Query time 0.00100
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "170.61"
},
"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": 37,
"rows_produced_per_join": 37,
"filtered": "100.00",
"index_condition": "(`portal`.`q_products_categories`.`product_id` in (29707,29709,29712,29716,29718,29726,29727,29728,29732,29733,29735,29736,29737,29743,29747,29748,29754,29755,29758,29761,29762,29765,29766,29769,29770,29771,29775,29780,29781,29787))",
"cost_info": {
"read_cost": "74.41",
"eval_cost": "7.40",
"prefix_cost": "81.81",
"data_read_per_join": "592"
},
"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": 37,
"filtered": "100.00",
"cost_info": {
"read_cost": "37.00",
"eval_cost": "7.40",
"prefix_cost": "126.21",
"data_read_per_join": "592"
},
"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": 7,
"filtered": "20.00",
"cost_info": {
"read_cost": "37.00",
"eval_cost": "1.48",
"prefix_cost": "170.61",
"data_read_per_join": "19K"
},
"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 |
29707 |
419M |
|
29709 |
419M |
|
29712 |
419M |
|
29716 |
193M |
|
29718 |
419M |
|
29726 |
204M |
|
29727 |
195M |
|
29728 |
420M |
|
29732 |
419M |
|
29733 |
419M |
|
29735 |
419M |
|
29736 |
419M |
|
29737 |
419M |
|
29743 |
193M |
|
29747 |
419M |
|
29748 |
419M |
|
29754 |
419M |
|
29755 |
193M |
|
29758 |
192M |
|
29761 |
193M |
|
29762 |
420M |
|
29765 |
195M |
|
29766 |
419M |
|
29769 |
204M |
|
29770 |
419M |
|
29771 |
419M |
|
29775 |
419M |
|
29780 |
429M |
|
29781 |
419M |
|
29787 |
419M |
|