Query time 0.00040
JSON explain
{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "2.40"
},
"ordering_operation": {
"using_filesort": true,
"grouping_operation": {
"using_temporary_table": true,
"using_filesort": false,
"nested_loop": [
{
"table": {
"table_name": "cscart_tag_links",
"access_type": "ref",
"possible_keys": [
"PRIMARY",
"tag_id",
"ids"
],
"key": "PRIMARY",
"used_key_parts": [
"object_type",
"object_id"
],
"key_length": "6",
"ref": [
"const",
"const"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 1,
"filtered": "100.00",
"using_index": true,
"cost_info": {
"read_cost": "1.00",
"eval_cost": "0.20",
"prefix_cost": "1.20",
"data_read_per_join": "16"
},
"used_columns": [
"tag_id",
"object_type",
"object_id"
],
"attached_condition": "(`ea201_francemaqu`.`cscart_tag_links`.`tag_id` is not null)"
}
},
{
"table": {
"table_name": "cscart_tags",
"access_type": "eq_ref",
"possible_keys": [
"PRIMARY"
],
"key": "PRIMARY",
"used_key_parts": [
"tag_id"
],
"key_length": "3",
"ref": [
"ea201_francemaqu.cscart_tag_links.tag_id"
],
"rows_examined_per_scan": 1,
"rows_produced_per_join": 0,
"filtered": "5.00",
"cost_info": {
"read_cost": "1.00",
"eval_cost": "0.01",
"prefix_cost": "2.40",
"data_read_per_join": "39"
},
"used_columns": [
"tag_id",
"tag",
"status",
"company_id"
],
"attached_condition": "((`ea201_francemaqu`.`cscart_tags`.`company_id` = 1) and (`ea201_francemaqu`.`cscart_tags`.`status` = 'A'))"
}
}
]
}
}
}
}