Query time 0.00051
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "53.01"
},
"ordering_operation": {
"using_filesort": true,
"cost_info": {
"sort_cost": "10.00"
},
"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": 10,
"rows_produced_per_join": 10,
"filtered": "100.00",
"index_condition": "((`portal`.`q_images_links`.`object_type` = 'feature_variant') and (`portal`.`q_images_links`.`type` = 'V') and (`portal`.`q_images_links`.`object_id` in ('229','229','229','229','242','229','237','229','243','241','229','229','229','229')))",
"cost_info": {
"read_cost": "17.01",
"eval_cost": "2.00",
"prefix_cost": "19.01",
"data_read_per_join": "960"
},
"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.detailed_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 10,
"filtered": "100.00",
"cost_info": {
"read_cost": "10.00",
"eval_cost": "2.00",
"prefix_cost": "31.01",
"data_read_per_join": "7K"
},
"used_columns": [
"image_id",
"image_path",
"image_x",
"image_y",
"is_high_res"
],
"attached_condition": "<if>(is_not_null_compl(q_images), (`portal`.`q_images_links`.`detailed_id` = `portal`.`q_images`.`image_id`), true)"
}
},
{
"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": 10,
"filtered": "100.00",
"cost_info": {
"read_cost": "10.00",
"eval_cost": "2.00",
"prefix_cost": "43.01",
"data_read_per_join": "5K"
},
"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 |
5165 |
|
|
|
|
3189 |
229 |
feature_variant |
0 |
V |
0 |
|
|
5440 |
|
|
|
|
3466 |
237 |
feature_variant |
0 |
V |
0 |
|
|
5469 |
|
|
|
|
3495 |
241 |
feature_variant |
0 |
V |
0 |
|
|
5615 |
|
|
|
|
3641 |
242 |
feature_variant |
0 |
V |
0 |
|
|
5616 |
|
|
|
|
3642 |
243 |
feature_variant |
0 |
V |
0 |
|
|