Query time 0.00167
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "58.90"
},
"ordering_operation": {
"using_filesort": true,
"cost_info": {
"sort_cost": "11.00"
},
"nested_loop": [
{
"table": {
"table_name": "cscart_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": 11,
"rows_produced_per_join": 11,
"filtered": "100.00",
"index_condition": "((`maniamall_cscart`.`cscart_images_links`.`object_type` = 'category') and (`maniamall_cscart`.`cscart_images_links`.`type` = 'M') and (`maniamall_cscart`.`cscart_images_links`.`object_id` in (8247,8243,21368,8346,8476,8488,8367,8509,8244,8558,8571)))",
"cost_info": {
"read_cost": "22.69",
"eval_cost": "1.10",
"prefix_cost": "23.79",
"data_read_per_join": "1K"
},
"used_columns": [
"pair_id",
"object_id",
"object_type",
"image_id",
"detailed_id",
"type",
"position"
]
}
},
{
"table": {
"table_name": "cscart_images",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"image_id"
],
"key_length": "3",
"ref": [
"maniamall_cscart.cscart_images_links.image_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 11,
"filtered": "100.00",
"cost_info": {
"read_cost": "10.98",
"eval_cost": "1.10",
"prefix_cost": "35.87",
"data_read_per_join": "8K"
},
"used_columns": [
"image_id",
"image_path",
"image_x",
"image_y"
],
"attached_condition": "<if>(is_not_null_compl(cscart_images), (`maniamall_cscart`.`cscart_images_links`.`image_id` = `maniamall_cscart`.`cscart_images`.`image_id`), true)"
}
},
{
"table": {
"table_name": "cscart_common_descriptions",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"object_id",
"lang_code",
"object_holder"
],
"key_length": "107",
"ref": [
"maniamall_cscart.cscart_images.image_id",
"const",
"const"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 11,
"filtered": "100.00",
"cost_info": {
"read_cost": "10.93",
"eval_cost": "1.10",
"prefix_cost": "47.90",
"data_read_per_join": "6K"
},
"used_columns": [
"object_id",
"description",
"lang_code",
"object_holder"
],
"attached_condition": "<if>(is_not_null_compl(cscart_common_descriptions), (`maniamall_cscart`.`cscart_common_descriptions`.`object_id` = `maniamall_cscart`.`cscart_images`.`image_id`), true)"
}
}
]
}
}
}
Result
| pair_id |
object_id |
object_type |
image_id |
detailed_id |
type |
position |
image_path |
alt |
image_x |
image_y |
images_image_id |
| 928819 |
8243 |
category |
0 |
929056 |
M |
0 |
|
|
|
|
|
| 928828 |
8244 |
category |
0 |
929065 |
M |
0 |
|
|
|
|
|
| 928846 |
8247 |
category |
0 |
929083 |
M |
0 |
|
|
|
|
|
| 929928 |
8346 |
category |
0 |
930165 |
M |
0 |
|
|
|
|
|
| 930182 |
8367 |
category |
0 |
930419 |
M |
0 |
|
|
|
|
|
| 932531 |
8476 |
category |
0 |
932768 |
M |
0 |
|
|
|
|
|
| 932966 |
8488 |
category |
0 |
933203 |
M |
0 |
|
|
|
|
|
| 933617 |
8509 |
category |
0 |
933854 |
M |
0 |
|
|
|
|
|
| 934786 |
8558 |
category |
0 |
935023 |
M |
0 |
|
|
|
|
|
| 935138 |
8571 |
category |
0 |
935375 |
M |
0 |
|
|
|
|
|
| 1656953 |
21368 |
category |
0 |
1657191 |
M |
0 |
|
|
|
|
|