Query time 0.00072
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "130.81"
},
"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": 38,
"rows_produced_per_join": 38,
"filtered": "100.00",
"index_condition": "(`portal`.`q_products_categories`.`product_id` in (32447,32448,32450,32451,32452,32453,32454,32455,32456,32457,32458,32460,32461,32462,32463,32465,32466,32467,32468,32469,32471,32472,32473,32474,32475,32476,32478,32479,32480,32481,32482,32483))",
"cost_info": {
"read_cost": "77.61",
"eval_cost": "7.60",
"prefix_cost": "85.21",
"data_read_per_join": "608"
},
"used_columns": [
"product_id",
"category_id",
"link_type"
]
}
},
{
"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": 7,
"filtered": "20.00",
"cost_info": {
"read_cost": "38.00",
"eval_cost": "1.52",
"prefix_cost": "130.81",
"data_read_per_join": "20K"
},
"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 |
32447 |
97M |
32448 |
97M |
32450 |
96M |
32451 |
96M |
32452 |
96M |
32453 |
96M |
32454 |
96M |
32455 |
96M |
32456 |
96M |
32457 |
97M |
32458 |
97M |
32460 |
97M |
32461 |
97M |
32462 |
97M |
32463 |
97M |
32465 |
97M |
32466 |
97M |
32467 |
97M |
32468 |
97M |
32469 |
97M |
32471 |
97M |
32472 |
97M |
32473 |
97M |
32474 |
97M |
32475 |
97M |
32476 |
97M |
32478 |
97M |
32479 |
97M |
32480 |
97M |
32481 |
96M |
32482 |
96M |
32483 |
96M |