Query time 0.00097
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 ('9853','9854','9855','9856','9857','9858','9859','9860','9861','9862','9863','9864','9865','9866','9867','9868')))",
"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 |
|
|
|
|
20674 |
9853 |
product |
22636 |
M |
0 |
|
|
0 |
|
|
|
|
20675 |
9854 |
product |
22637 |
M |
0 |
|
|
0 |
|
|
|
|
20676 |
9855 |
product |
22638 |
M |
0 |
|
|
0 |
|
|
|
|
20677 |
9856 |
product |
22639 |
M |
0 |
|
|
0 |
|
|
|
|
20678 |
9857 |
product |
22640 |
M |
0 |
|
|
0 |
|
|
|
|
20679 |
9858 |
product |
22641 |
M |
0 |
|
|
0 |
|
|
|
|
20680 |
9859 |
product |
22642 |
M |
0 |
|
|
0 |
|
|
|
|
20682 |
9861 |
product |
22644 |
M |
0 |
|
|
0 |
|
|
|
|
20683 |
9862 |
product |
22645 |
M |
0 |
|
|
0 |
|
|
|
|
20684 |
9863 |
product |
22646 |
M |
0 |
|
|
0 |
|
|
|
|
20685 |
9864 |
product |
22647 |
M |
0 |
|
|
0 |
|
|
|
|
20686 |
9865 |
product |
22648 |
M |
0 |
|
|
0 |
|
|
|
|
20687 |
9866 |
product |
22649 |
M |
0 |
|
|
0 |
|
|
|
|
20688 |
9867 |
product |
22650 |
M |
0 |
|
|
0 |
|
|
|
|
20689 |
9868 |
product |
22651 |
M |
0 |
|
|
0 |
|
|
|
|
21215 |
9860 |
product |
23177 |
M |
1 |
|
|