Query time 0.00110
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 ('9741','9742','9743','9744','9745','9746','9747','9748','9749','9750','9751','9752','9753','9754','9755','9756')))",
"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 |
|
|
|
|
20565 |
9741 |
product |
22527 |
M |
0 |
|
|
0 |
|
|
|
|
20566 |
9742 |
product |
22528 |
M |
0 |
|
|
0 |
|
|
|
|
20567 |
9743 |
product |
22529 |
M |
0 |
|
|
0 |
|
|
|
|
20568 |
9744 |
product |
22530 |
M |
0 |
|
|
0 |
|
|
|
|
20569 |
9745 |
product |
22531 |
M |
0 |
|
|
0 |
|
|
|
|
20570 |
9746 |
product |
22532 |
M |
0 |
|
|
0 |
|
|
|
|
20571 |
9747 |
product |
22533 |
M |
0 |
|
|
0 |
|
|
|
|
20572 |
9748 |
product |
22534 |
M |
0 |
|
|
0 |
|
|
|
|
20573 |
9749 |
product |
22535 |
M |
0 |
|
|
0 |
|
|
|
|
20574 |
9750 |
product |
22536 |
M |
0 |
|
|
0 |
|
|
|
|
20575 |
9751 |
product |
22537 |
M |
0 |
|
|
0 |
|
|
|
|
20576 |
9752 |
product |
22538 |
M |
0 |
|
|
0 |
|
|
|
|
20577 |
9753 |
product |
22539 |
M |
0 |
|
|
0 |
|
|
|
|
20578 |
9754 |
product |
22540 |
M |
0 |
|
|
0 |
|
|
|
|
20579 |
9755 |
product |
22541 |
M |
0 |
|
|
0 |
|
|
|
|
20580 |
9756 |
product |
22542 |
M |
0 |
|
|