Query time 0.00170
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "92.81"
},
"ordering_operation": {
"using_filesort": true,
"cost_info": {
"sort_cost": "16.00"
},
"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": 16,
"rows_produced_per_join": 16,
"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 ('8394','8395','8396','8397','8398','8399','8400','8401','8402','8403','8404','8405','8406','8407','8408','8409')))",
"cost_info": {
"read_cost": "35.21",
"eval_cost": "3.20",
"prefix_cost": "38.41",
"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": 16,
"filtered": "100.00",
"cost_info": {
"read_cost": "16.00",
"eval_cost": "3.20",
"prefix_cost": "57.61",
"data_read_per_join": "12K"
},
"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": 16,
"filtered": "100.00",
"cost_info": {
"read_cost": "16.00",
"eval_cost": "3.20",
"prefix_cost": "76.81",
"data_read_per_join": "9K"
},
"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 |
|
|
|
|
17720 |
8394 |
product |
19682 |
M |
0 |
|
|
0 |
|
|
|
|
17723 |
8395 |
product |
19685 |
M |
0 |
|
|
0 |
|
|
|
|
17726 |
8396 |
product |
19688 |
M |
0 |
|
|
0 |
|
|
|
|
17728 |
8397 |
product |
19690 |
M |
0 |
|
|
0 |
|
|
|
|
17731 |
8398 |
product |
19693 |
M |
0 |
|
|
0 |
|
|
|
|
17734 |
8399 |
product |
19696 |
M |
0 |
|
|
0 |
|
|
|
|
17737 |
8400 |
product |
19699 |
M |
0 |
|
|
0 |
|
|
|
|
17740 |
8401 |
product |
19702 |
M |
0 |
|
|
0 |
|
|
|
|
17743 |
8402 |
product |
19705 |
M |
0 |
|
|
0 |
|
|
|
|
17755 |
8403 |
product |
19717 |
M |
0 |
|
|
0 |
|
|
|
|
17758 |
8404 |
product |
19720 |
M |
0 |
|
|
0 |
|
|
|
|
17761 |
8405 |
product |
19723 |
M |
0 |
|
|
0 |
|
|
|
|
17764 |
8406 |
product |
19726 |
M |
0 |
|
|
0 |
|
|
|
|
17767 |
8407 |
product |
19729 |
M |
0 |
|
|
0 |
|
|
|
|
17770 |
8408 |
product |
19732 |
M |
0 |
|
|
0 |
|
|
|
|
17773 |
8409 |
product |
19735 |
M |
0 |
|
|