Query time 0.00071
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "84.41"
},
"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": 18,
"rows_produced_per_join": 18,
"filtered": "100.00",
"index_condition": "(`portal`.`q_products_categories`.`product_id` in (38189,38190,38191,38192,38193,38194,38195,38198,38202,38203,38204,38205,38206,38207,38208,38209))",
"cost_info": {
"read_cost": "37.61",
"eval_cost": "3.60",
"prefix_cost": "41.21",
"data_read_per_join": "288"
},
"used_columns": [
"product_id",
"category_id",
"link_type"
]
}
},
{
"table": {
"table_name": "product_position_source",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY",
"pt"
],
"key": "PRIMARY",
"used_key_parts": [
"category_id",
"product_id"
],
"key_length": "6",
"ref": [
"const",
"portal.q_products_categories.product_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 18,
"filtered": "100.00",
"cost_info": {
"read_cost": "18.00",
"eval_cost": "3.60",
"prefix_cost": "62.81",
"data_read_per_join": "288"
},
"used_columns": [
"product_id",
"category_id",
"position"
]
}
},
{
"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": 3,
"filtered": "20.00",
"cost_info": {
"read_cost": "18.00",
"eval_cost": "0.72",
"prefix_cost": "84.41",
"data_read_per_join": "9K"
},
"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 |
position |
38189 |
39M |
|
38190 |
39M |
|
38191 |
39M |
|
38192 |
39M |
|
38193 |
39M |
|
38194 |
39M |
|
38195 |
39M |
|
38198 |
39M |
|
38202 |
5M |
|
38203 |
5M |
|
38204 |
39M |
|
38205 |
5M |
|
38206 |
39M |
|
38207 |
4M |
|
38208 |
4M |
|
38209 |
5M |
|