Query time 0.00093
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "147.81"
},
"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": 31,
"rows_produced_per_join": 31,
"filtered": "100.00",
"index_condition": "(`portal`.`q_products_categories`.`product_id` in (16250,16253,16257,16259,16260,16263,16266,16267,16268,16269,16270,16271,16274,16275,16295,16296,16299,16300,16302,16303,16304,16305,16306,16310,16311,16312,16313,16314,16315,16316))",
"cost_info": {
"read_cost": "67.21",
"eval_cost": "6.20",
"prefix_cost": "73.41",
"data_read_per_join": "496"
},
"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": 31,
"filtered": "100.00",
"cost_info": {
"read_cost": "31.00",
"eval_cost": "6.20",
"prefix_cost": "110.61",
"data_read_per_join": "496"
},
"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": 6,
"filtered": "20.00",
"cost_info": {
"read_cost": "31.00",
"eval_cost": "1.24",
"prefix_cost": "147.81",
"data_read_per_join": "16K"
},
"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 |
16250 |
255M |
|
16253 |
496M |
|
16257 |
255M |
|
16259 |
255M |
|
16260 |
583,436M |
|
16263 |
255M |
|
16266 |
255M |
|
16267 |
255M |
|
16268 |
255M |
|
16269 |
255M |
|
16270 |
436M |
|
16271 |
579M |
|
16274 |
255M |
|
16275 |
255M |
|
16295 |
255M |
|
16296 |
436M |
|
16299 |
436M |
|
16300 |
255M |
|
16302 |
255M |
|
16303 |
255M |
|
16304 |
255M |
|
16305 |
255M |
|
16306 |
255M |
|
16310 |
496M |
|
16311 |
489M |
|
16312 |
252M |
|
16313 |
252M |
|
16314 |
252M |
|
16315 |
252M |
|
16316 |
252M |
|