Query time 0.00074
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "99.21"
},
"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": 32,
"rows_produced_per_join": 32,
"filtered": "100.00",
"index_condition": "(`portal`.`q_products_categories`.`product_id` in (30370,30371,30372,30373,30374,30375,30376,30377,30378,30379,30380,30381,30382,30383,30384,30385))",
"cost_info": {
"read_cost": "54.41",
"eval_cost": "6.40",
"prefix_cost": "60.81",
"data_read_per_join": "512"
},
"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": 6,
"filtered": "20.00",
"cost_info": {
"read_cost": "32.00",
"eval_cost": "1.28",
"prefix_cost": "99.21",
"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 |
30370 |
167M |
30371 |
432M |
30372 |
2M |
30373 |
563M |
30374 |
167M |
30375 |
473,167M |
30376 |
160M |
30377 |
160M |
30378 |
563M |
30379 |
167M |
30380 |
473,167M |
30381 |
2M |
30382 |
167M |
30383 |
597M |
30384 |
383M |
30385 |
375M |