Query time 0.00060
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "130.41"
},
"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": 44,
"rows_produced_per_join": 44,
"filtered": "100.00",
"index_condition": "(`portal`.`q_products_categories`.`product_id` in (9501,9502,9503,9504,9505,9506,9507,9508,9509,9510,9511,9512,9513,9514,9515,9516))",
"cost_info": {
"read_cost": "68.81",
"eval_cost": "8.80",
"prefix_cost": "77.61",
"data_read_per_join": "704"
},
"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": 8,
"filtered": "20.00",
"cost_info": {
"read_cost": "44.00",
"eval_cost": "1.76",
"prefix_cost": "130.41",
"data_read_per_join": "23K"
},
"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 |
9501 |
424,382M |
9502 |
424,382M |
9503 |
424,382M |
9504 |
383M |
9505 |
383M |
9506 |
383M |
9507 |
383M |
9508 |
383M |
9509 |
383M |
9510 |
383M |
9511 |
383M |
9512 |
383M |
9513 |
419M |
9514 |
419M |
9515 |
419M |
9516 |
419M |