如果添加新列到已經存在的表用下面的命令:添加在SQL列總計其他列的值
ALTER TABLE randomquestions
ADD Total AS R1_Number + R2_Number + R3_Number + R4_Number PERSISTED
我得到這個錯誤:
#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AS R1_Number + R2_Number + R3_Number + R4_Number PERSISTED' at line 2
誰能告訴我在哪裏出錯的語法?
這是MySQL還是SQL Server? –
請提供您的表的錯誤信息和DDL – Devart
請確定#1064 - 您的SQL語法錯誤;檢查對應於您的MySQL服務器** ** Microsoft SQL Server **或** MySQL **的手冊。 – lad2025