Query time 0.00098
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 (32689,32690,32691,32692,32693,32694,32695,32696,32697,32698,32699,32700,32701,32702,32703,32704,32705,32706,32707,32708,32709,32710,32711,32712,32713,32714,32715,32716,32717,32718,32719,32720))",
"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 |
32689 |
96M |
32690 |
96M |
32691 |
96M |
32692 |
96M |
32693 |
96M |
32694 |
96M |
32695 |
96M |
32696 |
96M |
32697 |
96M |
32698 |
96M |
32699 |
96M |
32700 |
96M |
32701 |
96M |
32702 |
96M |
32703 |
96M |
32704 |
96M |
32705 |
96M |
32706 |
96M |
32707 |
96M |
32708 |
96M |
32709 |
97M |
32710 |
97M |
32711 |
97M |
32712 |
97M |
32713 |
97M |
32714 |
97M |
32715 |
97M |
32716 |
96M |
32717 |
96M |
32718 |
96M |
32719 |
96M |
32720 |
96M |