mysql命令怎么了？

Question

當我在phpmyadmin中運行以下命令時。

CREATE TABLE subscribers (
  'subscriber_id' int(11) NOT NULL auto_increment,
  'customers_id' int(11) default NULL,
  'email_address' varchar(96) NOT NULL default '',
  'email_format' varchar(4) NOT NULL default 'TEXT',
  PRIMARY KEY  ('subscriber_id')
) TYPE=MyISAM;

它向我顯示#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 ''subscriber_id' int(11) NOT NULL auto_increment, 'customers_id' int(11) defaul' at line 2 #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 ''subscriber_id' int(11) NOT NULL auto_increment, 'customers_id' int(11) defaul' at line 2

 INSERT INTO query_builder (query_id, query_category, query_name, query_description, query_string, query_keys_list) VALUES (6, 'email,newsletters', 'All Newsletter Subscribers', 'Returns name and email address of all Customer Account subscribers and all Newsletter-Only subscribers.', 'select c.customers_firstname, c.customers_lastname, s.email_address as customers_email_address from TABLE_SUBSCRIBERS as s left join TABLE_CUSTOMERS as c on c.customers_id = s.customers_id ', '')

它顯示：1062-密鑰1的重復條目“ 6”

我認為命令正確。 我不知道如何糾正它？ 謝謝。

Answer 1

您不需要在列名兩邊加上單引號。 刪除它。

這應該是

CREATE TABLE subscribers (
  subscriber_id int(11) NOT NULL auto_increment,
  customers_id int(11) default NULL,
  email_address varchar(96) NOT NULL default '',
  email_format varchar(4) NOT NULL default 'TEXT',
  PRIMARY KEY  (subscriber_id)
) TYPE=MyISAM;

但是，如果與mysql保留字沖突，則可以將列名括在反引號中。

Answer 2

您不應該使用字符串作為列名。 也是ENGINE不是TYPE。 它應該看起來像：

CREATE TABLE subscribers (
  subscriber_id int(11) NOT NULL auto_increment,
  customers_id int(11) default NULL,
  email_address varchar(96) NOT NULL default '',
  email_format varchar(4) NOT NULL default 'TEXT',
  PRIMARY KEY  (subscriber_id)
) ENGINE=MyISAM;

Answer 3

只需刪除列名周圍的引號，然后將最后一位更改為Engine = MyISAM即可為我工作：

CREATE TABLE subscribers (
  subscriber_id int(11) NOT NULL auto_increment,
  customers_id int(11) default NULL,
  email_address varchar(96) NOT NULL default '',
  email_format varchar(4) NOT NULL default 'TEXT',
  PRIMARY KEY  (subscriber_id)
) Engine=MyISAM;