Query time 0.00080
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "4.80"
},
"nested_loop": [
{
"table": {
"table_name": "v",
"access_type": "range",
"possible_keys": [
"PRIMARY",
"fl",
"product_id",
"fpl",
"idx_product_feature_variant_id"
],
"key": "PRIMARY",
"used_key_parts": [
"feature_id",
"product_id"
],
"key_length": "6",
"rows_examined_per_scan": 5,
"rows_produced_per_join": 5,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "0.80",
"eval_cost": "0.50",
"prefix_cost": "1.30",
"data_read_per_join": "3K"
},
"used_columns": [
"feature_id",
"product_id",
"variant_id"
],
"attached_condition": "((`cscartdb`.`v`.`feature_id` = 1307) and (`cscartdb`.`v`.`product_id` in ('37529','37752','37751','37750','37749')))"
}
},
{
"table": {
"table_name": "vd",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"variant_id",
"lang_code"
],
"key_length": "9",
"ref": [
"cscartdb.v.variant_id",
"const"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 5,
"filtered": "100.00",
"cost_info": {
"read_cost": "1.25",
"eval_cost": "0.50",
"prefix_cost": "3.05",
"data_read_per_join": "15K"
},
"used_columns": [
"variant_id",
"variant",
"lang_code"
]
}
},
{
"table": {
"table_name": "vf",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"variant_id"
],
"key_length": "3",
"ref": [
"cscartdb.v.variant_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 5,
"filtered": "100.00",
"cost_info": {
"read_cost": "1.25",
"eval_cost": "0.50",
"prefix_cost": "4.80",
"data_read_per_join": "5K"
},
"used_columns": [
"variant_id",
"color",
"position"
]
}
}
]
}
}
Result
variant_id |
product_id |
variant |
position |
color |
5152 |
37529 |
A4 |
0 |
#000000 |
5153 |
37749 |
A3 |
1 |
#000000 |
5154 |
37750 |
16"x24" |
2 |
#000000 |
5155 |
37751 |
24"x30" |
3 |
#000000 |
5156 |
37752 |
30"x45" |
4 |
#000000 |