Query time 0.00099
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "16.91"
},
"grouping_operation": {
"using_filesort": false,
"nested_loop": [
{
"table": {
"table_name": "cscart_products_categories",
"access_type": "range",
"possible_keys": [
"PRIMARY",
"pt"
],
"key": "pt",
"used_key_parts": [
"product_id"
],
"key_length": "3",
"rows_examined_per_scan": 18,
"rows_produced_per_join": 18,
"filtered": "100.00",
"index_condition": "(`cscartdb`.`cscart_products_categories`.`product_id` in (32019,32119,32177,32142,32153,32036,32195,32199,32164,32121))",
"cost_info": {
"read_cost": "8.81",
"eval_cost": "1.80",
"prefix_cost": "10.61",
"data_read_per_join": "288"
},
"used_columns": [
"product_id",
"category_id",
"link_type"
]
}
},
{
"table": {
"table_name": "cscart_categories",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY",
"c_status",
"p_category_id"
],
"key": "PRIMARY",
"used_key_parts": [
"category_id"
],
"key_length": "3",
"ref": [
"cscartdb.cscart_products_categories.category_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 0,
"filtered": "5.00",
"cost_info": {
"read_cost": "4.50",
"eval_cost": "0.09",
"prefix_cost": "16.91",
"data_read_per_join": "3K"
},
"used_columns": [
"category_id",
"storefront_id",
"usergroup_ids",
"status"
],
"attached_condition": "((`cscartdb`.`cscart_categories`.`storefront_id` in (0,1)) and ((`cscartdb`.`cscart_categories`.`usergroup_ids` = '') or (0 <> find_in_set(0,`cscartdb`.`cscart_categories`.`usergroup_ids`)) or (0 <> find_in_set(1,`cscartdb`.`cscart_categories`.`usergroup_ids`))) and (`cscartdb`.`cscart_categories`.`status` in ('A','H')))"
}
}
]
}
}
}
Result
product_id |
category_ids |
32019 |
959,28M |
32036 |
959,27M |
32119 |
959,27M |
32121 |
959,56M |
32142 |
959,26M |
32153 |
959,26M |
32164 |
959,535M |
32177 |
959,27M |
32195 |
959,27M |
32199 |
959,27M |