Query time 0.00081
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "128.21"
},
"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": 37,
"rows_produced_per_join": 37,
"filtered": "100.00",
"index_condition": "(`portal`.`q_products_categories`.`product_id` in (32654,32655,32656,32657,32658,32659,32660,32661,32662,32663,32664,32665,32666,32667,32668,32669,32671,32672,32673,32675,32676,32677,32679,32680,32681,32682,32683,32684,32685,32686,32687,32688))",
"cost_info": {
"read_cost": "76.41",
"eval_cost": "7.40",
"prefix_cost": "83.81",
"data_read_per_join": "592"
},
"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": "37.00",
"eval_cost": "1.48",
"prefix_cost": "128.21",
"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 |
32654 |
96M |
32655 |
96M |
32656 |
97M |
32657 |
97M |
32658 |
97M |
32659 |
97M |
32660 |
97M |
32661 |
96M |
32662 |
96M |
32663 |
96M |
32664 |
96M |
32665 |
96M |
32666 |
96M |
32667 |
96M |
32668 |
96M |
32669 |
96M |
32671 |
96M |
32672 |
96M |
32673 |
96M |
32675 |
96M |
32676 |
96M |
32677 |
96M |
32679 |
96M |
32680 |
96M |
32681 |
96M |
32682 |
96M |
32683 |
96M |
32684 |
96M |
32685 |
96M |
32686 |
96M |
32687 |
96M |
32688 |
96M |