给定以下代码:
DB::table('users')->get();
我想得到上面的数据库查询生成器将生成的原始SQL查询字符串。在本例中,它将是SELECT*FROM用户。
我该怎么做?
给定以下代码:
DB::table('users')->get();
我想得到上面的数据库查询生成器将生成的原始SQL查询字符串。在本例中,它将是SELECT*FROM用户。
我该怎么做?
当前回答
如果您使用的不是Laravel,而是Elquent包,那么:
use \Illuminate\Database\Capsule\Manager as Capsule;
use \Illuminate\Events\Dispatcher;
use \Illuminate\Container\Container;
$capsule = new Capsule;
$capsule->addConnection([
// connection details
]);
// Set the event dispatcher used by Eloquent models... (optional)
$capsule->setEventDispatcher(new Dispatcher(new Container));
// Make this Capsule instance available globally via static methods... (optional)
$capsule->setAsGlobal();
// Setup the Eloquent ORM...(optional unless you've used setEventDispatcher())
$capsule->bootEloquent();
// Listen for Query Events for Debug
$events = new Dispatcher;
$events->listen('illuminate.query', function($query, $bindings, $time, $name)
{
// Format binding data for sql insertion
foreach ($bindings as $i => $binding) {
if ($binding instanceof \DateTime) {
$bindings[$i] = $binding->format('\'Y-m-d H:i:s\'');
} else if (is_string($binding)) {
$bindings[$i] = "'$binding'";`enter code here`
}
}
// Insert bindings into query
$query = str_replace(array('%', '?'), array('%%', '%s'), $query);
$query = vsprintf($query, $bindings);
// Debug SQL queries
echo 'SQL: [' . $query . ']';
});
$capsule->setEventDispatcher($events);
其他回答
$data = User::toSql();
echo $data; //this will retrun select * from users. //here User is model
如果您正在使用修补程序并希望记录形成的SQL查询,可以执行以下操作
$ php artisan tinker
Psy Shell v0.9.9 (PHP 7.3.5 — cli) by Justin Hileman
>>> DB::listen(function ($query) { dump($query->sql); dump($query->bindings); dump($query->time); });
=> null
>>> App\User::find(1)
"select * from `users` where `users`.`id` = ? limit 1"
array:1 [
0 => 1
]
6.99
=> App\User {#3131
id: 1,
name: "admin",
email: "admin@example.com",
created_at: "2019-01-11 19:06:23",
updated_at: "2019-01-11 19:06:23",
}
>>>
从laravel 5.2开始。您可以使用DB::listen获取执行的查询。
DB::listen(function ($query) {
// $query->sql
// $query->bindings
// $query->time
});
或者,如果要调试单个Builder实例,则可以使用toSql方法。
DB::table('posts')->toSql();
将此代码添加到AppServiceProvider并获取日志文件
\DB::listen(function ($query) {
\Log::info(
$query->sql,
$query->bindings,
$query->time
);
});
首先,您需要通过调用以下命令来启用查询日志:
DB::enableQueryLog();
使用DB facade查询后,您可以编写:
dd(DB::getQueryLog());
输出如下:
array:1 [▼
0 => array:3 [▼
"query" => "select * from `users` left join `website_user` on `users`.`id` = `website_user`.`user_id` left join `region_user` on `users`.`id` = `region_user`.`user_id` left ▶"
"bindings" => array:5 [▶]
"time" => 3.79
]
]