Query time 0.00105
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "123.01"
},
"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": 35,
"rows_produced_per_join": 35,
"filtered": "100.00",
"index_condition": "(`portal`.`q_products_categories`.`product_id` in (32484,32485,32486,32487,32488,32489,32490,32491,32492,32493,32494,32495,32496,32497,32499,32500,32501,32502,32503,32504,32505,32506,32507,32508,32509,32510,32511,32512,32513,32514,32515,32516))",
"cost_info": {
"read_cost": "74.01",
"eval_cost": "7.00",
"prefix_cost": "81.01",
"data_read_per_join": "560"
},
"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": "35.00",
"eval_cost": "1.40",
"prefix_cost": "123.01",
"data_read_per_join": "18K"
},
"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 |
32484 |
96M |
32485 |
96M |
32486 |
96M |
32487 |
97M |
32488 |
97M |
32489 |
97M |
32490 |
97M |
32491 |
97M |
32492 |
97M |
32493 |
97M |
32494 |
97M |
32495 |
96M |
32496 |
96M |
32497 |
96M |
32499 |
96M |
32500 |
96M |
32501 |
96M |
32502 |
96M |
32503 |
96M |
32504 |
96M |
32505 |
96M |
32506 |
96M |
32507 |
96M |
32508 |
97M |
32509 |
97M |
32510 |
97M |
32511 |
97M |
32512 |
97M |
32513 |
97M |
32514 |
97M |
32515 |
97M |
32516 |
97M |