Query time 0.00065
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "75.81"
},
"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": 23,
"rows_produced_per_join": 23,
"filtered": "100.00",
"index_condition": "(`portal`.`q_products_categories`.`product_id` in (9805,9806,9807,9808,9809,9810,9811,9812,9813,9814,9815,9816,9817,9818,9819,9820))",
"cost_info": {
"read_cost": "43.61",
"eval_cost": "4.60",
"prefix_cost": "48.21",
"data_read_per_join": "368"
},
"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": 4,
"filtered": "20.00",
"cost_info": {
"read_cost": "23.00",
"eval_cost": "0.92",
"prefix_cost": "75.81",
"data_read_per_join": "12K"
},
"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 |
9805 |
429M |
9806 |
200M |
9807 |
200M |
9808 |
200M |
9809 |
301M |
9810 |
301M |
9811 |
248,386M |
9812 |
248,386M |
9813 |
248,386M |
9814 |
248,386M |
9815 |
248,386M |
9816 |
248,386M |
9817 |
192M |
9818 |
192M |
9819 |
192M |
9820 |
192M |