Query time 0.00090
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 (35664,35665,35666,35667,35668,35669,35670,35671,35672,35673,35674,35675,35676,35677,35678,35679,35680,35681,35682,35683,35684,35685,35686,35687,35688,35689,35690,35691,35692,35693,35694,35695))",
"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 |
35664 |
39M |
|
35665 |
39M |
|
35666 |
39M |
|
35667 |
39M |
|
35668 |
39M |
|
35669 |
39M |
|
35670 |
39M |
|
35671 |
39M |
|
35672 |
39M |
|
35673 |
39M |
|
35674 |
39M |
|
35675 |
39M |
|
35676 |
39M |
|
35677 |
39M |
|
35678 |
39M |
|
35679 |
39M |
|
35680 |
39M |
|
35681 |
39M |
|
35682 |
39M |
|
35683 |
39M |
|
35684 |
39M |
|
35685 |
39M |
|
35686 |
39M |
|
35687 |
39M |
|
35688 |
39M |
|
35689 |
39M |
|
35690 |
39M |
|
35691 |
39M |
|
35692 |
39M |
|
35693 |
39M |
|
35694 |
39M |
|
35695 |
39M |
|