Query time 0.00095
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "144.01"
},
"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": 30,
"rows_produced_per_join": 30,
"filtered": "100.00",
"index_condition": "(`portal`.`q_products_categories`.`product_id` in (2734,2735,2694,2695,2696,2697,2698,2699,2700,2701,2675,2676,2677,2678,2679,2680,2681,2682,2683,2684,2685,2686,2687,2688,2689,2607,2608,2609,2610,2611))",
"cost_info": {
"read_cost": "66.01",
"eval_cost": "6.00",
"prefix_cost": "72.01",
"data_read_per_join": "480"
},
"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": 30,
"filtered": "100.00",
"cost_info": {
"read_cost": "30.00",
"eval_cost": "6.00",
"prefix_cost": "108.01",
"data_read_per_join": "480"
},
"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": "30.00",
"eval_cost": "1.20",
"prefix_cost": "144.01",
"data_read_per_join": "15K"
},
"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 |
2607 |
5M |
|
2608 |
5M |
|
2609 |
5M |
|
2610 |
5M |
|
2611 |
5M |
|
2675 |
39M |
|
2676 |
39M |
|
2677 |
39M |
|
2678 |
39M |
|
2679 |
39M |
|
2680 |
39M |
|
2681 |
4M |
|
2682 |
4M |
|
2683 |
39M |
|
2684 |
4M |
|
2685 |
4M |
|
2686 |
39M |
|
2687 |
39M |
|
2688 |
39M |
|
2689 |
4M |
|
2694 |
4M |
|
2695 |
4M |
|
2696 |
4M |
|
2697 |
4M |
|
2698 |
4M |
|
2699 |
4M |
|
2700 |
4M |
|
2701 |
4M |
|
2734 |
39M |
|
2735 |
5M |
|