Query time 0.00093
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "126.41"
},
"ordering_operation": {
"using_filesort": true,
"cost_info": {
"sort_cost": "23.00"
},
"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": 23,
"rows_produced_per_join": 23,
"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 ('379','380','381','382','383','384','385','386','387','388','389','390','391','392','393','394')))",
"cost_info": {
"read_cost": "43.61",
"eval_cost": "4.60",
"prefix_cost": "48.21",
"data_read_per_join": "2K"
},
"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": 23,
"filtered": "100.00",
"cost_info": {
"read_cost": "23.00",
"eval_cost": "4.60",
"prefix_cost": "75.81",
"data_read_per_join": "17K"
},
"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": 23,
"filtered": "100.00",
"cost_info": {
"read_cost": "23.00",
"eval_cost": "4.60",
"prefix_cost": "103.41",
"data_read_per_join": "13K"
},
"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 |
|
|
|
|
778 |
379 |
product |
2755 |
M |
0 |
|
|
0 |
|
|
|
|
780 |
380 |
product |
2757 |
M |
0 |
|
|
0 |
|
|
|
|
781 |
381 |
product |
2758 |
M |
0 |
|
|
0 |
|
|
|
|
783 |
382 |
product |
2760 |
M |
0 |
|
|
0 |
|
|
|
|
785 |
383 |
product |
2762 |
M |
0 |
|
|
0 |
|
|
|
|
787 |
384 |
product |
2764 |
M |
0 |
|
|
0 |
|
|
|
|
789 |
385 |
product |
2766 |
M |
0 |
|
|
0 |
|
|
|
|
791 |
386 |
product |
2768 |
M |
0 |
|
|
0 |
|
|
|
|
793 |
387 |
product |
2770 |
M |
0 |
|
|
0 |
|
|
|
|
795 |
388 |
product |
2772 |
M |
0 |
|
|
0 |
|
|
|
|
797 |
389 |
product |
2774 |
M |
0 |
|
|
0 |
|
|
|
|
799 |
390 |
product |
2776 |
M |
0 |
|
|
0 |
|
|
|
|
801 |
391 |
product |
2778 |
M |
0 |
|
|
0 |
|
|
|
|
803 |
392 |
product |
2780 |
M |
0 |
|
|
0 |
|
|
|
|
805 |
393 |
product |
2782 |
M |
0 |
|
|
0 |
|
|
|
|
807 |
394 |
product |
2784 |
M |
0 |
|
|