Query time 0.00081
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 (32554,32555,32556,32557,32558,32559,32560,32562,32563,32564,32565,32566,32567,32568,32569,32570,32571,32573,32574,32575,32576,32577,32579,32580,32581,32582,32583,32584,32585,32586,32588,32589))",
"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 |
32554 |
97M |
32555 |
96M |
32556 |
96M |
32557 |
96M |
32558 |
96M |
32559 |
96M |
32560 |
96M |
32562 |
96M |
32563 |
96M |
32564 |
96M |
32565 |
96M |
32566 |
96M |
32567 |
96M |
32568 |
96M |
32569 |
96M |
32570 |
97M |
32571 |
97M |
32573 |
97M |
32574 |
97M |
32575 |
97M |
32576 |
97M |
32577 |
96M |
32579 |
97M |
32580 |
97M |
32581 |
96M |
32582 |
96M |
32583 |
96M |
32584 |
96M |
32585 |
96M |
32586 |
96M |
32588 |
96M |
32589 |
96M |