Question

我在宅基地虚拟机（流浪汉）中使用最新版本的laravel（5.1）。

我将我的项目连接到本地mariaDB服务器，其中我有一些表和2个db-view。

由于我只在db-view表上做了一些select，所以我随机收到了这个错误：

一般错误：1615准备好的陈述需要重新准备

从今天开始，我只在db视图上选择时才会出现此错误。如果我打开我的phpMyAdmin并进行相同的选择，则返回正确的结果。

我尝试打开php artisan tinker并选择db-view的一条记录，但它返回相同的错误：

// Select one user from user table
>>> $user = new App\User
=> <App\User #000000006dc32a890000000129f667d2> {}
>>> $user = App\User::find(1);
=> <App\User #000000006dc32a9e0000000129f667d2> {
       id: 1,
       name: "Luca",
       email: "luca@email.it",
       customerId: 1,
       created_at: "2015-08-06 04:17:57",
       updated_at: "2015-08-11 12:39:01"
   }
>>> 
// Select one source from Source db-view
>>> $source = new App\Source
=> <App\Source #000000006dc32a820000000129f667d2> {}
>>> $source = App\Source::find(1);
Illuminate\Database\QueryException with message 'SQLSTATE[HY000]: General error: 1615 Prepared statement needs to be re-prepared (SQL: select * from `sources` where `sources`.`id` = 1 limit 1)'

我该如何解决？我读到了mysqldump的一个问题（但不是我的情况）并且增加了table_definition_cache的值，但它不确定它是否会起作用而我无法修改它们。

这是一种laravel错误吗？

我怎么能弄明白呢？

编辑：

根据要求，我添加了我的模型源代码。 Source.php：

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Source extends Model
{
    protected $table = 'sources';


    /*
    |--------------------------------------------------------------------------
    | FOREIGN KEYS
    |--------------------------------------------------------------------------
    */

    /**
     * 
     * @return [type] [description]
     */
    public function customersList(){
        return $this->hasMany("App\CustomerSource", "sourceId", "id");
    }


    /**
     * 
     * @return [type] [description]
     */
    public function issues(){
        return $this->hasMany("App\Issue", "sourceId", "id");
    }
}

编辑2：

如果我使用mysqli在项目中执行相同的查询，它可以工作：

$db = new mysqli(getenv('DB_HOST'), getenv('DB_USERNAME'), getenv('DB_PASSWORD'), getenv('DB_DATABASE'));
if($db->connect_errno > 0){
    dd('Unable to connect to database [' . $db->connect_error . ']');
}
$sql = "SELECT * FROM `sources` WHERE `id` = 4";
if(!$result = $db->query($sql)){
    dd('There was an error running the query [' . $db->error . ']');
}

dd($result->fetch_assoc());

编辑3： Afeter 2个月，我还在那里。相同的错误，没有找到解决方案我决定尝试一下aritsan tinker的小解决方案，但没有好消息。我报告了我尝试过的内容：

首先尝试获取表模型：

>>> $user = \App\User::find(1);
=> App\User {#697
     id: 1,
     name: "Luca",
     email: "luca.d@company.it",
     customerId: 1,
     created_at: "2015-08-06 04:17:57",
     updated_at: "2015-10-27 11:28:14",
   }

现在尝试获取视图表模型：

>>> $ir = \App\ContentRepository::find(15);
Illuminate\Database\QueryException with message 'SQLSTATE[42S02]: Base table or view not found: 1146 Table 'dbname.content_repositories' doesn't exist (SQL: select * from `content_repositories` where `content_repositories`.`id` = 1 limit 1)'

当contentRepository在模型ContentRepository.php中没有正确的表名设置时：

>>> $pdo = DB::connection()->getPdo();
=> PDO {#690
     inTransaction: false,
     errorInfo: [
       "00000",
       1146,
       "Table 'dbname.content_repositories' doesn't exist",
     ],
     attributes: [
       "CASE" => NATURAL,
       "ERRMODE" => EXCEPTION,
       "AUTOCOMMIT" => 1,
       "PERSISTENT" => false,
       "DRIVER_NAME" => "mysql",
       "SERVER_INFO" => "Uptime: 2513397  Threads: 12  Questions: 85115742  Slow queries: 6893568  Opens: 1596  Flush tables: 1  Open tables: 936  Queries per second avg: 33.864",
       "ORACLE_NULLS" => NATURAL,
       "CLIENT_VERSION" => "mysqlnd 5.0.11-dev - 20120503 - $Id: id_here $",
       "SERVER_VERSION" => "5.5.5-10.0.17-MariaDB-1~wheezy-wsrep-log",
       "STATEMENT_CLASS" => [
         "PDOStatement",
       ],
       "EMULATE_PREPARES" => 0,
       "CONNECTION_STATUS" => "localiphere via TCP/IP",
       "DEFAULT_FETCH_MODE" => BOTH,
     ],
   }
>>>

更改表值内部模型ContentRepository.php：

>>> $ir = \App\ContentRepository::find(15);
Illuminate\Database\QueryException with message 'SQLSTATE[HY000]: General error: 1615 Prepared statement needs to be re-prepared (SQL: select * from `contentRepository` where `contentRepository`.`id` = 15 limit 1)'

如果正确，请注意缺少的“errorInfo”：

>>> $pdo = DB::connection()->getPdo();
=> PDO {#690
     inTransaction: false,
     attributes: [
       "CASE" => NATURAL,
       "ERRMODE" => EXCEPTION,
       "AUTOCOMMIT" => 1,
       "PERSISTENT" => false,
       "DRIVER_NAME" => "mysql",
       "SERVER_INFO" => "Uptime: 2589441  Threads: 13  Questions: 89348013  Slow queries: 7258017  Opens: 1604  Flush tables: 1  Open tables: 943  Queries per second avg: 34.504",
       "ORACLE_NULLS" => NATURAL,
       "CLIENT_VERSION" => "mysqlnd 5.0.11-dev - 20120503 - $Id: id_here $",
       "SERVER_VERSION" => "5.5.5-10.0.17-MariaDB-1~wheezy-wsrep-log",
       "STATEMENT_CLASS" => [
         "PDOStatement",
       ],
       "EMULATE_PREPARES" => 0,
       "CONNECTION_STATUS" => "localIPhere via TCP/IP",
       "DEFAULT_FETCH_MODE" => BOTH,
     ],
   }

显示db的表：

>>> $tables = DB::select('SHOW TABLES');
=> [
     {#702
       +"Tables_in_dbname": "table_name_there",
     },
     {#683
       +"Tables_in_dbname": "table_name_there",
     },
     {#699
       +"Tables_in_dbname": "table_name_there",
     },
     {#701
       +"Tables_in_dbname": "table_name_there-20150917-1159",
     },
     {#704
       +"Tables_in_dbname": "contentRepository", */ VIEW TABLE IS THERE!!!! /*
     },
     {#707
       +"Tables_in_dbname": "table_name_there",
     },
     {#684
       +"Tables_in_dbname": "table_name_there",
     },
   ]

尝试正常选择：

>>> $results = DB::select('select * from dbname.contentRepository limit 1');
Illuminate\Database\QueryException with message 'SQLSTATE[HY000]: General error: 1615 Prepared statement needs to be re-prepared (SQL: select * from dbname.contentRepository limit 1)'

尝试无准备的查询：

>>> DB::unprepared('select * from dbname.contentRepository limit 1')
=> false

尝试第二次无准备的查询：

>>> DB::unprepared('select * from dbname.contentRepository limit 1')
Illuminate\Database\QueryException with message 'SQLSTATE[HY000]: General error: 2014 Cannot execute queries while other unbuffered queries are active.  Consider using PDOStatement::fetchAll().  Alternatively, if your code is only ever going to run against mysql, you may enable query buffering by setting the PDO::MYSQL_ATTR_USE_BUFFERED_QUERY attribute. (SQL: select * from dbname.contentRepository limit 1)'

尝试PDOStatement :: fetchAll（）：

>>> DB::fetchAll('select * from dbname.contentRepository limit 1'); 
PHP warning:  call_user_func_array() expects parameter 1 to be a valid callback, class 'Illuminate\Database\MySqlConnection' does not have a method 'fetchAll' in /Users/luca/company/Laravel/dbname/vendor/laravel/framework/src/Illuminate/Database/DatabaseManager.php on line 296

尝试第二个PDOStatement :: fetchAll（）：

>>> $pdo::fetchAll('select * from dbname.contentRepository limit 1');
  [Symfony\Component\Debug\Exception\FatalErrorException]  
  Call to undefined method PDO::fetchAll()

尝试声明......：

>>> $pdos = DB::statement('select * from dbname.contentRepository limit 1')
Illuminate\Database\QueryException with message 'SQLSTATE[HY000]: General error: 1615 Prepared statement needs to be re-prepared (SQL: select * from dbname.contentRepository limit 1)'

谢谢

Answer 1

似乎可以添加

'options'   => [
                \PDO::ATTR_EMULATE_PREPARES => true
            ]

数据库配置中的projectName/config/database.php内部文件。它会是这样的：

'mysql' => [
    'driver'    => 'mysql',
    'host'      => env('DB_HOST', 'localhost'),
    'database'  => env('DB_DATABASE', 'forge'),
    'username'  => env('DB_USERNAME', 'forge'),
    'password'  => env('DB_PASSWORD', ''),
    'charset'   => 'utf8',
    'collation' => 'utf8_unicode_ci',
    'prefix'    => '',
    'strict'    => false,
    'options'   => [
        \PDO::ATTR_EMULATE_PREPARES => true
    ]
],

Laravel 5.1。希望它会有所帮助！

Answer 2

根据接受的答案中的评论，正在运行

SET GLOBAL table_definition_cache = 1024

MariaDB中的问题解决了。

https://mariadb.com/kb/en/library/server-system-variables/#table_definition_cache

Answer 3

似乎已经记录了MySQL Bug。

修改

您的模型是否使用'id'作为主键？我喜欢在模型中明确设置主键，即使它是。

protected $primaryKey = 'id'; // If different than id, definitely need to set the column here

您还可以尝试评论hasMany()个功能，然后重试。有时Laravel可以在eagerLoad上做奇怪的事情，特别是如果它有很多记录要映射到它们。

Laravel：一般错误：1615准备好的陈述需要重新准备

3 个答案: