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
我创建了一些简单的函数来从一些查询中获取SQL和绑定。
/**
* getSql
*
* Usage:
* getSql( DB::table("users") )
*
* Get the current SQL and bindings
*
* @param mixed $query Relation / Eloquent Builder / Query Builder
* @return array Array with sql and bindings or else false
*/
function getSql($query)
{
if( $query instanceof Illuminate\Database\Eloquent\Relations\Relation )
{
$query = $query->getBaseQuery();
}
if( $query instanceof Illuminate\Database\Eloquent\Builder )
{
$query = $query->getQuery();
}
if( $query instanceof Illuminate\Database\Query\Builder )
{
return [ 'query' => $query->toSql(), 'bindings' => $query->getBindings() ];
}
return false;
}
/**
* logQuery
*
* Get the SQL from a query in a closure
*
* Usage:
* logQueries(function() {
* return User::first()->applications;
* });
*
* @param closure $callback function to call some queries in
* @return Illuminate\Support\Collection Collection of queries
*/
function logQueries(closure $callback)
{
// check if query logging is enabled
$logging = DB::logging();
// Get number of queries
$numberOfQueries = count(DB::getQueryLog());
// if logging not enabled, temporarily enable it
if( !$logging ) DB::enableQueryLog();
$query = $callback();
$lastQuery = getSql($query);
// Get querylog
$queries = new Illuminate\Support\Collection( DB::getQueryLog() );
// calculate the number of queries done in callback
$queryCount = $queries->count() - $numberOfQueries;
// Get last queries
$lastQueries = $queries->take(-$queryCount);
// disable query logging
if( !$logging ) DB::disableQueryLog();
// if callback returns a builder object, return the sql and bindings of it
if( $lastQuery )
{
$lastQueries->push($lastQuery);
}
return $lastQueries;
}
用法:
getSql( DB::table('users') );
// returns
// [
// "sql" => "select * from `users`",
// "bindings" => [],
// ]
getSql( $project->rooms() );
// returns
// [
// "sql" => "select * from `rooms` where `rooms`.`project_id` = ? and `rooms`.`project_id` is not null",
// "bindings" => [ 7 ],
// ]
其他回答
要查看Laravel执行的查询,请使用Laravel查询日志
DB::enableQueryLog();
$queries = DB::getQueryLog();
你可以使用发条
Clockwork是一个用于PHP开发的Chrome扩展,通过一个新面板扩展了Developer Tools,该面板提供了用于调试和分析PHP应用程序的各种信息,包括请求、标头、获取和发布数据、cookie、会话数据、数据库查询、路由、应用程序运行时可视化等信息。
但也适用于firefox
对于laravel 5.5.X
如果希望接收应用程序执行的每个SQL查询,可以使用listen方法。此方法对于记录查询或调试非常有用。您可以在服务提供商中注册查询侦听器:
<?php
namespace App\Providers;
use Illuminate\Support\Facades\DB;
use Illuminate\Support\ServiceProvider;
class AppServiceProvider extends ServiceProvider
{
/**
* Bootstrap any application services.
*
* @return void
*/
public function boot()
{
DB::listen(function ($query) {
// $query->sql
// $query->bindings
// $query->time
});
}
/**
* Register the service provider.
*
* @return void
*/
public function register()
{
//
}
}
来源
您可以使用此包获取加载页面时正在执行的所有查询
https://github.com/barryvdh/laravel-debugbar
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);