Query time 0.00096
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "218.21"
},
"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": 49,
"rows_produced_per_join": 49,
"filtered": "100.00",
"index_condition": "(`portal`.`q_products_categories`.`product_id` in (13593,13601,14240,14241,14242,14243,14244,14245,14246,14247,14248,14249,14250,14251,14252,14253,14254,14255,14256,14257,14258,14259,14260,14261,14263,14264,14265,14266,14267,14268,14269,14270))",
"cost_info": {
"read_cost": "90.81",
"eval_cost": "9.80",
"prefix_cost": "100.61",
"data_read_per_join": "784"
},
"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": 49,
"filtered": "100.00",
"cost_info": {
"read_cost": "49.00",
"eval_cost": "9.80",
"prefix_cost": "159.41",
"data_read_per_join": "784"
},
"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": 9,
"filtered": "20.00",
"cost_info": {
"read_cost": "49.00",
"eval_cost": "1.96",
"prefix_cost": "218.21",
"data_read_per_join": "25K"
},
"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 |
13593 |
298M |
0 |
13601 |
298M |
0 |
14240 |
298M |
0 |
14241 |
298M |
0 |
14242 |
298M |
0 |
14243 |
298M |
0 |
14244 |
298M |
0 |
14245 |
298M |
0 |
14246 |
298M |
0 |
14247 |
298M |
0 |
14248 |
298M |
0 |
14249 |
298M |
0 |
14250 |
298M |
0 |
14251 |
298M |
0 |
14252 |
298M |
0 |
14253 |
298M |
0 |
14254 |
298M |
0 |
14255 |
298M |
0 |
14256 |
298M |
0 |
14257 |
298M |
0 |
14258 |
298M |
0 |
14259 |
298M |
0 |
14260 |
298M |
0 |
14261 |
298M |
0 |
14263 |
298M |
0 |
14264 |
298M |
0 |
14265 |
298M |
0 |
14266 |
298M |
0 |
14267 |
298M |
0 |
14268 |
298M |
0 |
14269 |
298M |
0 |
14270 |
298M |
0 |