Query time 0.00097
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "159.21"
},
"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": 34,
"rows_produced_per_join": 34,
"filtered": "100.00",
"index_condition": "(`portal`.`q_products_categories`.`product_id` in (50381,50382,50383,50385,50386,50387,50388,50389,50390,50391,50392,50393,50232,50240,50310,50308,50283,50301,50280,50291,50272,50276,50269,50312,50313,50314,50315,50316,50317,50318))",
"cost_info": {
"read_cost": "70.81",
"eval_cost": "6.80",
"prefix_cost": "77.61",
"data_read_per_join": "544"
},
"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": 34,
"filtered": "100.00",
"cost_info": {
"read_cost": "34.00",
"eval_cost": "6.80",
"prefix_cost": "118.41",
"data_read_per_join": "544"
},
"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": "34.00",
"eval_cost": "1.36",
"prefix_cost": "159.21",
"data_read_per_join": "17K"
},
"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 |
50232 |
9M |
|
50240 |
9M |
|
50269 |
9M |
|
50272 |
9M |
|
50276 |
9M |
|
50280 |
9M |
|
50283 |
9M |
|
50291 |
9M |
|
50301 |
9M |
|
50308 |
9M |
|
50310 |
9M |
|
50312 |
9M |
|
50313 |
9M |
|
50314 |
9M |
|
50315 |
9M |
|
50316 |
9M |
|
50317 |
9M |
|
50318 |
9M |
|
50381 |
9M |
|
50382 |
9M |
|
50383 |
9M |
|
50385 |
9M |
|
50386 |
9M |
|
50387 |
9M |
|
50388 |
9M |
|
50389 |
9M |
|
50390 |
9M |
|
50391 |
9M |
|
50392 |
9M |
|
50393 |
9M |
|