Query time 0.00095
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 ('9821','9822','9823','9824','9825','9826','9827','9828','9829','9830','9831','9832','9833','9834','9835','9836')))",
"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 |
|
|
|
|
20642 |
9821 |
product |
22604 |
M |
0 |
|
|
0 |
|
|
|
|
20643 |
9822 |
product |
22605 |
M |
0 |
|
|
0 |
|
|
|
|
20644 |
9823 |
product |
22606 |
M |
0 |
|
|
0 |
|
|
|
|
20645 |
9824 |
product |
22607 |
M |
0 |
|
|
0 |
|
|
|
|
20646 |
9825 |
product |
22608 |
M |
0 |
|
|
0 |
|
|
|
|
20647 |
9826 |
product |
22609 |
M |
0 |
|
|
0 |
|
|
|
|
20648 |
9827 |
product |
22610 |
M |
0 |
|
|
0 |
|
|
|
|
20649 |
9828 |
product |
22611 |
M |
0 |
|
|
0 |
|
|
|
|
20651 |
9830 |
product |
22613 |
M |
0 |
|
|
0 |
|
|
|
|
20652 |
9831 |
product |
22614 |
M |
0 |
|
|
0 |
|
|
|
|
20653 |
9832 |
product |
22615 |
M |
0 |
|
|
0 |
|
|
|
|
20654 |
9833 |
product |
22616 |
M |
0 |
|
|
0 |
|
|
|
|
20655 |
9834 |
product |
22617 |
M |
0 |
|
|
0 |
|
|
|
|
20656 |
9835 |
product |
22618 |
M |
0 |
|
|
0 |
|
|
|
|
20657 |
9836 |
product |
22619 |
M |
0 |
|
|
0 |
|
|
|
|
21849 |
9829 |
product |
23811 |
M |
0 |
|
|