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Zend Framework 2 产生的查询：

SELECT "uc".*, "c".* FROM "user_contacts" AS "uc" INNER JOIN "contacts" AS "c" ON "uc"."contact_id" = "c"."contact_id" WHERE "uc"."user_id" = '2' AND "c"."user_id" = '1';

导致此错误（在命令行上运行时）：

ERROR 1064 (42000): 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 '.*, "c".* FROM "user_contacts" AS "uc" INNER JOIN "contacts" AS "c" ON "uc"."con' at line 1

此查询（完全相同的查询减去双引号）运行良好：

SELECT uc.*, c.* FROM user_contacts AS uc INNER JOIN contacts AS c ON uc.contact_id = c.contact_id WHERE c.user_id = 2 AND uc.user_id = 1;

+---------+------------+------------+---------+
| user_id | contact_id | contact_id | user_id |
+---------+------------+------------+---------+
|       1 |          7 |          7 |       2 |
+---------+------------+------------+---------+
1 row in set (0.00 sec)

为什么会这样，我该如何解决？

在 Ubuntu 12.10 上使用 AMP 堆栈。

表格如下所示：

CREATE TABLE `contacts` (
    `contact_id` int(11) NOT NULL AUTO_INCREMENT,
    `user_id` int(11) NOT NULL,
    PRIMARY KEY (`contact_id`),
    UNIQUE KEY `contact_id_UNIQUE` (`contact_id`)
) ENGINE=InnoDB AUTO_INCREMENT=8 DEFAULT CHARSET=utf8

CREATE TABLE `user_contacts` (
    `user_id` int(11) NOT NULL,
    `contact_id` int(11) NOT NULL,
    PRIMARY KEY (`user_id`,`contact_id`),
    KEY `user_contacts_user_id_fkey_idx` (`user_id`),
    KEY `user_contacts_contact_id_idx` (`contact_id`),
    CONSTRAINT `user_contacts_contact_id_fkey` FOREIGN KEY (`contact_id`) REFERENCES    `contacts` (`contact_id`) ON DELETE NO ACTION ON UPDATE NO ACTION,
    CONSTRAINT `user_contacts_user_id_fkey` FOREIGN KEY (`user_id`) REFERENCES `user` (`user_id`) ON DELETE NO ACTION ON UPDATE NO ACTION
) ENGINE=InnoDB DEFAULT CHARSET=utf8

Zend db 适配器代码：

return array(
    'db' => array(
        'driver'         => 'Pdo',
        'dsn'            => 'mysql:dbname=' . $dbName . ';host=' . $host,
        'driver_options' => array(
            PDO::MYSQL_ATTR_INIT_COMMAND => 'SET NAMES \'UTF8\''
        ),
    ),
    'service_manager' => array(
        'factories' => array(
            'Zend\Db\Adapter\Adapter'
                => 'Zend\Db\Adapter\AdapterServiceFactory',
        ),
    ),
);

选择代码：

public function checkIfFriends($currentUserId,$requestedUserId) {
    $currentUserId      = (int) $currentUserId;
    $requestedUserId    = (int) $requestedUserId;

    $sql = new Sql($this->tableGateway->getAdapter());

    $select = $sql->select();
    $select->from(array('uc' => $this->tableGateway->getTable()))
        ->join(array('c' => 'contacts'), 'uc.contact_id = c.contact_id');

    $where = new Where();
    $where
        ->equalTo('uc.user_id', $currentUserId)
        ->equalTo('c.user_id', $requestedUserId);
    $select->where($where);


    //echo $select->getSqlString();
    $rowSet = $this->tableGateway->selectWith($select);
    $row = $rowSet->current();
    return ($row) ? true: false;  
}

为什么这被作为一个完全重复的副本关闭？不是。我知道问题可能是相同的，但 ZF2 正在生成一个由于引用而无法运行的查询。

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2 回答 2

1

此 Zend Framework 论坛帖子中的解决方案：

工作，但不是一个真正可以接受的解决方案，一个更好的解决方案将不胜感激。

public function checkIfFriends($currentUserId,$requestedUserId) {
    $currentUserId      = (int) $currentUserId;
    $requestedUserId    = (int) $requestedUserId;

    $sql = new Sql($this->tableGateway->getAdapter());

    $select = $sql->select();
    $select->from(array('uc' => $this->tableGateway->getTable()))
        ->join(array('c' => 'contacts'), 'uc.contact_id = c.contact_id');

    $where = new Where();
    $where
        ->equalTo('uc.user_id', $currentUserId)
        ->equalTo('c.user_id', $requestedUserId);
    $select->where($where);

    $dbAdapter = $this->tableGateway->getAdapter();
    $string = $sql->getSqlStringForSqlObject($select);
    $rowSet = $dbAdapter->query($string, $dbAdapter::QUERY_MODE_EXECUTE);

    $row = $rowSet->current();
    return ($row) ? true: false;  
}
于 2013-01-01T20:32:49.593 回答
0

我通过关闭操作系统中的死键设置解决了这个问题。如何在 Linux Mint 中执行此操作： http://forums.linuxmint.com/viewtopic.php?f=55&t= 97812

于 2014-04-19T11:47:40.933 回答