Query time 0.00079
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "61.76"
},
"ordering_operation": {
"using_temporary_table": true,
"using_filesort": true,
"cost_info": {
"sort_cost": "7.36"
},
"nested_loop": [
{
"table": {
"table_name": "c",
"access_type": "index",
"possible_keys": [
"PRIMARY",
"product_id"
],
"key": "PRIMARY",
"used_key_parts": [
"option_id",
"product_id"
],
"key_length": "6",
"rows_examined_per_scan": 34,
"rows_produced_per_join": 30,
"filtered": "88.24",
"using_index": true,
"cost_info": {
"read_cost": "3.57",
"eval_cost": "6.00",
"prefix_cost": "9.57",
"data_read_per_join": "240"
},
"used_columns": [
"option_id",
"product_id"
],
"attached_condition": "((`portal`.`c`.`product_id` in (2251,2252,2253,2254,2255,2256,2257,2258,2259,2260,2261,2221,675,676,677,678,679,680,681,682,683,684,685,686,687,688,689,690,654,655)) and (`portal`.`c`.`option_id` is not null))"
}
},
{
"table": {
"table_name": "a",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY",
"c_status"
],
"key": "PRIMARY",
"used_key_parts": [
"option_id"
],
"key_length": "3",
"ref": [
"portal.c.option_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 7,
"filtered": "24.53",
"cost_info": {
"read_cost": "30.00",
"eval_cost": "1.47",
"prefix_cost": "45.57",
"data_read_per_join": "16K"
},
"used_columns": [
"option_id",
"product_id",
"company_id",
"option_type",
"inventory",
"regexp",
"required",
"multiupload",
"allowed_extensions",
"max_file_size",
"missing_variants_handling",
"status",
"position",
"value"
],
"attached_condition": "((`portal`.`a`.`product_id` = 0) and (`portal`.`a`.`status` = 'A'))"
}
},
{
"table": {
"table_name": "b",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"option_id",
"lang_code"
],
"key_length": "9",
"ref": [
"portal.c.option_id",
"const"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 7,
"filtered": "100.00",
"cost_info": {
"read_cost": "7.36",
"eval_cost": "1.47",
"prefix_cost": "54.40",
"data_read_per_join": "25K"
},
"used_columns": [
"option_id",
"lang_code",
"option_name",
"internal_option_name",
"option_text",
"description",
"comment",
"inner_hint",
"incorrect_message"
]
}
}
]
}
}
}