{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "31.92"
},
"nested_loop": [
{
"table": {
"table_name": "b",
"access_type": "index",
"possible_keys": [
"PRIMARY",
"c_status"
],
"key": "c_status",
"used_key_parts": [
"destination_id",
"status"
],
"key_length": "6",
"rows_examined_per_scan": 21,
"rows_produced_per_join": 2,
"filtered": "10.00",
"using_index": true,
"cost_info": {
"read_cost": "5.88",
"eval_cost": "0.42",
"prefix_cost": "6.30",
"data_read_per_join": "1K"
},
"used_columns": [
"destination_id",
"status"
],
"attached_condition": "((`44mm_ru`.`b`.`status` = 'A') and (`44mm_ru`.`b`.`destination_id` is not null))"
}
},
{
"table": {
"table_name": "a",
"access_type": "ref",
"possible_keys": [
"c_status"
],
"key": "c_status",
"used_key_parts": [
"destination_id"
],
"key_length": "3",
"ref": [
"44mm_ru.b.destination_id"
],
"rows_examined_per_scan": 16,
"rows_produced_per_join": 33,
"filtered": "100.00",
"cost_info": {
"read_cost": "18.90",
"eval_cost": "6.72",
"prefix_cost": "31.92",
"data_read_per_join": "25K"
},
"used_columns": [
"element_id",
"destination_id",
"element",
"element_type"
]
}
}
]
}
}
element_id | destination_id | element | element_type |
---|---|---|---|
356 | 9 | RU | C |
358 | 10 | UA | C |
409 | 12 | Moscow* | T |
408 | 12 | Москва* | T |
451 | 13 | saint* | T |
450 | 13 | sankt* | T |
449 | 13 | санкт* | T |
448 | 13 | питер* | T |
447 | 13 | *петер* | T |
446 | 13 | RU | C |
452 | 13 | piter* | T |
523 | 101 | RU | C |
522 | 101 | 557 | S |
529 | 102 | RU | C |
528 | 102 | 544 | S |
535 | 103 | RU | C |
534 | 103 | 577 | S |
521 | 104 | RU | C |
520 | 104 | 583 | S |
533 | 105 | RU | C |
532 | 105 | 576 | S |
545 | 106 | RU | C |
544 | 106 | 594 | S |
543 | 107 | RU | C |
542 | 107 | 584 | S |
539 | 108 | RU | C |
538 | 108 | 546 | S |
540 | 109 | 582 | S |
541 | 109 | RU | C |
527 | 110 | RU | C |
526 | 110 | 561 | S |
547 | 111 | RU | C |
546 | 111 | 595 | S |
530 | 112 | 574 | S |
531 | 112 | RU | C |
525 | 113 | RU | C |
524 | 113 | 587 | S |
536 | 114 | 579 | S |
537 | 114 | RU | C |