如何在关系数据中给出"where“与laravel

$result = DB::table('table_name')->where('column_name', '=', 'value')->get();

$result = DB::table('table_name')
              ->where('column1', '=', 'value1')
              ->orWhere('column2', '>', 'value2')
              ->get();

$result = DB::table('table_name')
              ->where(function ($query) {
                  $query->where('column1', 'value1')
                        ->orWhere('column2', 'value2');
              })
              ->get();

$result = DB::table('table_name')
              ->where('column1', 'value1')
              ->where('column2', 'like', '%value2%')
              ->orderBy('column3', 'desc')
              ->get();