Query time 0.00107
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "123.61"
},
"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": 36,
"rows_produced_per_join": 36,
"filtered": "100.00",
"index_condition": "(`portal`.`q_products_categories`.`product_id` in (34232,34233,34234,34235,34236,34237,34238,34239,34241,34242,34243,34245,34246,34247,34248,34249,34250,34251,34252,34253,34254,34255,34256,34257,34258,34259,34260,34261,34262,34263))",
"cost_info": {
"read_cost": "73.21",
"eval_cost": "7.20",
"prefix_cost": "80.41",
"data_read_per_join": "576"
},
"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": 7,
"filtered": "20.00",
"cost_info": {
"read_cost": "36.00",
"eval_cost": "1.44",
"prefix_cost": "123.61",
"data_read_per_join": "19K"
},
"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 |
34232 |
194M |
34233 |
586M |
34234 |
145M |
34235 |
586M |
34236 |
586M |
34237 |
586M |
34238 |
145M |
34239 |
131,130M |
34241 |
419M |
34242 |
142M |
34243 |
140M |
34245 |
586M |
34246 |
10M |
34247 |
10M |
34248 |
202M |
34249 |
132M |
34250 |
132M |
34251 |
366M |
34252 |
366M |
34253 |
366M |
34254 |
366M |
34255 |
134M |
34256 |
591M |
34257 |
591M |
34258 |
590M |
34259 |
590M |
34260 |
134M |
34261 |
586M |
34262 |
11M |
34263 |
139M |