如何用列时间戳默认current_date创建mysql表？

Question

我需要在列CURRENT_DATE()上创建具有默认值的mysql表

我试试

DROP TABLE IF EXISTS `visitors`;
CREATE TABLE `visitors` (
  `id` BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
  `ip` VARCHAR(32) NOT NULL,
  `browser` VARCHAR(500) NOT NULL,
  `version` VARCHAR(500) NOT NULL,
  `platform` ENUM('w','l','m') NOT NULL,
  `date` TIMESTAMP NOT NULL DEFAULT CURRENT_DATE(),
  PRIMARY KEY (`id`),
  UNIQUE KEY `person` (`ip`,`date`)
) ENGINE=INNODB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

但它正在写一个错误

Query: CREATE TABLE `visitors` ( `id` BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT, `ip` VARCHAR(32) NOT NULL, `browser` VARCHAR(500) NO...

Error Code: 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 'CURRENT_DATE() NOT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `person` (`ip`,`date`)
) ENGINE=INNODB AUTO_INCREMENT=1' at line 7

Execution Time : 0 sec
Transfer Time  : 0 sec
Total Time     : 0.063 sec

问题是什么？

我需要仅限日期而不是全职信息...

你能帮助我吗？

Answer 1

使用CURRENT_TIMESTAMP函数而不是CURRENT_DATE()函数

试试这个:

DROP TABLE IF EXISTS `visitors`;
CREATE TABLE `visitors` (
  `id` BIGINT(20) UNSIGNED NOT NULL AUTO_INCREMENT,
  `ip` VARCHAR(32) NOT NULL,
  `browser` VARCHAR(500) NOT NULL,
  `version` VARCHAR(500) NOT NULL,
  `platform` ENUM('w','l','m') NOT NULL,
  `date` TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  PRIMARY KEY (`id`),
  UNIQUE KEY `person` (`ip`,`date`)
) ENGINE=INNODB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;