Query time 0.00069
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 (31089,31090,31091,31092,31093,31094,31095,31096,31097,31098,31099,31100,31101,31102,31103,31104))",
"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 |
31089 |
183M |
31090 |
276M |
31091 |
179M |
31092 |
148M |
31093 |
2M |
31094 |
159M |
31095 |
471M |
31096 |
166M |
31097 |
167M |
31098 |
64M |
31099 |
166M |
31100 |
276M |
31101 |
454M |
31102 |
455M |
31103 |
296M |
31104 |
166M |