我了解如何使用MariaDB (支持与MySQL相同的语法)添加生成的列,并使用简单的算术运算对此表进行了添加。42000]: (conn=28594) You have an error in your SQL syntax; check the manual that corresponds to your MariaDB在CREATE TABLE中: `DateExpected` date DEFAULT NULL,
`Age` int(11) DEFAULT NULL, 替换为: AS (DATE_SUB('1998s