Query time 0.00089
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "28.09"
},
"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": 8,
"rows_produced_per_join": 8,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "2.62",
"eval_cost": "1.60",
"prefix_cost": "4.22",
"data_read_per_join": "128"
},
"used_columns": [
"product_id",
"group_id"
],
"attached_condition": "(`webmarco`.`gp`.`group_id` in (2138,2140))"
}
},
{
"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": 11,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "8.00",
"eval_cost": "2.27",
"prefix_cost": "14.49",
"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": 11,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "11.34",
"eval_cost": "2.27",
"prefix_cost": "28.09",
"data_read_per_join": "8K"
},
"used_columns": [
"feature_id",
"product_id",
"variant_id",
"lang_code"
]
}
}
]
}
}
Result
feature_id |
product_id |
variant_id |
group_id |
548 |
152072 |
8172 |
2138 |
549 |
152072 |
1199 |
2138 |
548 |
152073 |
10781 |
2138 |
549 |
152073 |
1199 |
2138 |
548 |
152074 |
8173 |
2138 |
549 |
152074 |
1199 |
2138 |
548 |
152075 |
8220 |
2138 |
549 |
152075 |
1199 |
2138 |
548 |
152081 |
1193 |
2140 |
549 |
152081 |
1199 |
2140 |
548 |
152082 |
1195 |
2140 |
549 |
152082 |
1199 |
2140 |
548 |
152083 |
1194 |
2140 |
549 |
152083 |
1199 |
2140 |
548 |
152084 |
1197 |
2140 |
549 |
152084 |
1199 |
2140 |