Query time 0.00109
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "151.61"
},
"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": 32,
"rows_produced_per_join": 32,
"filtered": "100.00",
"index_condition": "(`portal`.`q_products_categories`.`product_id` in (14849,14850,14851,14852,14853,14855,14858,14860,14861,14862,14875,14880,14881,14894,14933,15229,15284,15285,15288,15519,15712,15713,15726,15772,15778,15837,15866,15867,15868,15872))",
"cost_info": {
"read_cost": "68.41",
"eval_cost": "6.40",
"prefix_cost": "74.81",
"data_read_per_join": "512"
},
"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": 32,
"filtered": "100.00",
"cost_info": {
"read_cost": "32.00",
"eval_cost": "6.40",
"prefix_cost": "113.21",
"data_read_per_join": "512"
},
"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": "32.00",
"eval_cost": "1.28",
"prefix_cost": "151.61",
"data_read_per_join": "16K"
},
"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 |
14849 |
383M |
0 |
14850 |
383M |
0 |
14851 |
383M |
0 |
14852 |
383M |
0 |
14853 |
383M |
0 |
14855 |
383M |
0 |
14858 |
383M |
0 |
14860 |
561M |
|
14861 |
561M |
|
14862 |
561M |
|
14875 |
383M |
0 |
14880 |
383M |
0 |
14881 |
383M |
0 |
14894 |
561M |
|
14933 |
402M |
|
15229 |
383M |
0 |
15284 |
383M |
0 |
15285 |
383M |
0 |
15288 |
402M |
|
15519 |
383M |
0 |
15712 |
402M |
|
15713 |
402M |
|
15726 |
402M |
|
15772 |
383M |
0 |
15778 |
402M |
|
15837 |
402M |
|
15866 |
561M |
|
15867 |
402M |
|
15868 |
402M |
|
15872 |
383M |
0 |