Query time 0.00062
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "86.21"
},
"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": 27,
"rows_produced_per_join": 27,
"filtered": "100.00",
"index_condition": "(`portal`.`q_products_categories`.`product_id` in (30750,30751,30752,30753,30754,30755,30756,30757,30758,30759,30760,30761,30762,30763,30764,30765))",
"cost_info": {
"read_cost": "48.41",
"eval_cost": "5.40",
"prefix_cost": "53.81",
"data_read_per_join": "432"
},
"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": 5,
"filtered": "20.00",
"cost_info": {
"read_cost": "27.00",
"eval_cost": "1.08",
"prefix_cost": "86.21",
"data_read_per_join": "14K"
},
"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 |
30750 |
204M |
30751 |
560M |
30752 |
560M |
30753 |
519M |
30754 |
386M |
30755 |
184M |
30756 |
383M |
30757 |
371M |
30758 |
201M |
30759 |
184M |
30760 |
424M |
30761 |
204M |
30762 |
204M |
30763 |
512M |
30764 |
564M |
30765 |
550M |