mysql - 简单sql建表语法错误

Question

这可能会以反对票告终，但由于森林，我看不到树木:

运行此 sql 查询:

CREATE TABLE `fontFamilies` (
  `id` INTEGER NULL AUTO_INCREMENT DEFAULT NULL,
  `name` VARCHAR NOT NULL DEFAULT 'NULL',
  `designer` INTEGER NULL,
  `firstLaunch` TIMESTAMP NULL DEFAULT NULL,
  `lastUpdate` TIMESTAMP NULL DEFAULT NULL,
  PRIMARY KEY (`id`)
); 

我在 http://sqlfiddle.com/ 中收到以下错误

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 'NOT NULL DEFAULT 'NULL',
  `designer` INTEGER NULL,
  `firstLaunch` TIMESTAMP NU' at line 3

是什么导致了这个错误？

Answer 1

SQLFiddle 使用 mysql。尝试设置 varchar 的大小:

CREATE TABLE `fontFamilies` (
  `id` INTEGER NULL AUTO_INCREMENT DEFAULT NULL,
  `name` VARCHAR(100) NOT NULL DEFAULT 'NULL',
  `designer` INTEGER NULL,
  `firstLaunch` TIMESTAMP NULL DEFAULT NULL,
  `lastUpdate` TIMESTAMP NULL DEFAULT NULL,
  PRIMARY KEY (`id`)
); 

您还可以将 insert 命令添加到同一窗口:

insert into `fontFamilies` values(217,'name',217,'1992-10-10 10:10:10','1992-10-10 10:10:10')