Query time 0.00100
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "125.61"
},
"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": 36,
"rows_produced_per_join": 36,
"filtered": "100.00",
"index_condition": "(`portal`.`q_products_categories`.`product_id` in (9837,9838,9839,9840,9841,9842,9843,9844,9845,9846,9847,9848,9849,9850,9851,9852,9853,9854,9855,9856,9857,9858,9859,9860,9861,9862,9863,9864,9865,9866,9867,9868))",
"cost_info": {
"read_cost": "75.21",
"eval_cost": "7.20",
"prefix_cost": "82.41",
"data_read_per_join": "576"
},
"used_columns": [
"product_id",
"category_id",
"link_type"
]
}
},
{
"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": 7,
"filtered": "20.00",
"cost_info": {
"read_cost": "36.00",
"eval_cost": "1.44",
"prefix_cost": "125.61",
"data_read_per_join": "19K"
},
"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 |
9837 |
192M |
9838 |
192M |
9839 |
192M |
9840 |
192M |
9841 |
192M |
9842 |
301M |
9843 |
301M |
9844 |
301M |
9845 |
192M |
9846 |
301M |
9847 |
301M |
9848 |
301M |
9849 |
301M |
9850 |
301M |
9851 |
191M |
9852 |
301M |
9853 |
301M |
9854 |
192M |
9855 |
192M |
9856 |
192M |
9857 |
192M |
9858 |
192M |
9859 |
301M |
9860 |
301M |
9861 |
196M |
9862 |
301M |
9863 |
413,428M |
9864 |
512M |
9865 |
79,475M |
9866 |
79,475M |
9867 |
512M |
9868 |
413M |