Drupal 7中的Mysql语法错误

我试图使用外键定义表之间的关系 在drupal 7中。我使用hook_模式和hook_更新函数来定义 更新架构。我得到以下错误

失败：PDO异常：SQLSTATE[42000]：语法错误或访问 违反：1064您的SQL语法有错误；检查手册 对应于MySQL服务器版本的正确语法 使用near'DEFAULT NULL）引擎=InnoDB默认字符集utf8 注释第5行的“表格：创建表格” {organization}（

id

INT unsigned NOT NULL 自动递增注释“关系的主标识符”，

uid

INT unsigned NULL DEFAULT 0 COMMENT'的主标识符 用户/员工'，

oid

INT unsigned NULL默认值0注释' 雇用员工的部门标识符，

主键

默认值 NULL）引擎=InnoDB默认字符集utf8注释“表格” 雇员与组织的关系";；中的数组（） db_create_table（）（第2717行） C:\xampp\htdocs\tutumuudit\includes\database\database.inc）

我自己解决的。我把那些键放在字段数组下。 那太愚蠢了，我花了两个小时才弄清楚。决赛 代码如下：

$schema['relationship] = array(
  'description' => 'The table for employee organisation relationship',
  'fields' => array(
      'rid' => array(
          'description' => 'The primary Identifier for a Relationship.',
          'type' => 'serial',
          'unsigned' => TRUE,
          'not null' => TRUE,
      ),
      'uid' => array(
          'description' => 'The primary Identifier for User/Employee',
          'type' => 'int',
          'unsigned' => TRUE,
          'not null' => FALSE,
          'default' => 0,
      ),
      'oid' => array(
          'description' => 'The department Identifier of employee employed',
          'type' => 'int',
          'unsigned' => TRUE,
          'not null' => FALSE,
          'default' => 0,
  ),
  'indexes' => array(
      'uid' => array('uid'),
     'oid' => array('oid'),
  ),    
 'foreign keys' => array(
     'uid' => array(
         'table' => 'users',
          'columns' => array('uid' => 'uid')
     ),
      'oid' => array(
       'table' => 'organization',
         'columns' => array('oid' => 'oid')
   ),
 ),
  'primary key' => array('rid'),
  )
);

$schema['relationship] = array(
  'description' => 'The table for employee organisation relationship',
  'fields' => array(
      'rid' => array(
          'description' => 'The primary Identifier for a Relationship.',
          'type' => 'serial',
          'unsigned' => TRUE,
          'not null' => TRUE,
      ),
      'uid' => array(
          'description' => 'The primary Identifier for User/Employee',
          'type' => 'int',
          'unsigned' => TRUE,
          'not null' => FALSE,
          'default' => 0,
      ),
      'oid' => array(
          'description' => 'The department Identifier of employee employed',
          'type' => 'int',
          'unsigned' => TRUE,
          'not null' => FALSE,
          'default' => 0,
  ),  
  ),
'indexes' => array(
      'uid' => array('uid'),
     'oid' => array('oid'),
  ),    
 'foreign keys' => array(
     'uid' => array(
         'table' => 'users',
          'columns' => array('uid' => 'uid')
     ),
      'oid' => array(
       'table' => 'organization',
         'columns' => array('oid' => 'oid')
   ),
 ),
  'primary key' => array('rid'),
);