Query time 0.00068
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 (9244,7607,7560))"
}
},
{
"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 |
860 |
309567 |
64475 |
7560 |
860 |
359772 |
64721 |
7607 |
626 |
396058 |
7166 |
9244 |
626 |
396059 |
67588 |
9244 |
626 |
396060 |
7168 |
9244 |
626 |
396061 |
7169 |
9244 |
626 |
396062 |
7170 |
9244 |
626 |
396063 |
7171 |
9244 |
626 |
396064 |
7167 |
9244 |