Query time 0.00094
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "176.41"
},
"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": 38,
"rows_produced_per_join": 38,
"filtered": "100.00",
"index_condition": "(`portal`.`q_products_categories`.`product_id` in (9544,9592,9593,9594,9595,9596,9597,9598,9599,9600,9601,9602,9603,9604,9605,9606,9607,9608,9609,9610,9611,9612,9613,9614,9615,9616,9617,9618,9619,9620,9621,9622))",
"cost_info": {
"read_cost": "77.61",
"eval_cost": "7.60",
"prefix_cost": "85.21",
"data_read_per_join": "608"
},
"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": 38,
"filtered": "100.00",
"cost_info": {
"read_cost": "38.00",
"eval_cost": "7.60",
"prefix_cost": "130.81",
"data_read_per_join": "608"
},
"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": "38.00",
"eval_cost": "1.52",
"prefix_cost": "176.41",
"data_read_per_join": "20K"
},
"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 |
9544 |
191M |
0 |
9592 |
191,195M |
0 |
9593 |
418,195M |
|
9594 |
195,191M |
0 |
9595 |
418,195M |
|
9596 |
418,195M |
|
9597 |
418,195M |
|
9598 |
419M |
|
9599 |
419M |
|
9600 |
191M |
0 |
9601 |
191M |
0 |
9602 |
191M |
0 |
9603 |
418M |
|
9604 |
418M |
|
9605 |
191M |
0 |
9606 |
191M |
0 |
9607 |
418M |
|
9608 |
418M |
|
9609 |
418M |
|
9610 |
418M |
|
9611 |
418M |
|
9612 |
191M |
0 |
9613 |
418M |
|
9614 |
191M |
0 |
9615 |
191M |
0 |
9616 |
191M |
0 |
9617 |
418M |
|
9618 |
418M |
|
9619 |
418M |
|
9620 |
418M |
|
9621 |
191M |
0 |
9622 |
191M |
0 |