{
"query_block": {
"select_id": 1,
"cost_info": {
"query_cost": "5.87"
},
"table": {
"table_name": "cscart_product_review_prepared_data",
"access_type": "ALL",
"possible_keys": [
"PRIMARY"
],
"rows_examined_per_scan": 19,
"rows_produced_per_join": 9,
"filtered": "47.37",
"cost_info": {
"read_cost": "4.07",
"eval_cost": "1.80",
"prefix_cost": "5.87",
"data_read_per_join": "144"
},
"used_columns": [
"product_id",
"storefront_id",
"average_rating",
"reviews_count"
],
"attached_condition": "((`webmarco`.`cscart_product_review_prepared_data`.`storefront_id` = 0) and (`webmarco`.`cscart_product_review_prepared_data`.`product_id` in (271483,271478,271479,271480,271481,271482,271486,271485,271484)))"
}
}
}