Query time 0.00055
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "30.22"
},
"nested_loop": [
{
"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": [
"const"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 1,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "1.00",
"eval_cost": "0.20",
"prefix_cost": "1.20",
"data_read_per_join": "104"
},
"used_columns": [
"feature_id",
"group_id"
]
}
},
{
"table": {
"table_name": "gp",
"access_type": "ref",
"possible_keys": [
"PRIMARY",
"idx_group_id"
],
"key": "idx_group_id",
"used_key_parts": [
"group_id"
],
"key_length": "3",
"ref": [
"const"
],
"rows_examined_per_scan": 20,
"rows_produced_per_join": 20,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "1.02",
"eval_cost": "4.00",
"prefix_cost": "6.22",
"data_read_per_join": "320"
},
"used_columns": [
"product_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": 20,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "20.00",
"eval_cost": "4.00",
"prefix_cost": "30.22",
"data_read_per_join": "15K"
},
"used_columns": [
"feature_id",
"product_id",
"variant_id",
"lang_code"
]
}
}
]
}
}
Result
feature_id |
product_id |
variant_id |
group_id |
1004 |
279387 |
64478 |
7147 |
1004 |
279389 |
64484 |
7147 |
1004 |
279390 |
64485 |
7147 |
1004 |
279391 |
64486 |
7147 |
1004 |
279392 |
64487 |
7147 |
1004 |
279393 |
64488 |
7147 |
1004 |
279394 |
64489 |
7147 |
1004 |
279395 |
64490 |
7147 |
1004 |
279396 |
64491 |
7147 |
1004 |
279397 |
64492 |
7147 |
1004 |
279398 |
64493 |
7147 |
1004 |
279399 |
64494 |
7147 |
1004 |
279400 |
64495 |
7147 |
1004 |
279401 |
64496 |
7147 |
1004 |
279402 |
64497 |
7147 |
1004 |
279403 |
64479 |
7147 |
1004 |
279404 |
64480 |
7147 |
1004 |
279405 |
64481 |
7147 |
1004 |
279406 |
64482 |
7147 |
1004 |
279407 |
64483 |
7147 |