{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "22.91"
},
"nested_loop": [
{
"table": {
"table_name": "a",
"access_type": "ALL",
"possible_keys": [
"c_status"
],
"rows_examined_per_scan": 49,
"rows_produced_per_join": 49,
"filtered": "100.00",
"cost_info": {
"read_cost": "0.86",
"eval_cost": "4.90",
"prefix_cost": "5.76",
"data_read_per_join": "37K"
},
"used_columns": [
"element_id",
"destination_id",
"element",
"element_type"
]
}
},
{
"table": {
"table_name": "b",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY",
"c_status"
],
"key": "PRIMARY",
"used_key_parts": [
"destination_id"
],
"key_length": "3",
"ref": [
"cscartdevel.a.destination_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 4,
"filtered": "10.00",
"cost_info": {
"read_cost": "12.25",
"eval_cost": "0.49",
"prefix_cost": "22.91",
"data_read_per_join": "3K"
},
"used_columns": [
"destination_id",
"status"
],
"attached_condition": "(`cscartdevel`.`b`.`status` = 'A')"
}
}
]
}
}
element_id | destination_id | element | element_type |
---|---|---|---|
497 | 58 | LV | C |
496 | 57 | IT | C |
495 | 56 | FO | C |
494 | 55 | AX | C |
493 | 54 | IM | C |
492 | 53 | GB | C |
491 | 52 | HU | C |
490 | 51 | UA | C |
489 | 50 | TR | C |
488 | 49 | SI | C |
487 | 48 | SK | C |
486 | 47 | SE | C |
485 | 46 | CH | C |
442 | 45 | CS | C |
441 | 44 | SM | C |
484 | 43 | RO | C |
483 | 42 | PT | C |
482 | 41 | NO | C |
481 | 40 | DE | C |
480 | 39 | MD | C |
479 | 38 | MC | C |
434 | 37 | MT | C |
478 | 36 | MK | C |
477 | 35 | LU | C |
476 | 34 | LT | C |
430 | 33 | LI | C |
475 | 32 | IS | C |
474 | 31 | IE | C |
473 | 30 | NL | C |
472 | 29 | ES | C |
471 | 28 | GE | C |
470 | 27 | GR | C |
423 | 26 | GI | C |
469 | 25 | FR | C |
468 | 24 | FI | C |
420 | 23 | EE | C |
467 | 22 | DK | C |
466 | 21 | CZ | C |
465 | 20 | ME | C |
464 | 19 | CY | C |
463 | 18 | HR | C |
462 | 17 | BG | C |
461 | 16 | BA | C |
460 | 15 | BY | C |
459 | 14 | BE | C |
410 | 13 | AT | C |
458 | 12 | AD | C |
408 | 11 | AL | C |
457 | 1 | PL | C |