Query time 0.00085
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "7.91"
},
"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": 6,
"rows_produced_per_join": 6,
"filtered": "100.00",
"index_condition": "(`cscartdb`.`gp`.`group_id` in (50,46,48,47))",
"cost_info": {
"read_cost": "3.11",
"eval_cost": "0.60",
"prefix_cost": "3.71",
"data_read_per_join": "96"
},
"used_columns": [
"product_id",
"group_id"
]
}
},
{
"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": [
"cscartdb.gp.group_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 6,
"filtered": "100.00",
"cost_info": {
"read_cost": "1.50",
"eval_cost": "0.60",
"prefix_cost": "5.81",
"data_read_per_join": "624"
},
"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": [
"cscartdb.gpf.feature_id",
"cscartdb.gp.product_id",
"const"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 6,
"filtered": "100.00",
"cost_info": {
"read_cost": "1.50",
"eval_cost": "0.60",
"prefix_cost": "7.91",
"data_read_per_join": "4K"
},
"used_columns": [
"feature_id",
"product_id",
"variant_id",
"lang_code"
]
}
}
]
}
}
Result
feature_id |
product_id |
variant_id |
group_id |
74 |
5608 |
296 |
46 |
74 |
5683 |
297 |
46 |
74 |
5610 |
296 |
47 |
74 |
5684 |
297 |
47 |
74 |
5685 |
297 |
48 |
74 |
5686 |
296 |
48 |
74 |
5689 |
296 |
50 |
74 |
5690 |
297 |
50 |