Query time 0.00142
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "7.29"
},
"grouping_operation": {
"using_temporary_table": true,
"using_filesort": true,
"cost_info": {
"sort_cost": "0.10"
},
"nested_loop": [
{
"table": {
"table_name": "dp",
"access_type": "index",
"possible_keys": [
"thread_id",
"thread_id_2"
],
"key": "thread_id_2",
"used_key_parts": [
"thread_id",
"status"
],
"key_length": "6",
"rows_examined_per_scan": 19,
"rows_produced_per_join": 1,
"filtered": "10.00",
"using_index": true,
"cost_info": {
"read_cost": "4.42",
"eval_cost": "0.38",
"prefix_cost": "4.80",
"data_read_per_join": "851"
},
"used_columns": [
"post_id",
"thread_id",
"status"
],
"attached_condition": "(`webmarco`.`dp`.`status` = 'A')"
}
},
{
"table": {
"table_name": "cscart_discussion",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY",
"object_id"
],
"key": "PRIMARY",
"used_key_parts": [
"thread_id"
],
"key_length": "3",
"ref": [
"webmarco.dp.thread_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 0,
"filtered": "5.00",
"cost_info": {
"read_cost": "1.90",
"eval_cost": "0.02",
"prefix_cost": "7.08",
"data_read_per_join": "2"
},
"used_columns": [
"thread_id",
"object_id",
"object_type"
],
"attached_condition": "((`webmarco`.`cscart_discussion`.`object_id` in (394196,114756,81595,265003,149755,264991,262367,286468,387085,265175,80451,262401,387100,387101,277549,286472,277552,265004,262376,265174,277550,286478,277548,387099,149820,81523,286465,277547,387097,387102,149750,286467,339527,264986,286475,391790,387103,286479,359819,286473,286469,391787,391791,31800,286466,435216,286470,391792,286471,277551,391739,286474,286,391740,262374,381645,359629,264695,262391,535,359628,381653,391793,381646,381643,391795,392213,225059,387091,391794,387043,264694,262397,264699,381647,391788,391797,381644,339513,391796,282476,151903,381642,81654,387038,339519,81637,282477,264697,264700,339510,339508,265002,339518,339713,339505,265235,339525,81590,262396)) and (`webmarco`.`cscart_discussion`.`object_type` = 'P'))"
}
},
{
"table": {
"table_name": "p",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY",
"age_verification",
"status",
"idx_parent_product_id",
"idx_master_product_id"
],
"key": "PRIMARY",
"used_key_parts": [
"product_id"
],
"key_length": "3",
"ref": [
"webmarco.cscart_discussion.object_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 0,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "0.10",
"eval_cost": "0.02",
"prefix_cost": "7.19",
"data_read_per_join": "760"
},
"used_columns": [
"product_id"
]
}
}
]
}
}
}