mysql - 执行查询时出现 SQL 错误

Question

在分析过程中发现了 4 个错误。

Ending quote ' was expected. (near "" at position 510)

A comma or a closing bracket was expected. (near "', `email` varchar(100) NOT NULL, `active` int(1) NOT NULL default ‘0'" at position 181)

Unexpected beginning of statement. (near "20" at position 268)

Unrecognized statement type. (near "NOT NULL" at position 272)

SQL查询:

CREATE TABLE IF NOT EXISTS `users`
(
  `id` int(11) NOT NULL auto_increment,
  `username` varchar(32) NOT NULL,
  `password` varchar(32) NOT NULL,
  `online` int(20) NOT NULL default ‘0',
  `email` varchar(100) NOT NULL,
  `active` int(1) NOT NULL default ‘0',
  `rtime` int(20) NOT NULL default ‘0',
  PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8; 

INSERT INTO `users` (`id`, `username`, `password`, `online`, `email`, `active`, `rtime`) 
VALUES (1, ‘testing’, ‘testing’, 0, ‘fake@noemail.co.uk’, 0, 0); 

Answer 1

例如，您使用不同类型的引号字符

`online` int(20) NOT NULL default ‘0', 
         here --------------------^

每次用完就换成普通的

CREATE TABLE IF NOT EXISTS `users`
(
  `id` int(11) NOT NULL auto_increment,
  `username` varchar(32) NOT NULL,
  `password` varchar(32) NOT NULL,
  `online` int(20) NOT NULL default '0',
  `email` varchar(100) NOT NULL,
  `active` int(1) NOT NULL default '0',
  `rtime` int(20) NOT NULL default '0',
  PRIMARY KEY (`id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8; 

但由于这些列的类型是 int，所以您根本不需要在默认值周围加上引号。