Query time 0.00105
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "157.41"
},
"grouping_operation": {
"using_filesort": false,
"nested_loop": [
{
"table": {
"table_name": "q_products_categories",
"access_type": "range",
"possible_keys": [
"PRIMARY",
"pt"
],
"key": "pt",
"used_key_parts": [
"product_id"
],
"key_length": "3",
"rows_examined_per_scan": 33,
"rows_produced_per_join": 33,
"filtered": "100.00",
"index_condition": "(`portal`.`q_products_categories`.`product_id` in (3628,3629,3630,3631,3632,3633,3634,3635,3636,3637,3638,3639,3640,3641,3642,3643,3644,3645,3646,3647,3648,3649,3650,3651,3652,3653,3654,3655,3656,3657,3658,3659))",
"cost_info": {
"read_cost": "71.61",
"eval_cost": "6.60",
"prefix_cost": "78.21",
"data_read_per_join": "528"
},
"used_columns": [
"product_id",
"category_id",
"link_type"
]
}
},
{
"table": {
"table_name": "product_position_source",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY",
"pt"
],
"key": "PRIMARY",
"used_key_parts": [
"category_id",
"product_id"
],
"key_length": "6",
"ref": [
"const",
"portal.q_products_categories.product_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 33,
"filtered": "100.00",
"cost_info": {
"read_cost": "33.00",
"eval_cost": "6.60",
"prefix_cost": "117.81",
"data_read_per_join": "528"
},
"used_columns": [
"product_id",
"category_id",
"position"
]
}
},
{
"table": {
"table_name": "q_categories",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY",
"c_status",
"p_category_id"
],
"key": "PRIMARY",
"used_key_parts": [
"category_id"
],
"key_length": "3",
"ref": [
"portal.q_products_categories.category_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 6,
"filtered": "20.00",
"cost_info": {
"read_cost": "33.00",
"eval_cost": "1.32",
"prefix_cost": "157.41",
"data_read_per_join": "17K"
},
"used_columns": [
"category_id",
"usergroup_ids",
"status"
],
"attached_condition": "(((`portal`.`q_categories`.`usergroup_ids` = '') or find_in_set(0,`portal`.`q_categories`.`usergroup_ids`) or find_in_set(1,`portal`.`q_categories`.`usergroup_ids`)) and (`portal`.`q_categories`.`status` in ('A','H')))"
}
}
]
}
}
}
Result
product_id |
category_ids |
position |
3628 |
442M |
|
3629 |
442M |
|
3630 |
478M |
|
3631 |
478M |
|
3632 |
478M |
|
3633 |
478M |
|
3634 |
478M |
|
3635 |
478M |
|
3636 |
478M |
|
3637 |
479M |
|
3638 |
479M |
|
3639 |
479M |
|
3640 |
455M |
|
3641 |
455M |
|
3642 |
442M |
|
3643 |
479M |
|
3644 |
479M |
|
3645 |
479M |
|
3646 |
479M |
|
3647 |
478M |
|
3648 |
479M |
|
3649 |
442M |
|
3650 |
442M |
|
3651 |
478,477M |
|
3652 |
478,477M |
|
3653 |
478,477M |
|
3654 |
478,477M |
|
3655 |
478,477M |
|
3656 |
478,477M |
|
3657 |
478,477M |
|
3658 |
478,477M |
|
3659 |
477,478M |
|