_cost": "4.62",
"data_read_per_join": "144"
},
"used_columns": [
"product_id",
"group_id"
],
"attached_condition": "(`webmarco`.`gp`.`group_id` in (2139,2137,1080))"
}
},
{
"table": {
"table_name": "gpf",
"access_type": "ref",
"possible_keys": [
"PRIMARY",
"idx_group_id"
],
"key": "idx_group_id",
"used_key_parts": [
"group_id"
],
"key_length": "3",
"ref": [
"webmarco.gp.group_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 12,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "9.00",
"eval_cost": "2.55",
"prefix_cost": "16.17",
"data_read_per_join": "1K"
},
"used_columns": [
"feature_id",
"group_id"
]
}
},
{
"table": {
"table_name": "pfv",
"access_type": "ref",
"possible_keys": [
"PRIMARY",
"fl",
"lang_code",
"product_id",
"fpl",
"idx_product_feature_variant_id"
],
"key": "fpl",
"used_key_parts": [
"feature_id",
"product_id",
"lang_code"
],
"key_length": "12",
"ref": [
"webmarco.gpf.feature_id",
"webmarco.gp.product_id",
"const"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 12,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "12.75",
"eval_cost": "2.55",
"prefix_cost": "31.48",
"data_read_per_join": "9K"
},
"used_columns": [
"feature_id",
"product_id",
"variant_id",
"lang_code"
]
}
}
]
}
}
Result
feature_id |
product_id |
variant_id |
group_id |
549 |
81668 |
1199 |
1080 |
549 |
81672 |
1516 |
1080 |
549 |
81675 |
1515 |
1080 |
548 |
152065 |
1195 |
2137 |
549 |
152065 |
1199 |
2137 |
548 |
152066 |
1194 |
2137 |
549 |
152066 |
1199 |
2137 |
548 |
152076 |
1193 |
2139 |
549 |
152076 |
1200 |
2139 |
548 |
152077 |
1195 |
2139 |
549 |
152077 |
1200 |
2139 |
548 |
152078 |
1194 |
2139 |
549 |
152078 |
1200 |
2139 |
548 |
152079 |
1197 |
2139 |
549 |
152079 |
1200 |
2139 |