Query time 0.00076
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "68.01"
},
"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": 20,
"rows_produced_per_join": 20,
"filtered": "100.00",
"index_condition": "(`portal`.`q_products_categories`.`product_id` in (10515,10516,10334,10335,10341,10347,10350,10353,10355,10356,10360,10362,10363,10364,10365,10366))",
"cost_info": {
"read_cost": "40.01",
"eval_cost": "4.00",
"prefix_cost": "44.01",
"data_read_per_join": "320"
},
"used_columns": [
"product_id",
"category_id",
"link_type"
]
}
},
{
"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": 4,
"filtered": "20.00",
"cost_info": {
"read_cost": "20.00",
"eval_cost": "0.80",
"prefix_cost": "68.01",
"data_read_per_join": "10K"
},
"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 |
10334 |
124M |
10335 |
532M |
10341 |
206M |
10347 |
364,139M |
10350 |
498M |
10353 |
201M |
10355 |
520M |
10356 |
37M |
10360 |
37M |
10362 |
71,37M |
10363 |
37M |
10364 |
37M |
10365 |
526M |
10366 |
206M |
10515 |
473M |
10516 |
261,388M |