Query time 0.00100
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "25.82"
},
"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": 2,
"rows_produced_per_join": 2,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "1.00",
"eval_cost": "0.40",
"prefix_cost": "1.40",
"data_read_per_join": "208"
},
"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": 8,
"rows_produced_per_join": 16,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "2.02",
"eval_cost": "3.20",
"prefix_cost": "6.62",
"data_read_per_join": "256"
},
"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": 16,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "16.00",
"eval_cost": "3.20",
"prefix_cost": "25.82",
"data_read_per_join": "12K"
},
"used_columns": [
"feature_id",
"product_id",
"variant_id",
"lang_code"
]
}
}
]
}
}
Result
feature_id |
product_id |
variant_id |
group_id |
860 |
432333 |
67794 |
10745 |
860 |
432346 |
65265 |
10745 |
860 |
432347 |
65265 |
10745 |
860 |
432348 |
65265 |
10745 |
860 |
432349 |
65265 |
10745 |
860 |
432350 |
67794 |
10745 |
860 |
432351 |
67794 |
10745 |
860 |
432352 |
67794 |
10745 |
1013 |
432333 |
64557 |
10745 |
1013 |
432346 |
64557 |
10745 |
1013 |
432347 |
64558 |
10745 |
1013 |
432348 |
64559 |
10745 |
1013 |
432349 |
64560 |
10745 |
1013 |
432350 |
64558 |
10745 |
1013 |
432351 |
64559 |
10745 |
1013 |
432352 |
64560 |
10745 |