Query time 0.00136
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "8.14"
},
"ordering_operation": {
"using_filesort": true,
"grouping_operation": {
"using_temporary_table": true,
"using_filesort": false,
"nested_loop": [
{
"table": {
"table_name": "cscart_product_features_values",
"access_type": "range",
"possible_keys": [
"PRIMARY",
"fl",
"variant_id",
"lang_code",
"product_id",
"fpl",
"idx_product_feature_variant_id"
],
"key": "lang_code",
"used_key_parts": [
"lang_code",
"feature_id",
"product_id"
],
"key_length": "12",
"rows_examined_per_scan": 4,
"rows_produced_per_join": 4,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "1.82",
"eval_cost": "0.80",
"prefix_cost": "2.62",
"data_read_per_join": "3K"
},
"used_columns": [
"feature_id",
"product_id",
"variant_id",
"lang_code"
],
"attached_condition": "((`webmarco`.`cscart_product_features_values`.`product_id` = 151100) and (`webmarco`.`cscart_product_features_values`.`feature_id` in (741,835,834,845)) and (`webmarco`.`cscart_product_features_values`.`lang_code` = 'en'))"
}
},
{
"table": {
"table_name": "cscart_product_feature_variants",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY",
"feature_id",
"position"
],
"key": "PRIMARY",
"used_key_parts": [
"variant_id"
],
"key_length": "3",
"ref": [
"webmarco.cscart_product_features_values.variant_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 0,
"filtered": "5.00",
"cost_info": {
"read_cost": "4.00",
"eval_cost": "0.04",
"prefix_cost": "7.42",
"data_read_per_join": "233"
},
"used_columns": [
"variant_id",
"feature_id",
"position"
],
"attached_condition": "(`webmarco`.`cscart_product_feature_variants`.`feature_id` = `webmarco`.`cscart_product_features_values`.`feature_id`)"
}
},
{
"table": {
"table_name": "cscart_product_features",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"feature_id"
],
"key_length": "3",
"ref": [
"webmarco.cscart_product_features_values.feature_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 0,
"filtered": "100.00",
"cost_info": {
"read_cost": "0.20",
"eval_cost": "0.04",
"prefix_cost": "7.66",
"data_read_per_join": "88"
},
"used_columns": [
"feature_id",
"feature_type"
]
}
},
{
"table": {
"table_name": "cscart_product_feature_variant_descriptions",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"variant_id",
"lang_code"
],
"key_length": "9",
"ref": [
"webmarco.cscart_product_features_values.variant_id",
"const"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 0,
"filtered": "100.00",
"cost_info": {
"read_cost": "0.20",
"eval_cost": "0.04",
"prefix_cost": "7.90",
"data_read_per_join": "924"
},
"used_columns": [
"variant_id",
"variant",
"lang_code"
]
}
},
{
"table": {
"table_name": "cscart_seo_names",
"access_type": "ref",
"possible_keys": [
"PRIMARY",
"dispatch"
],
"key": "PRIMARY",
"used_key_parts": [
"object_id",
"type",
"dispatch",
"lang_code"
],
"key_length": "206",
"ref": [
"webmarco.cscart_product_features_values.variant_id",
"const",
"const",
"const"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 0,
"filtered": "100.00",
"cost_info": {
"read_cost": "0.20",
"eval_cost": "0.04",
"prefix_cost": "8.14",
"data_read_per_join": "347"
},
"used_columns": [
"name",
"object_id",
"company_id",
"type",
"dispatch",
"path",
"lang_code"
]
}
}
]
}
}
}
}
Result
variant |
variant_id |
feature_id |
selected |
feature_type |
seo_name |
seo_path |
Italy |
59704 |
835 |
59704 |
M |
|
|
Brescia |
59871 |
845 |
59871 |
M |
|
|
Lombardia |
59749 |
834 |
59749 |
M |
|
|
Food Delivery |
38295 |
741 |
38295 |
M |
|
|