Generate The Raw MySQL Query From Laravel Query Builder

Question

How can i get mysql query of a laravel query

Convert:

App\\User::where(\'balance\',\'>\',0)->where(...)-         


        

Answer 1

In Laravel 5.4 (I didn't check this in other versions), add this function into the "App"=>"Providers"=>"AppServiceProvider.php" .

public function boot()
{

    if (App::isLocal()) {

        DB::listen(
            function ($sql) {
                // $sql is an object with the properties:
                //  sql: The query
                //  bindings: the sql query variables
                //  time: The execution time for the query
                //  connectionName: The name of the connection

                // To save the executed queries to file:
                // Process the sql and the bindings:
                foreach ($sql->bindings as $i => $binding) {
                    if ($binding instanceof \DateTime) {
                        $sql->bindings[$i] = $binding->format('\'Y-m-d H:i:s\'');
                    } else {
                        if (is_string($binding)) {
                            $sql->bindings[$i] = "'$binding'";
                        }
                    }
                }

                // Insert bindings into query
                $query = str_replace(array('%', '?'), array('%%', '%s'), $sql->sql);

                $query = vsprintf($query, $sql->bindings);

                // Save the query to file
                /*$logFile = fopen(
                    storage_path('logs' . DIRECTORY_SEPARATOR . date('Y-m-d') . '_query.log'),
                    'a+'
                );*/
                Log::notice("[USER] $query");
            }
        );
    }
}

After that install, https://github.com/ARCANEDEV/LogViewer and then you can see every executed SQL queries without editing the code.

Answer 2

Here is a helper function who tells you the last SQL executed.

use DB;
public static function getLastSQL()
{
    $queries = DB::getQueryLog();
    $last_query = end($queries);
          // last_query is the SQL with with data binding like 
          //   { 
          //       select ? from sometable where field = ? and field2 = ? ;
          //       param1,
          //       param2，
          //       param3，
          //   }
          //   which is hard to read.
    $last_query = bindDataToQuery($last_query);     
          // here, last_query is the last SQL you have executed as normal SQL
          //     select param1 from sometable where field=param2 and field2 = param3;
    return $last_query
}

Here is the bindDataToQuery function, who fill the '?' blanks with real params.

protected static function bindDataToQuery($queryItem){
    $query = $queryItem['query'];
    $bindings = $queryItem['bindings'];
    $arr = explode('?',$query);
    $res = '';
    foreach($arr as $idx => $ele){
        if($idx < count($arr) - 1){
            $res = $res.$ele."'".$bindings[$idx]."'";
        }
    }
    $res = $res.$arr[count($arr) -1];
    return $res;
}

Answer 3

To print the raw sql query, try:

DB::enableQueryLog();
// Your query here
$queries = DB::getQueryLog();
print_r($queries);

Reference

Answer 4

use toSql() method of laravel to get the query to be executed like

App\User::where('balance','>',0)->where(...)->toSql();

But Laravel will not show you parameters in your query, because they are bound after preparation of the query. To get the bind parameters, use this

$query=App\User::where('balance','>',0)->where(...);
print_r($query->getBindings() );

enable the query log as DB::enableQueryLog() and then output to the screen the last queries ran you can use this,

dd(DB::getQueryLog());

Answer 5

It is so strange that the laravel haven't support any way to get the raw sql easily, it is now version 6 after all...

Here's a workaround I used by myself to quickly get the raw sql with parameters without installing any extension...

Just deliberately make your original sql WRONG

Like change

DB::table('user')

to

DB::table('user1')

where the table "user1" does not exist at all!

Then run it again.

Sure there will be an exception reported by laravel.

SQLSTATE[42S02]: Base table or view not found: 1146 Table 'user1' doesn't exist (SQL: ...)

And now you can see the raw sql with parameters is right after the string "(SQL:"

Change back from the wrong table name to the right one and there you go!

Answer 6

Instead of interfering with the application with print statements or "dds", I do the following when I want to see the generated SQL:

DB::listen(function ($query) { 
    Log::info($query->sql, $query->bindings);
});

// (DB and Log are the facades in Illuminate\Support\Facades namespace)

This will output the sql to the Laravel log (located at storage/logs/laravel.log). A useful command for following writes to this file is

tail -n0 -f storage/logs/laravel.log