Query time 0.00070
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "60.21"
},
"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": 17,
"rows_produced_per_join": 17,
"filtered": "100.00",
"index_condition": "(`portal`.`q_products_categories`.`product_id` in (8592,8593,8594,8595,8596,8597,8598,8601,8602,8603,8604,8605,8606,8607,8608,8609))",
"cost_info": {
"read_cost": "36.41",
"eval_cost": "3.40",
"prefix_cost": "39.81",
"data_read_per_join": "272"
},
"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": 3,
"filtered": "20.00",
"cost_info": {
"read_cost": "17.00",
"eval_cost": "0.68",
"prefix_cost": "60.21",
"data_read_per_join": "8K"
},
"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 |
8592 |
38M |
8593 |
38M |
8594 |
301M |
8595 |
290M |
8596 |
290M |
8597 |
290M |
8598 |
290M |
8601 |
475,79,42,290M |
8602 |
290M |
8603 |
290M |
8604 |
301M |
8605 |
290M |
8606 |
546,290M |
8607 |
546,290M |
8608 |
301M |
8609 |
546,290M |