Query time 0.00103
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "6.31"
},
"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": 6,
"rows_produced_per_join": 6,
"filtered": "100.00",
"index_condition": "(`s2cart`.`cscart_products_categories`.`product_id` in (276546,276548,276550,276552,276572,276574))",
"cost_info": {
"read_cost": "3.61",
"eval_cost": "0.60",
"prefix_cost": "4.21",
"data_read_per_join": "96"
},
"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": [
"s2cart.cscart_products_categories.category_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 0,
"filtered": "5.00",
"cost_info": {
"read_cost": "1.50",
"eval_cost": "0.03",
"prefix_cost": "6.31",
"data_read_per_join": "1K"
},
"used_columns": [
"category_id",
"usergroup_ids",
"status",
"storefront_id"
],
"attached_condition": "((`s2cart`.`cscart_categories`.`storefront_id` in (0,3)) and ((`s2cart`.`cscart_categories`.`usergroup_ids` = '') or (0 <> find_in_set(0,`s2cart`.`cscart_categories`.`usergroup_ids`)) or (0 <> find_in_set(1,`s2cart`.`cscart_categories`.`usergroup_ids`))) and (`s2cart`.`cscart_categories`.`status` in ('A','H')))"
}
}
]
}
}
}
Result
product_id |
category_ids |
276546 |
4936M |
276548 |
4936M |
276550 |
4936M |
276552 |
4936M |
276572 |
4936M |
276574 |
4936M |