Query time 0.00039
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "1.80"
},
"ordering_operation": {
"using_filesort": true,
"nested_loop": [
{
"table": {
"table_name": "a",
"access_type": "ref",
"possible_keys": [
"PRIMARY",
"c_status"
],
"key": "c_status",
"used_key_parts": [
"product_id",
"status"
],
"key_length": "6",
"ref": [
"const",
"const"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 1,
"filtered": "100.00",
"cost_info": {
"read_cost": "0.25",
"eval_cost": "0.10",
"prefix_cost": "0.35",
"data_read_per_join": "2K"
},
"used_columns": [
"option_id",
"product_id",
"company_id",
"option_type",
"regexp",
"required",
"multiupload",
"allowed_extensions",
"max_file_size",
"missing_variants_handling",
"status",
"position",
"value"
]
}
},
{
"table": {
"table_name": "b",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"option_id",
"lang_code"
],
"key_length": "9",
"ref": [
"nuie_scalesta_net.a.option_id",
"const"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 1,
"filtered": "100.00",
"cost_info": {
"read_cost": "0.25",
"eval_cost": "0.10",
"prefix_cost": "0.70",
"data_read_per_join": "3K"
},
"used_columns": [
"option_id",
"lang_code",
"option_name",
"internal_option_name",
"option_text",
"description",
"comment",
"inner_hint",
"incorrect_message"
]
}
},
{
"table": {
"table_name": "c",
"access_type": "ref",
"possible_keys": [
"PRIMARY",
"product_id"
],
"key": "PRIMARY",
"used_key_parts": [
"option_id"
],
"key_length": "3",
"ref": [
"nuie_scalesta_net.a.option_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 1,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "1.00",
"eval_cost": "0.10",
"prefix_cost": "1.80",
"data_read_per_join": "8"
},
"used_columns": [
"option_id",
"product_id"
],
"attached_condition": "(`nuie_scalesta_net`.`c`.`product_id` in (85257,89242,83071,83072,83624,83625,90907,90908,90986,90987,85082,85168,85214,85260,83038,90874,90953,82622,85119,85122,86189,86212,86521,86797,90564,90570,90576,89073,83069,83622,90905,90984,85080,85166,85212,85258,86193,86194,86216,86217,86525,86526,86801,86802,84678,87304,87305,87316,87317,87328,87329,87340,87341,85120,87310,87311,87322,87323,87334,87335,87346,87347,84654,84655,89818,89819,89870,89871,89942,89943,91508,91509,83083,83084,83611,83612,86144,86145,86167,86168,86660,86661,86729,86730,90922,90923,91001,91002,87298,87299,87292,87293,84527,84528,84593,84594))"
}
}
]
}
}
}