Query time 0.00127
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 ('8239','8238','8237','8236','8235','8234','8233','7817','7818','7819','7820','7821','7822','7823','7824','7825')))",
"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 |
|
|
|
|
16236 |
7817 |
product |
18198 |
M |
0 |
|
|
0 |
|
|
|
|
16237 |
7818 |
product |
18199 |
M |
0 |
|
|
0 |
|
|
|
|
16238 |
7819 |
product |
18200 |
M |
0 |
|
|
0 |
|
|
|
|
16239 |
7820 |
product |
18201 |
M |
0 |
|
|
0 |
|
|
|
|
16240 |
7821 |
product |
18202 |
M |
0 |
|
|
0 |
|
|
|
|
16241 |
7822 |
product |
18203 |
M |
0 |
|
|
0 |
|
|
|
|
16242 |
7823 |
product |
18204 |
M |
0 |
|
|
0 |
|
|
|
|
16243 |
7824 |
product |
18205 |
M |
0 |
|
|
0 |
|
|
|
|
16244 |
7825 |
product |
18206 |
M |
0 |
|
|
0 |
|
|
|
|
17184 |
8233 |
product |
19146 |
M |
0 |
|
|
0 |
|
|
|
|
17185 |
8234 |
product |
19147 |
M |
0 |
|
|
0 |
|
|
|
|
17186 |
8235 |
product |
19148 |
M |
0 |
|
|
0 |
|
|
|
|
17188 |
8237 |
product |
19150 |
M |
0 |
|
|
0 |
|
|
|
|
17189 |
8238 |
product |
19151 |
M |
0 |
|
|
0 |
|
|
|
|
17190 |
8239 |
product |
19152 |
M |
0 |
|
|
0 |
|
|
|
|
49504 |
8236 |
product |
51465 |
M |
0 |
|
|