Query time 0.00093
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 ('2636','2637','2638','2640','2641','2642','2643','2644','2645','2646','2647','2648','2543','2544','2545','2546')))",
"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 |
|
|
|
|
5858 |
2543 |
product |
7829 |
M |
0 |
|
|
0 |
|
|
|
|
5860 |
2544 |
product |
7831 |
M |
0 |
|
|
0 |
|
|
|
|
5862 |
2545 |
product |
7833 |
M |
0 |
|
|
0 |
|
|
|
|
5864 |
2546 |
product |
7835 |
M |
0 |
|
|
0 |
|
|
|
|
5966 |
2636 |
product |
7937 |
M |
0 |
|
|
0 |
|
|
|
|
5967 |
2637 |
product |
7938 |
M |
0 |
|
|
0 |
|
|
|
|
5968 |
2638 |
product |
7939 |
M |
0 |
|
|
0 |
|
|
|
|
5971 |
2640 |
product |
7942 |
M |
0 |
|
|
0 |
|
|
|
|
5973 |
2641 |
product |
7944 |
M |
0 |
|
|
0 |
|
|
|
|
5975 |
2642 |
product |
7946 |
M |
0 |
|
|
0 |
|
|
|
|
5977 |
2643 |
product |
7948 |
M |
0 |
|
|
0 |
|
|
|
|
5978 |
2644 |
product |
7949 |
M |
0 |
|
|
0 |
|
|
|
|
5979 |
2645 |
product |
7950 |
M |
0 |
|
|
0 |
|
|
|
|
5980 |
2646 |
product |
7951 |
M |
0 |
|
|
0 |
|
|
|
|
5982 |
2647 |
product |
7953 |
M |
0 |
|
|
0 |
|
|
|
|
5983 |
2648 |
product |
7954 |
M |
0 |
|
|