Query time 0.00064
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "75.81"
},
"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": 23,
"rows_produced_per_join": 23,
"filtered": "100.00",
"index_condition": "(`portal`.`q_products_categories`.`product_id` in (9120,9121,9122,9123,9124,9125,9126,9127,9128,9129,9130,9131,9132,9133,9134,9135))",
"cost_info": {
"read_cost": "43.61",
"eval_cost": "4.60",
"prefix_cost": "48.21",
"data_read_per_join": "368"
},
"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": "23.00",
"eval_cost": "0.92",
"prefix_cost": "75.81",
"data_read_per_join": "12K"
},
"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 |
9120 |
199M |
9121 |
428,199M |
9122 |
199,428M |
9123 |
199,193M |
9124 |
418M |
9125 |
419M |
9126 |
419M |
9127 |
442,548M |
9128 |
548,442M |
9129 |
548,442M |
9130 |
427M |
9131 |
282M |
9132 |
282M |
9133 |
282M |
9134 |
282M |
9135 |
282M |