{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "4.19"
},
"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": 6,
"rows_produced_per_join": 1,
"filtered": "16.67",
"using_index": true,
"cost_info": {
"read_cost": "1.01",
"eval_cost": "0.10",
"prefix_cost": "1.11",
"data_read_per_join": "776"
},
"used_columns": [
"destination_id",
"status"
],
"attached_condition": "((`softwarepirmam_hewadelivard_cscart_4`.`b`.`status` = 'A') and (`softwarepirmam_hewadelivard_cscart_4`.`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": [
"softwarepirmam_hewadelivard_cscart_4.b.destination_id"
],
"rows_examined_per_scan": 12,
"rows_produced_per_join": 12,
"filtered": "100.00",
"cost_info": {
"read_cost": "1.86",
"eval_cost": "1.23",
"prefix_cost": "4.19",
"data_read_per_join": "9K"
},
"used_columns": [
"element_id",
"destination_id",
"element",
"element_type"
]
}
}
]
}
}
| element_id | destination_id | element | element_type |
|---|---|---|---|
| 445 | 9 | IQ | C |
| 444 | 9 | 865 | S |
| 464 | 10 | IQ | C |
| 463 | 10 | 868 | S |
| 462 | 10 | 874 | S |
| 461 | 10 | 863 | S |
| 460 | 11 | IQ | C |
| 459 | 11 | 857 | S |
| 458 | 11 | 859 | S |
| 457 | 11 | 858 | S |
| 456 | 11 | 860 | S |
| 455 | 11 | 862 | S |
| 454 | 11 | 864 | S |
| 453 | 11 | 861 | S |
| 452 | 11 | 867 | S |
| 451 | 11 | 870 | S |
| 450 | 11 | 869 | S |
| 449 | 11 | 871 | S |
| 448 | 11 | 872 | S |
| 447 | 11 | 873 | S |
| 446 | 11 | 875 | S |