我只是从口才开始，有可能实现这种多种过滤器吗？

Question

             $c = table1::leftJoin('table2', function($join) {
                $join->on('table1.location', '=', 'table2.location');});
                $c->select(DB::Raw("
                                    table1.*,
                                    SUM(table2.population) as total_population,
                                    SUM(table2.population"));
                if($data->max_age != NULL){
                    DB::statement("
                    where `$data->min_age`>= demographics.age
                    where  table2.age <= `$data->max_age`
                    ");
                }
                if($data->max_income != NULL){
                    DB::statement("
                    where `$data->min_income`>= table2.income
                    where  table2.income <= `$data->max_income`
                    ");
                }
                    DB::statement("
                        )
                    ");

                    */
                 return $c->get();
table1:location,etc.
table2:location,income,age,population
output:location = USA
total_population = 55000
selected_population = 1000

我想知道如何正确实施它。我在运行中遇到了一些不同的错误，如果有人能帮助我，我将不胜感激。