Query time 0.00070
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "117.81"
},
"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": 33,
"rows_produced_per_join": 33,
"filtered": "100.00",
"index_condition": "(`portal`.`q_products_categories`.`product_id` in (41238,41239,41240,41241,41242,41243,41244,41245,41246,41247,41248,41249,41250,41251,41252,41253,41254,41255,41256,41257,41258,41259,41260,41261,41262,41263,41264,41265,41266,41267,41268,41269))",
"cost_info": {
"read_cost": "71.61",
"eval_cost": "6.60",
"prefix_cost": "78.21",
"data_read_per_join": "528"
},
"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": "33.00",
"eval_cost": "1.32",
"prefix_cost": "117.81",
"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 |
41238 |
93M |
41239 |
93M |
41240 |
93M |
41241 |
93M |
41242 |
93M |
41243 |
93M |
41244 |
93M |
41245 |
93M |
41246 |
93M |
41247 |
93M |
41248 |
93M |
41249 |
93M |
41250 |
93M |
41251 |
93M |
41252 |
93M |
41253 |
93M |
41254 |
93M |
41255 |
93M |
41256 |
93M |
41257 |
92M |
41258 |
94M |
41259 |
94M |
41260 |
93M |
41261 |
93M |
41262 |
93M |
41263 |
93M |
41264 |
93M |
41265 |
93M |
41266 |
93M |
41267 |
91M |
41268 |
94M |
41269 |
93M |