Query time 0.00101
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "614.41"
},
"grouping_operation": {
"using_filesort": false,
"nested_loop": [
{
"table": {
"table_name": "cscart_discussion",
"access_type": "range",
"possible_keys": [
"object_id",
"company_id"
],
"key": "object_id",
"used_key_parts": [
"object_id",
"object_type",
"company_id"
],
"key_length": "10",
"rows_examined_per_scan": 64,
"rows_produced_per_join": 64,
"filtered": "100.00",
"index_condition": "((`ea201_francemaqu`.`cscart_discussion`.`company_id` = 1) and (`ea201_francemaqu`.`cscart_discussion`.`object_id` in (10975,5759,1925,11317,10974,11013,11023,11027,11315,11314,11313,11312,11036,11073,11089,11309,11302,10884,11300,11256,11257,11316,10830,11286,11285,11284,11283,3875,11282,10638,10870,11031,11030,10738,11253,11025,11267,11266,11265,11264,11263,11262,11259,11261,10848,10979,11012,11024,11090,11234,11235,11258,11254,11269,10333,11015,11018,11019,11238,11251,11307,11308,11002,10335)) and (`ea201_francemaqu`.`cscart_discussion`.`object_type` = 'P'))",
"cost_info": {
"read_cost": "140.81",
"eval_cost": "12.80",
"prefix_cost": "153.61",
"data_read_per_join": "1K"
},
"used_columns": [
"thread_id",
"object_id",
"object_type",
"type",
"company_id"
]
}
},
{
"table": {
"table_name": "cscart_discussion_posts",
"access_type": "ref",
"possible_keys": [
"thread_id",
"thread_id_2"
],
"key": "thread_id",
"used_key_parts": [
"thread_id"
],
"key_length": "3",
"ref": [
"ea201_francemaqu.cscart_discussion.thread_id"
],
"rows_examined_per_scan": 3,
"rows_produced_per_join": 192,
"filtered": "100.00",
"cost_info": {
"read_cost": "192.00",
"eval_cost": "38.40",
"prefix_cost": "384.01",
"data_read_per_join": "84K"
},
"used_columns": [
"post_id",
"thread_id",
"status"
],
"attached_condition": "<if>(is_not_null_compl(cscart_discussion_posts), (`ea201_francemaqu`.`cscart_discussion_posts`.`status` = 'A'), true)"
}
},
{
"table": {
"table_name": "cscart_discussion_rating",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY",
"thread_id"
],
"key": "PRIMARY",
"used_key_parts": [
"post_id"
],
"key_length": "3",
"ref": [
"ea201_francemaqu.cscart_discussion_posts.post_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 192,
"filtered": "100.00",
"cost_info": {
"read_cost": "192.00",
"eval_cost": "38.40",
"prefix_cost": "614.41",
"data_read_per_join": "3K"
},
"used_columns": [
"rating_value",
"post_id",
"thread_id"
],
"attached_condition": "<if>(is_not_null_compl(cscart_discussion_rating), ((`ea201_francemaqu`.`cscart_discussion_rating`.`thread_id` = `ea201_francemaqu`.`cscart_discussion`.`thread_id`) and (`ea201_francemaqu`.`cscart_discussion_rating`.`rating_value` <> 0)), true)"
}
}
]
}
}
}
Result
product_id |
average_rating |
discussion_type |
discussion_thread_id |
1925 |
5.0000 |
B |
1679 |
3875 |
|
B |
12204 |
5759 |
|
B |
32626 |
10333 |
|
B |
57033 |
10335 |
|
B |
57035 |
10638 |
|
B |
57343 |
10738 |
|
B |
57446 |
10830 |
|
B |
57541 |
10848 |
|
B |
57559 |
10870 |
|
B |
57581 |
10884 |
|
B |
57595 |
10974 |
|
B |
57687 |
10975 |
|
B |
57688 |
10979 |
|
B |
57692 |
11002 |
|
B |
57715 |
11012 |
|
B |
57725 |
11013 |
|
B |
57726 |
11015 |
|
B |
57728 |
11018 |
|
B |
57731 |
11019 |
|
B |
57732 |
11023 |
|
B |
57736 |
11024 |
|
B |
57737 |
11025 |
|
B |
57738 |
11027 |
|
B |
57740 |
11030 |
|
B |
57743 |
11031 |
|
B |
57744 |
11036 |
|
B |
57749 |
11073 |
|
B |
57786 |
11089 |
|
B |
57803 |
11090 |
|
B |
57804 |
11234 |
|
B |
57948 |
11235 |
|
B |
57949 |
11238 |
|
B |
57952 |
11251 |
|
B |
57965 |
11253 |
|
B |
57967 |
11254 |
|
B |
57968 |
11256 |
|
B |
57970 |
11257 |
|
B |
57971 |
11258 |
|
B |
57972 |
11259 |
|
B |
57973 |
11261 |
|
B |
57975 |
11262 |
|
B |
57976 |
11263 |
|
B |
57977 |
11264 |
|
B |
57978 |
11265 |
|
B |
57979 |
11266 |
|
B |
57980 |
11267 |
|
B |
57981 |
11269 |
|
B |
57983 |
11282 |
|
B |
57996 |
11283 |
|
B |
57997 |
11284 |
|
B |
57998 |
11285 |
|
B |
57999 |
11286 |
|
B |
58000 |
11300 |
|
B |
58015 |
11302 |
|
B |
58017 |
11307 |
|
B |
58022 |
11308 |
|
B |
58023 |
11309 |
|
B |
58024 |
11312 |
|
B |
58027 |
11313 |
|
B |
58028 |
11314 |
|
B |
58029 |
11315 |
|
B |
58030 |
11316 |
|
B |
58031 |
11317 |
|
B |
58032 |