Query time 0.00199
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "112.01"
},
"ordering_operation": {
"using_filesort": true,
"cost_info": {
"sort_cost": "20.00"
},
"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": 20,
"rows_produced_per_join": 20,
"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 ('9950','9951','9952','9953','9954','9955','9956','9957','9958','9959','9960','9961','9962','9963','9964','9965')))",
"cost_info": {
"read_cost": "40.01",
"eval_cost": "4.00",
"prefix_cost": "44.01",
"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": 20,
"filtered": "100.00",
"cost_info": {
"read_cost": "20.00",
"eval_cost": "4.00",
"prefix_cost": "68.01",
"data_read_per_join": "15K"
},
"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": 20,
"filtered": "100.00",
"cost_info": {
"read_cost": "20.00",
"eval_cost": "4.00",
"prefix_cost": "92.01",
"data_read_per_join": "11K"
},
"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 |
|
|
|
|
19641 |
9959 |
product |
21603 |
M |
0 |
|
|
0 |
|
|
|
|
19642 |
9960 |
product |
21604 |
M |
0 |
|
|
0 |
|
|
|
|
19643 |
9961 |
product |
21605 |
M |
0 |
|
|
0 |
|
|
|
|
19644 |
9962 |
product |
21606 |
M |
0 |
|
|
0 |
|
|
|
|
19645 |
9963 |
product |
21607 |
M |
0 |
|
|
0 |
|
|
|
|
19646 |
9964 |
product |
21608 |
M |
0 |
|
|
0 |
|
|
|
|
19648 |
9965 |
product |
21610 |
M |
0 |
|
|
0 |
|
|
|
|
19656 |
9953 |
product |
21618 |
M |
0 |
|
|
0 |
|
|
|
|
19657 |
9954 |
product |
21619 |
M |
0 |
|
|
0 |
|
|
|
|
19658 |
9955 |
product |
21620 |
M |
0 |
|
|
0 |
|
|
|
|
19659 |
9956 |
product |
21621 |
M |
0 |
|
|
0 |
|
|
|
|
19661 |
9957 |
product |
21623 |
M |
0 |
|
|
0 |
|
|
|
|
19662 |
9958 |
product |
21624 |
M |
0 |
|
|
0 |
|
|
|
|
19672 |
9950 |
product |
21634 |
M |
0 |
|
|
0 |
|
|
|
|
19673 |
9951 |
product |
21635 |
M |
0 |
|
|
0 |
|
|
|
|
20764 |
9952 |
product |
22726 |
M |
0 |
|
|
0 |
|
|
|
|
20765 |
9952 |
product |
22727 |
M |
0 |
|
|