Query time 0.00100
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "222.41"
},
"ordering_operation": {
"using_filesort": true,
"cost_info": {
"sort_cost": "43.00"
},
"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": 43,
"rows_produced_per_join": 43,
"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 ('29273','29280','29281','29301','29313','29368','29379','29695','29820','29831','29863','29865','29867','29868','29869','29873')))",
"cost_info": {
"read_cost": "67.61",
"eval_cost": "8.60",
"prefix_cost": "76.21",
"data_read_per_join": "4K"
},
"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": 43,
"filtered": "100.00",
"cost_info": {
"read_cost": "43.00",
"eval_cost": "8.60",
"prefix_cost": "127.81",
"data_read_per_join": "32K"
},
"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": 43,
"filtered": "100.00",
"cost_info": {
"read_cost": "43.00",
"eval_cost": "8.60",
"prefix_cost": "179.41",
"data_read_per_join": "25K"
},
"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 |
|
|
|
|
44318 |
29301 |
product |
46280 |
M |
0 |
|
|
0 |
|
|
|
|
44484 |
29281 |
product |
46446 |
M |
0 |
|
|
0 |
|
|
|
|
44501 |
29280 |
product |
46463 |
M |
0 |
|
|
0 |
|
|
|
|
44595 |
29273 |
product |
46557 |
M |
0 |
|
|
0 |
|
|
|
|
45161 |
29313 |
product |
47123 |
M |
0 |
|
|
0 |
|
|
|
|
45497 |
29379 |
product |
47459 |
M |
0 |
|
|
0 |
|
|
|
|
45604 |
29368 |
product |
47566 |
M |
0 |
|
|
0 |
|
|
|
|
45878 |
29695 |
product |
47840 |
M |
0 |
|
|
0 |
|
|
|
|
47279 |
29831 |
product |
49241 |
M |
0 |
|
|
0 |
|
|
|
|
47295 |
29820 |
product |
49257 |
M |
0 |
|
|
0 |
|
|
|
|
47366 |
29873 |
product |
49328 |
M |
0 |
|
|
0 |
|
|
|
|
47374 |
29869 |
product |
49336 |
M |
0 |
|
|
0 |
|
|
|
|
47376 |
29868 |
product |
49338 |
M |
0 |
|
|
0 |
|
|
|
|
47379 |
29865 |
product |
49341 |
M |
0 |
|
|
0 |
|
|
|
|
47381 |
29863 |
product |
49343 |
M |
0 |
|
|
0 |
|
|
|
|
47730 |
29867 |
product |
49691 |
M |
0 |
|
|