Query time 0.00124
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "2.58"
},
"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": "ref",
"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",
"ref": [
"const",
"const",
"const"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 1,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "1.00",
"eval_cost": "0.20",
"prefix_cost": "1.20",
"data_read_per_join": "792"
},
"used_columns": [
"feature_id",
"product_id",
"variant_id",
"lang_code"
]
}
},
{
"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": "1.00",
"eval_cost": "0.01",
"prefix_cost": "2.40",
"data_read_per_join": "58"
},
"used_columns": [
"variant_id",
"feature_id",
"position"
],
"attached_condition": "(`webmarco`.`cscart_product_feature_variants`.`feature_id` = 548)"
}
},
{
"table": {
"table_name": "cscart_product_features",
"access_type": "const",
"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"feature_id"
],
"key_length": "3",
"ref": [
"const"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 0,
"filtered": "100.00",
"cost_info": {
"read_cost": "0.05",
"eval_cost": "0.01",
"prefix_cost": "2.46",
"data_read_per_join": "22"
},
"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": "0.05",
"eval_cost": "0.01",
"prefix_cost": "2.52",
"data_read_per_join": "231"
},
"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": "0.05",
"eval_cost": "0.01",
"prefix_cost": "2.58",
"data_read_per_join": "86"
},
"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 |
One Size |
1465 |
548 |
1465 |
S |
|
|