Query time 0.00091
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "155.41"
},
"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 (41308,41309,41310,41311,41312,41313,41314,41315,41317,41318,41319,41320,41321,41322,41323,41324,41325,41326,41327,41328,41329,41330,41331,41332,41333,41334,41335,41336,41337,41338))",
"cost_info": {
"read_cost": "69.61",
"eval_cost": "6.60",
"prefix_cost": "76.21",
"data_read_per_join": "528"
},
"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": 33,
"filtered": "100.00",
"cost_info": {
"read_cost": "33.00",
"eval_cost": "6.60",
"prefix_cost": "115.81",
"data_read_per_join": "528"
},
"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": "33.00",
"eval_cost": "1.32",
"prefix_cost": "155.41",
"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 |
41308 |
93M |
|
41309 |
93M |
|
41310 |
93M |
|
41311 |
93M |
|
41312 |
93M |
|
41313 |
93M |
|
41314 |
93M |
|
41315 |
93M |
|
41317 |
93M |
|
41318 |
93M |
|
41319 |
92M |
|
41320 |
93M |
|
41321 |
93M |
|
41322 |
93M |
|
41323 |
93M |
|
41324 |
93M |
|
41325 |
93M |
|
41326 |
93M |
|
41327 |
93M |
|
41328 |
93M |
|
41329 |
93M |
|
41330 |
93M |
|
41331 |
93M |
|
41332 |
94M |
|
41333 |
93M |
|
41334 |
93M |
|
41335 |
93M |
|
41336 |
93M |
|
41337 |
93M |
|
41338 |
93M |
|