如果状态为enable，包类型为domestic和order by id desc，我想显示数据库中的数据。下面是我的代码：

$sql = "select * 
        from holidays 
        where pkg_status = 'Enable' 
          and pkg_type = 'Domestic' 
        limit 6";

我想将此数据显示为order by id desc。当我尝试添加这样的查询时，它不起作用。

$sql = "select * 
        from holidays 
        where pkg_status = 'Enable' 
          and pkg_type = 'Domestic' 
        limit 6 
        order by id desc";

请帮帮我。