Query time 0.00109
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "151.61"
},
"grouping_operation": {
"using_filesort": false,
"nested_loop": [
{
"table": {
"table_name": "q_products_categories",
"access_type": "range",
"possible_keys": [
"PRIMARY",
"pt"
],
"key": "pt",
"used_key_parts": [
"product_id"
],
"key_length": "3",
"rows_examined_per_scan": 32,
"rows_produced_per_join": 32,
"filtered": "100.00",
"index_condition": "(`portal`.`q_products_categories`.`product_id` in (51125,51103,51099,51094,51078,40981,40982,40983,40984,40985,40986,40987,40988,40989,40990,40991,40992,40993,40994,40995,40996,40997,40998,40999,41000,41001,41002,41003,41004,41005))",
"cost_info": {
"read_cost": "68.41",
"eval_cost": "6.40",
"prefix_cost": "74.81",
"data_read_per_join": "512"
},
"used_columns": [
"product_id",
"category_id",
"link_type"
]
}
},
{
"table": {
"table_name": "product_position_source",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY",
"pt"
],
"key": "PRIMARY",
"used_key_parts": [
"category_id",
"product_id"
],
"key_length": "6",
"ref": [
"const",
"portal.q_products_categories.product_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 32,
"filtered": "100.00",
"cost_info": {
"read_cost": "32.00",
"eval_cost": "6.40",
"prefix_cost": "113.21",
"data_read_per_join": "512"
},
"used_columns": [
"product_id",
"category_id",
"position"
]
}
},
{
"table": {
"table_name": "q_categories",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY",
"c_status",
"p_category_id"
],
"key": "PRIMARY",
"used_key_parts": [
"category_id"
],
"key_length": "3",
"ref": [
"portal.q_products_categories.category_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 6,
"filtered": "20.00",
"cost_info": {
"read_cost": "32.00",
"eval_cost": "1.28",
"prefix_cost": "151.61",
"data_read_per_join": "16K"
},
"used_columns": [
"category_id",
"usergroup_ids",
"status"
],
"attached_condition": "(((`portal`.`q_categories`.`usergroup_ids` = '') or find_in_set(0,`portal`.`q_categories`.`usergroup_ids`) or find_in_set(1,`portal`.`q_categories`.`usergroup_ids`)) and (`portal`.`q_categories`.`status` in ('A','H')))"
}
}
]
}
}
}
Result
product_id |
category_ids |
position |
40981 |
94M |
|
40982 |
94M |
|
40983 |
94M |
|
40984 |
94M |
|
40985 |
94M |
|
40986 |
94M |
|
40987 |
92M |
|
40988 |
92M |
|
40989 |
94M |
|
40990 |
92M |
|
40991 |
92M |
|
40992 |
94M |
|
40993 |
94M |
|
40994 |
94M |
|
40995 |
94M |
|
40996 |
92M |
|
40997 |
92M |
|
40998 |
92M |
|
40999 |
92M |
|
41000 |
92M |
|
41001 |
92M |
|
41002 |
94M |
|
41003 |
94M |
|
41004 |
92M |
|
41005 |
92M |
|
51078 |
91M |
0 |
51094 |
91M |
0 |
51099 |
91M |
0 |
51103 |
91M |
0 |
51125 |
91M |
0 |