Query time 0.00117
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "116.81"
},
"ordering_operation": {
"using_filesort": true,
"cost_info": {
"sort_cost": "21.00"
},
"nested_loop": [
{
"table": {
"table_name": "q_images_links",
"access_type": "range",
"possible_keys": [
"object_id"
],
"key": "object_id",
"used_key_parts": [
"object_id",
"object_type",
"type"
],
"key_length": "81",
"rows_examined_per_scan": 21,
"rows_produced_per_join": 21,
"filtered": "100.00",
"index_condition": "((`portal`.`q_images_links`.`object_type` = 'product') and (`portal`.`q_images_links`.`type` = 'M') and (`portal`.`q_images_links`.`object_id` in ('14578','14579','14580','14581','14582','14583','14584','14585','14586','14587','14588','14589','14590','14591','14592','14593')))",
"cost_info": {
"read_cost": "41.21",
"eval_cost": "4.20",
"prefix_cost": "45.41",
"data_read_per_join": "1K"
},
"used_columns": [
"pair_id",
"object_id",
"object_type",
"image_id",
"detailed_id",
"type",
"position"
]
}
},
{
"table": {
"table_name": "q_images",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"image_id"
],
"key_length": "4",
"ref": [
"portal.q_images_links.image_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 21,
"filtered": "100.00",
"cost_info": {
"read_cost": "21.00",
"eval_cost": "4.20",
"prefix_cost": "70.61",
"data_read_per_join": "16K"
},
"used_columns": [
"image_id",
"image_path",
"image_x",
"image_y",
"is_high_res"
]
}
},
{
"table": {
"table_name": "q_common_descriptions",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"object_id",
"lang_code",
"object_holder"
],
"key_length": "107",
"ref": [
"portal.q_images.image_id",
"const",
"const"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 21,
"filtered": "100.00",
"cost_info": {
"read_cost": "21.00",
"eval_cost": "4.20",
"prefix_cost": "95.81",
"data_read_per_join": "12K"
},
"used_columns": [
"object_id",
"description",
"lang_code",
"object_holder"
],
"attached_condition": "<if>(is_not_null_compl(q_common_descriptions), (`portal`.`q_common_descriptions`.`object_id` = `portal`.`q_images`.`image_id`), true)"
}
}
]
}
}
}
Result
image_id |
image_path |
image_x |
image_y |
is_high_res |
pair_id |
object_id |
object_type |
detailed_id |
type |
position |
alt |
images_image_id |
0 |
|
|
|
|
28486 |
14578 |
product |
30448 |
M |
0 |
|
|
0 |
|
|
|
|
28487 |
14579 |
product |
30449 |
M |
0 |
|
|
0 |
|
|
|
|
28488 |
14580 |
product |
30450 |
M |
0 |
|
|
0 |
|
|
|
|
28489 |
14581 |
product |
30451 |
M |
0 |
|
|
0 |
|
|
|
|
28490 |
14582 |
product |
30452 |
M |
0 |
|
|
0 |
|
|
|
|
28491 |
14583 |
product |
30453 |
M |
0 |
|
|
0 |
|
|
|
|
28492 |
14584 |
product |
30454 |
M |
0 |
|
|
0 |
|
|
|
|
28493 |
14585 |
product |
30455 |
M |
0 |
|
|
0 |
|
|
|
|
28494 |
14586 |
product |
30456 |
M |
0 |
|
|
0 |
|
|
|
|
28495 |
14587 |
product |
30457 |
M |
0 |
|
|
0 |
|
|
|
|
28496 |
14588 |
product |
30458 |
M |
0 |
|
|
0 |
|
|
|
|
28497 |
14589 |
product |
30459 |
M |
0 |
|
|
0 |
|
|
|
|
28498 |
14590 |
product |
30460 |
M |
0 |
|
|
0 |
|
|
|
|
28499 |
14591 |
product |
30461 |
M |
0 |
|
|
0 |
|
|
|
|
28500 |
14592 |
product |
30462 |
M |
0 |
|
|
0 |
|
|
|
|
28501 |
14593 |
product |
30463 |
M |
0 |
|
|