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 ('9565','9566','9567','9568','9569','9570','9571','9572','9573','9574','9575','9576','9577','9578','9579','9580')))",
"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 |
|
|
|
|
20389 |
9565 |
product |
22351 |
M |
0 |
|
|
0 |
|
|
|
|
20390 |
9566 |
product |
22352 |
M |
0 |
|
|
0 |
|
|
|
|
20391 |
9567 |
product |
22353 |
M |
0 |
|
|
0 |
|
|
|
|
20392 |
9568 |
product |
22354 |
M |
0 |
|
|
0 |
|
|
|
|
20393 |
9569 |
product |
22355 |
M |
0 |
|
|
0 |
|
|
|
|
20394 |
9570 |
product |
22356 |
M |
0 |
|
|
0 |
|
|
|
|
20395 |
9571 |
product |
22357 |
M |
0 |
|
|
0 |
|
|
|
|
20396 |
9572 |
product |
22358 |
M |
0 |
|
|
0 |
|
|
|
|
20397 |
9573 |
product |
22359 |
M |
0 |
|
|
0 |
|
|
|
|
20398 |
9574 |
product |
22360 |
M |
0 |
|
|
0 |
|
|
|
|
20399 |
9575 |
product |
22361 |
M |
0 |
|
|
0 |
|
|
|
|
20400 |
9576 |
product |
22362 |
M |
0 |
|
|
0 |
|
|
|
|
20401 |
9577 |
product |
22363 |
M |
0 |
|
|
0 |
|
|
|
|
20402 |
9578 |
product |
22364 |
M |
0 |
|
|
0 |
|
|
|
|
20403 |
9579 |
product |
22365 |
M |
0 |
|
|
0 |
|
|
|
|
26074 |
9580 |
product |
28036 |
M |
0 |
|
|