Query time 0.00203
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,
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"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"
],
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"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 (396013,396014,396015,396016,396017,396044,396045,396046,396047,396048,396049,396050,396052,396053,396054,396055,396056,396057,396065,396066,396067,396074,396075,396076,396077,396078,396079,396080,396081,396082,396083,396084,396085,414323,414324,414325,414326,414327,414328,414329,414330,414331,414332,414333,414334,414335,414336,414337,414338,414339,414340,414341,414360,414361,414362,414363,414364,414365,414366,414393,414394,414395,414396,414397,414398,414399,414401,414402,414403,414404,414405,414406,414407,414415,414416,414417,414418,414419,414420,414421,414429,414430,414431,414432,414433,414434,414435,414459,414460,414461,414462,414463,414464,414465,414468,414470,414471,414472,414473,414474,414475,414476,414488,414491,414492,414493,414494,414495,414496,414514,414516,414517,414518,414519,414520,414521,431514,431515,431516,431517,431518,431519,431520,431521,431522,431523,431524,431525,431526,431527,431528,431529,431530,431531,431532,431533,431534,431535,431536,431537,431552,431553,431554,431555,431556,431557,431558,431559,431560,431570,431571,431572,431573,431574,431575,431576,431577,431578,431687,431688,431689,431690,431691,431692,431693,431694,431695,431696,431697,431698,431699,431700,431701,431702,431703,431704,431705,431706,431707,431708,431709,431710,431711,431712,431713,431714,431715,431716,431717,431718,431719,431720,431721,431722,431723,431724,431725,431726,431727,431728,431729,431730,431731,431732,431733,431743,431744,431745,431746,431747,431748,431749,431750,431751,431752,431753,431754,431755,431756,431757,431758,431759,431760,431761,431762,431763,431764,431765,431766,431776,431777,431778,431779,431780,431781,431782)) and (`webmarco`.`cscart_discussion`.`object_type` = 'P'))"
}
},
{
"table": {
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"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"
]
}
}
]
}
}
}