Query time 0.00107
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "30.26"
},
"nested_loop": [
{
"table": {
"table_name": "gpf",
"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": 2,
"rows_produced_per_join": 2,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "1.41",
"eval_cost": "0.40",
"prefix_cost": "1.81",
"data_read_per_join": "208"
},
"used_columns": [
"feature_id",
"group_id"
],
"attached_condition": "(`webmarco`.`gpf`.`group_id` in (6387,6384))"
}
},
{
"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": [
"webmarco.gpf.group_id"
],
"rows_examined_per_scan": 9,
"rows_produced_per_join": 18,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "2.02",
"eval_cost": "3.78",
"prefix_cost": "7.61",
"data_read_per_join": "302"
},
"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": 18,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "18.88",
"eval_cost": "3.78",
"prefix_cost": "30.26",
"data_read_per_join": "14K"
},
"used_columns": [
"feature_id",
"product_id",
"variant_id",
"lang_code"
]
}
}
]
}
}
Result
feature_id |
product_id |
variant_id |
group_id |
897 |
230173 |
62572 |
6384 |
897 |
233756 |
62576 |
6384 |
897 |
233757 |
62577 |
6384 |
897 |
233758 |
62578 |
6384 |
897 |
233759 |
62579 |
6384 |
897 |
233760 |
62580 |
6384 |
897 |
230172 |
62572 |
6387 |
897 |
233761 |
62576 |
6387 |
897 |
233762 |
62577 |
6387 |
897 |
233763 |
62578 |
6387 |
897 |
233764 |
62579 |
6387 |
897 |
233765 |
62580 |
6387 |
897 |
233766 |
62581 |
6387 |
897 |
233767 |
62582 |
6387 |
897 |
233768 |
62583 |
6387 |