Query time 0.00091
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 (16317,16318,16319,16320,16321,16322,16323,16324,16325,16326,16327,16328,16329,16331,16332,16333,16334,16335,16336,16337,16338,16339,16340,16341,16342,16343,16344,16345,16346,16347))",
"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 |
16317 |
252M |
|
16318 |
252M |
|
16319 |
252M |
|
16320 |
252M |
|
16321 |
251M |
|
16322 |
499M |
|
16323 |
252M |
|
16324 |
252M |
|
16325 |
255M |
|
16326 |
251M |
|
16327 |
496M |
|
16328 |
532M |
|
16329 |
256M |
|
16331 |
489M |
|
16332 |
489M |
|
16333 |
489M |
|
16334 |
489M |
|
16335 |
489M |
|
16336 |
489M |
|
16337 |
489M |
|
16338 |
489M |
|
16339 |
489M |
|
16340 |
489M |
|
16341 |
489M |
|
16342 |
489M |
|
16343 |
489M |
|
16344 |
499M |
|
16345 |
499M |
|
16346 |
496M |
|
16347 |
499M |
|