Query time 0.00079
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "133.41"
},
"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": 39,
"rows_produced_per_join": 39,
"filtered": "100.00",
"index_condition": "(`portal`.`q_products_categories`.`product_id` in (32590,32591,32592,32593,32594,32595,32596,32597,32598,32599,32600,32601,32602,32603,32604,32605,32606,32607,32608,32609,32610,32611,32612,32613,32614,32615,32616,32617,32618,32619,32620,32621))",
"cost_info": {
"read_cost": "78.81",
"eval_cost": "7.80",
"prefix_cost": "86.61",
"data_read_per_join": "624"
},
"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": "39.00",
"eval_cost": "1.56",
"prefix_cost": "133.41",
"data_read_per_join": "20K"
},
"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 |
32590 |
97M |
32591 |
97M |
32592 |
97M |
32593 |
97M |
32594 |
97M |
32595 |
97M |
32596 |
97M |
32597 |
97M |
32598 |
97M |
32599 |
97M |
32600 |
97M |
32601 |
97M |
32602 |
97M |
32603 |
96M |
32604 |
96M |
32605 |
96M |
32606 |
97M |
32607 |
97M |
32608 |
97M |
32609 |
97M |
32610 |
97M |
32611 |
97M |
32612 |
97M |
32613 |
97M |
32614 |
97M |
32615 |
97M |
32616 |
97M |
32617 |
96M |
32618 |
96M |
32619 |
96M |
32620 |
97,96M |
32621 |
97M |