SQL：同時使用 SUM 和 CAST

Question

下面是一個查詢，用於顯示 Review 表中的列，並將子評分平均為主評分。 目前，平均評論分數將類似於 7.40000000。 有什么辦法可以同時使用 cast 和 sum 嗎？ 理想情況下，我想將其轉換為一位小數，這樣它只會顯示 7.4。 我試圖根據我看到的其他答案來編輯我的查詢，但我似乎無法讓它工作。

SELECT Review_ID, Customer_ID, Property, Room, Order_ID, 
        Date_of_Stay,Customer_Country, 
        SUM((Rating_Cleanliness+Rating_Comfort+Rating_Location+Rating_Staff+Rating_Value)/5) AS Review_Score
FROM `PCT_Review`
GROUP BY Review_ID;

非常感謝。

Answer 1

我想你可以一起使用它們

SELECT Review_ID, 
       Customer_ID, 
       Property, 
       Room, 
       Order_ID, 
       Date_of_Stay,
       Customer_Country,cast(SUM((Rating_Cleanliness+Rating_Comfort+Rating_Location+Rating_Staff+Rating_Value)/5)  as decimal (10,1)) 
       AS Review_Score
FROM `PCT_Review`
GROUP BY Review_ID, 
         Customer_ID, 
         Property, 
         Room, 
         Order_ID, 
         Date_of_Stay,
         Customer_Country;