Query time 0.00100
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 ('7538','7537','7536','7523','7522','7521','7520','7346','7345','7344','7343','7342','7341','7340','7339','7338')))",
"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 |
|
|
|
|
14353 |
7339 |
product |
16315 |
M |
0 |
|
|
0 |
|
|
|
|
14355 |
7340 |
product |
16317 |
M |
0 |
|
|
0 |
|
|
|
|
14356 |
7341 |
product |
16318 |
M |
0 |
|
|
0 |
|
|
|
|
14358 |
7342 |
product |
16320 |
M |
0 |
|
|
0 |
|
|
|
|
14360 |
7343 |
product |
16322 |
M |
0 |
|
|
0 |
|
|
|
|
14362 |
7344 |
product |
16324 |
M |
0 |
|
|
0 |
|
|
|
|
14365 |
7346 |
product |
16327 |
M |
0 |
|
|
0 |
|
|
|
|
15199 |
7522 |
product |
17161 |
M |
0 |
|
|
0 |
|
|
|
|
15200 |
7523 |
product |
17162 |
M |
0 |
|
|
0 |
|
|
|
|
15207 |
7536 |
product |
17169 |
M |
0 |
|
|
0 |
|
|
|
|
37384 |
7520 |
product |
39346 |
M |
0 |
|
|
0 |
|
|
|
|
37692 |
7345 |
product |
39654 |
M |
0 |
|
|
0 |
|
|
|
|
61981 |
7521 |
product |
63937 |
M |
0 |
|
|
0 |
|
|
|
|
62007 |
7338 |
product |
63963 |
M |
0 |
|
|
0 |
|
|
|
|
16200 |
7538 |
product |
18162 |
M |
1 |
|
|
0 |
|
|
|
|
16201 |
7537 |
product |
18163 |
M |
1 |
|
|