Query time 0.00078
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "29.83"
},
"grouping_operation": {
"using_filesort": false,
"nested_loop": [
{
"table": {
"table_name": "cscart_products_categories",
"access_type": "range",
"possible_keys": [
"PRIMARY",
"link_type",
"pt"
],
"key": "pt",
"used_key_parts": [
"product_id"
],
"key_length": "3",
"rows_examined_per_scan": 18,
"rows_produced_per_join": 18,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "4.63",
"eval_cost": "3.60",
"prefix_cost": "8.23",
"data_read_per_join": "288"
},
"used_columns": [
"product_id",
"category_id",
"link_type"
],
"attached_condition": "(`webmarco`.`cscart_products_categories`.`product_id` in (81948,149025,149026,149027,149028,149029,149030,149031,149032,149033,149034,149035,149036,149037,149038,149039,149040,149041))"
}
},
{
"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": [
"webmarco.cscart_products_categories.category_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 0,
"filtered": "5.00",
"cost_info": {
"read_cost": "18.00",
"eval_cost": "0.18",
"prefix_cost": "29.83",
"data_read_per_join": "5K"
},
"used_columns": [
"category_id",
"usergroup_ids",
"status",
"storefront_id"
],
"attached_condition": "((`webmarco`.`cscart_categories`.`storefront_id` in (0,1)) and ((`webmarco`.`cscart_categories`.`usergroup_ids` = '') or find_in_set(0,`webmarco`.`cscart_categories`.`usergroup_ids`) or find_in_set(1,`webmarco`.`cscart_categories`.`usergroup_ids`)) and (`webmarco`.`cscart_categories`.`status` in ('A','H')))"
}
}
]
}
}
}
Result
product_id |
category_ids |
81948 |
2904M |
149025 |
2904M |
149026 |
2904M |
149027 |
2904M |
149028 |
2904M |
149029 |
2904M |
149030 |
2904M |
149031 |
2904M |
149032 |
2904M |
149033 |
2904M |
149034 |
2904M |
149035 |
2904M |
149036 |
2904M |
149037 |
2904M |
149038 |
2904M |
149039 |
2904M |
149040 |
2904M |
149041 |
2904M |