Query time 0.00088
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "117.81"
},
"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": 33,
"rows_produced_per_join": 33,
"filtered": "100.00",
"index_condition": "(`portal`.`q_products_categories`.`product_id` in (9966,9967,9968,9969,9970,9971,9972,9973,9974,9975,9976,9977,9978,9979,9980,9981,9982,9983,7798,7797,7779,7778,7777,7776,7775,7772,7771,6913,6914,6915,6916,6917))",
"cost_info": {
"read_cost": "71.61",
"eval_cost": "6.60",
"prefix_cost": "78.21",
"data_read_per_join": "528"
},
"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": 6,
"filtered": "20.00",
"cost_info": {
"read_cost": "33.00",
"eval_cost": "1.32",
"prefix_cost": "117.81",
"data_read_per_join": "17K"
},
"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 |
6913 |
512M |
6914 |
413M |
6915 |
512M |
6916 |
512M |
6917 |
512M |
7771 |
177M |
7772 |
177M |
7775 |
177M |
7776 |
177M |
7777 |
177M |
7778 |
177M |
7779 |
177M |
7797 |
177M |
7798 |
177M |
9966 |
383M |
9967 |
419M |
9968 |
419M |
9969 |
551M |
9970 |
385M |
9971 |
193M |
9972 |
419M |
9973 |
419M |
9974 |
419M |
9975 |
419M |
9976 |
419M |
9977 |
419M |
9978 |
419M |
9979 |
193M |
9980 |
193M |
9981 |
193M |
9982 |
194M |
9983 |
193M |