Query time 0.00086
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "185.81"
},
"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": 41,
"rows_produced_per_join": 41,
"filtered": "100.00",
"index_condition": "(`portal`.`q_products_categories`.`product_id` in (8944,8945,8987,9061,9062,9063,9064,9065,9066,9067,9068,9069,9070,9088,9125,9126,9211,9212,9513,9514,9515,9516,9517,9518,9519,9598,9599,9656,9659,9660))",
"cost_info": {
"read_cost": "79.21",
"eval_cost": "8.20",
"prefix_cost": "87.41",
"data_read_per_join": "656"
},
"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": 41,
"filtered": "100.00",
"cost_info": {
"read_cost": "41.00",
"eval_cost": "8.20",
"prefix_cost": "136.61",
"data_read_per_join": "656"
},
"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": 8,
"filtered": "20.00",
"cost_info": {
"read_cost": "41.00",
"eval_cost": "1.64",
"prefix_cost": "185.81",
"data_read_per_join": "21K"
},
"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 |
8944 |
419M |
0 |
8945 |
419M |
0 |
8987 |
419M |
0 |
9061 |
419M |
0 |
9062 |
419M |
0 |
9063 |
419M |
0 |
9064 |
419M |
0 |
9065 |
419M |
0 |
9066 |
419M |
0 |
9067 |
419M |
0 |
9068 |
419M |
0 |
9069 |
419M |
0 |
9070 |
419M |
0 |
9088 |
419M |
0 |
9125 |
419M |
0 |
9126 |
419M |
0 |
9211 |
419M |
0 |
9212 |
419M |
0 |
9513 |
419M |
0 |
9514 |
419M |
0 |
9515 |
419M |
0 |
9516 |
419M |
0 |
9517 |
419M |
0 |
9518 |
419M |
0 |
9519 |
419M |
0 |
9598 |
419M |
0 |
9599 |
419M |
0 |
9656 |
561,419M |
0 |
9659 |
419M |
0 |
9660 |
419M |
0 |