Query time 0.00070
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "65.41"
},
"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": 19,
"rows_produced_per_join": 19,
"filtered": "100.00",
"index_condition": "(`portal`.`q_products_categories`.`product_id` in (31025,31026,31027,31028,31029,31030,31031,31032,31033,31034,31035,31036,31037,31038,31039,31040))",
"cost_info": {
"read_cost": "38.81",
"eval_cost": "3.80",
"prefix_cost": "42.61",
"data_read_per_join": "304"
},
"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": "19.00",
"eval_cost": "0.76",
"prefix_cost": "65.41",
"data_read_per_join": "10K"
},
"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 |
31025 |
301M |
31026 |
301M |
31027 |
187M |
31028 |
454M |
31029 |
301M |
31030 |
301M |
31031 |
454M |
31032 |
443M |
31033 |
301M |
31034 |
598M |
31035 |
249M |
31036 |
186M |
31037 |
477M |
31038 |
167M |
31039 |
153,455M |
31040 |
233M |