mysql - 生成的存储过程失败

Question

这是代码

CREATE TABLE `church` (
  `ID` int(10) UNSIGNED NOT NULL,
  `StudentID` int(11) NOT NULL,
  `semesterID` int(11) NOT NULL,
  `attendedWed` int(11) NOT NULL,
  `attendedFri` int(11) NOT NULL,
  `attendedSabM` int(11) NOT NULL,
  `attendedSabE` int(11) NOT NULL,
  `ChurchScore` double(10,2) GENERATED ALWAYS AS ((((((`attendedWed` + `attendedFri`) + `attendedSabM`) + `attendedSabE`) * 100) / 60)) STORED
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

这是错误

Operation failed: There was an error while applying the SQL script to the database. Executing: ALTER TABLE citizenshipgroup3.church CHANGE COLUMN ChurchScore ChurchScore DOUBLE(10,2) NULL DEFAULT attendedWed ;

ERROR 1064: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'attendedWed' at line 2 SQL Statement: ALTER TABLE citizenshipgroup3.church CHANGE COLUMN ChurchScore ChurchScore DOUBLE(10,2) NULL DEFAULT attendedWed

Answer 1

你的语法没问题。问题是 MySQL 直到 5.7 才支持生成的列。您可能使用的是早期版本。

可能最简单的解决方案是使用 View 进行计算。