#1064，xampp，phpMyAdmin，MYSQL - 为什么 mySQL 语法有错误？

Question

#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 ') VIRTUAL,
  `title_type` VARCHAR(45) NULL DEFAULT null,
  PRIMARY KEY (`id`))' at line 2

这是脚本的一部分：

CREATE TABLE IF NOT EXISTS `sggis`.`maps_type` (
  `id` INT GENERATED ALWAYS AS () VIRTUAL,
  `title_type` VARCHAR(45) NULL DEFAULT 'yandex',
  PRIMARY KEY (`id`)) 
ENGINE = InnoDB;

SQL 说问题出在第二行，但我找不到。 MySQL Workbench.

生成的代码

Answer 1

使用 VIRTUAL 列时，您需要指定表达式

Any legal, deterministic expression which can be calculated is permitted, with the following exceptions:

你的表情是空白的

#1064，xampp，phpMyAdmin，MYSQL - 为什么 mySQL 语法有错误？

#1064, xammp, phpMyAdmin, MYSQL - Why have I an error in mySQL syntax?

mysql

mysql-workbench

mysql-error-1064