Query time 0.00109
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 ('473','474','475','476','477','478','479','480','481','482','483','484','485','486','487','488')))",
"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 |
|
|
|
|
980 |
473 |
product |
2957 |
M |
0 |
|
|
0 |
|
|
|
|
982 |
474 |
product |
2959 |
M |
0 |
|
|
0 |
|
|
|
|
983 |
475 |
product |
2960 |
M |
0 |
|
|
0 |
|
|
|
|
985 |
476 |
product |
2962 |
M |
0 |
|
|
0 |
|
|
|
|
987 |
477 |
product |
2964 |
M |
0 |
|
|
0 |
|
|
|
|
989 |
478 |
product |
2966 |
M |
0 |
|
|
0 |
|
|
|
|
991 |
479 |
product |
2968 |
M |
0 |
|
|
0 |
|
|
|
|
993 |
480 |
product |
2970 |
M |
0 |
|
|
0 |
|
|
|
|
995 |
481 |
product |
2972 |
M |
0 |
|
|
0 |
|
|
|
|
997 |
482 |
product |
2974 |
M |
0 |
|
|
0 |
|
|
|
|
999 |
483 |
product |
2976 |
M |
0 |
|
|
0 |
|
|
|
|
1001 |
484 |
product |
2978 |
M |
0 |
|
|
0 |
|
|
|
|
1003 |
485 |
product |
2980 |
M |
0 |
|
|
0 |
|
|
|
|
1005 |
486 |
product |
2982 |
M |
0 |
|
|
0 |
|
|
|
|
1007 |
487 |
product |
2984 |
M |
0 |
|
|
0 |
|
|
|
|
1009 |
488 |
product |
2986 |
M |
0 |
|
|