Doctrine DateTime2 mapping problem. (MSSQL server will accept it if there will be 3 digits only after dot)

Datetime2Type.php

<?php

namespace FSi\Bundle\DemoBundle\Doctrine\DBAL\Types;

use Doctrine\DBAL\Types\VarDateTimeType;
use Doctrine\DBAL\Types\Type;
use Doctrine\DBAL\Platforms\AbstractPlatform;

class Datetime2Type extends VarDateTimeType
{
    public function canRequireSQLConversion()
    {
        return true;
    }

    public function convertToDatabaseValueSQL($sqlExpr, AbstractPlatform $platform)
    {
        return sprintf('CONVERT(datetime2, %s)', $sqlExpr);
    }
}

DemoBundle.php

<?php

namespace FSi\Bundle\DemoBundle;

use Symfony\Component\HttpKernel\Bundle\Bundle;

class DemoBundle extends Bundle
{
    public function boot()
    {
        Type::overrideType('datetime', 'FSi\Bundle\DemoBundle\Doctrine\DBAL\Types\Datetime2Type');
    }
}

Thanks for the solution.