Query time 0.00075
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "73.21"
},
"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": 22,
"rows_produced_per_join": 22,
"filtered": "100.00",
"index_condition": "(`portal`.`q_products_categories`.`product_id` in (9917,9918,9919,9920,9921,9922,9923,9924,9925,9926,9927,9928,9929,9930,9931,9932))",
"cost_info": {
"read_cost": "42.41",
"eval_cost": "4.40",
"prefix_cost": "46.81",
"data_read_per_join": "352"
},
"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": 4,
"filtered": "20.00",
"cost_info": {
"read_cost": "22.00",
"eval_cost": "0.88",
"prefix_cost": "73.21",
"data_read_per_join": "11K"
},
"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 |
9917 |
512M |
9918 |
512M |
9919 |
512M |
9920 |
42,79M |
9921 |
512M |
9922 |
79,475M |
9923 |
79,475M |
9924 |
512M |
9925 |
512M |
9926 |
42,475M |
9927 |
555M |
9928 |
79,475M |
9929 |
79,475M |
9930 |
555M |
9931 |
555M |
9932 |
555M |