Query time 0.00071
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "83.61"
},
"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": 26,
"rows_produced_per_join": 26,
"filtered": "100.00",
"index_condition": "(`portal`.`q_products_categories`.`product_id` in (30354,30355,30356,30357,30358,30359,30360,30361,30362,30363,30364,30365,30366,30367,30368,30369))",
"cost_info": {
"read_cost": "47.21",
"eval_cost": "5.20",
"prefix_cost": "52.41",
"data_read_per_join": "416"
},
"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": 5,
"filtered": "20.00",
"cost_info": {
"read_cost": "26.00",
"eval_cost": "1.04",
"prefix_cost": "83.61",
"data_read_per_join": "13K"
},
"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 |
30354 |
576M |
30355 |
418M |
30356 |
384M |
30357 |
401M |
30358 |
401M |
30359 |
428M |
30360 |
234M |
30361 |
233M |
30362 |
275M |
30363 |
167M |
30364 |
596M |
30365 |
266M |
30366 |
537M |
30367 |
432M |
30368 |
185M |
30369 |
167M |