Query time 0.00122
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "48.41"
},
"grouping_operation": {
"using_filesort": false,
"nested_loop": [
{
"table": {
"table_name": "cscart_products_categories",
"access_type": "range",
"possible_keys": [
"PRIMARY",
"pt"
],
"key": "pt",
"used_key_parts": [
"product_id"
],
"key_length": "3",
"rows_examined_per_scan": 14,
"rows_produced_per_join": 14,
"filtered": "100.00",
"index_condition": "(`eshopuga_upgr_4122`.`cscart_products_categories`.`product_id` in (802,856,639,645,653,655,657,663,671,674,682,691))",
"cost_info": {
"read_cost": "28.81",
"eval_cost": "2.80",
"prefix_cost": "31.61",
"data_read_per_join": "224"
},
"used_columns": [
"product_id",
"category_id",
"link_type"
]
}
},
{
"table": {
"table_name": "cscart_categories",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY",
"c_status",
"p_category_id"
],
"key": "PRIMARY",
"used_key_parts": [
"category_id"
],
"key_length": "3",
"ref": [
"eshopuga_upgr_4122.cscart_products_categories.category_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 0,
"filtered": "5.00",
"cost_info": {
"read_cost": "14.00",
"eval_cost": "0.14",
"prefix_cost": "48.41",
"data_read_per_join": "1K"
},
"used_columns": [
"category_id",
"company_id",
"usergroup_ids",
"status"
],
"attached_condition": "((`eshopuga_upgr_4122`.`cscart_categories`.`company_id` = 1) and ((`eshopuga_upgr_4122`.`cscart_categories`.`usergroup_ids` = '') or find_in_set(0,`eshopuga_upgr_4122`.`cscart_categories`.`usergroup_ids`) or find_in_set(1,`eshopuga_upgr_4122`.`cscart_categories`.`usergroup_ids`)) and (`eshopuga_upgr_4122`.`cscart_categories`.`status` in ('A','H')))"
}
}
]
}
}
}
Result
product_id |
category_ids |
639 |
455M |
645 |
455M |
653 |
455M |
655 |
455M |
657 |
455M |
663 |
423M |
671 |
427M |
674 |
428M |
682 |
428M |
691 |
428M |
802 |
432,427M |
856 |
446,425M |