Query time 0.00065
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "34.67"
},
"grouping_operation": {
"using_temporary_table": true,
"using_filesort": true,
"cost_info": {
"sort_cost": "1.21"
},
"nested_loop": [
{
"table": {
"table_name": "cscart_ult_objects_sharing",
"access_type": "index",
"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"share_object_id",
"share_company_id",
"share_object_type"
],
"key_length": "159",
"rows_examined_per_scan": 144,
"rows_produced_per_join": 1,
"filtered": "1.00",
"using_index": true,
"cost_info": {
"read_cost": "31.45",
"eval_cost": "0.29",
"prefix_cost": "31.73",
"data_read_per_join": "230"
},
"used_columns": [
"share_company_id",
"share_object_id",
"share_object_type"
],
"attached_condition": "((`ea201_diorama`.`cscart_ult_objects_sharing`.`share_company_id` = 1) and (`ea201_diorama`.`cscart_ult_objects_sharing`.`share_object_type` = 'pages'))"
}
},
{
"table": {
"table_name": "cscart_pages",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY",
"parent_id"
],
"key": "PRIMARY",
"used_key_parts": [
"page_id"
],
"key_length": "3",
"ref": [
"ea201_diorama.cscart_ult_objects_sharing.share_object_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 1,
"filtered": "84.21",
"index_condition": "(`ea201_diorama`.`cscart_ult_objects_sharing`.`share_object_id` = `ea201_diorama`.`cscart_pages`.`page_id`)",
"cost_info": {
"read_cost": "1.44",
"eval_cost": "0.24",
"prefix_cost": "33.46",
"data_read_per_join": "2K"
},
"used_columns": [
"page_id",
"parent_id"
],
"attached_condition": "(`ea201_diorama`.`cscart_pages`.`parent_id` in (54,106,66,42,108,15,79,16,21,62,56,50,53,52,51,38,47,48,49,78,31,43,27,12,63,65,77,73,45,44,23,25,22,20,19,26,28,40,41,109,32,34,33,103))"
}
}
]
}
}
}
Result
parent_id |
children |
12 |
14 |
31 |
2 |
38 |
3 |
50 |
3 |
56 |
4 |