code: protected function getTableNames()
      {
          $schemas = DB::getConfig('used_schemas') ?: [DB::getConfig('schema')];
  
          $schemaCount = count($schemas);
  
          $binds = implode(',', array_fill(0, $schemaCount, '?'));
  
          return collect(
              DB::select("SELECT schemaname || '.' || tablename AS table FROM pg_catalog.pg_tables WHERE schemaname IN (".$binds.')', $schemas)
          )->pluck('table')->reject(function ($value, $key) {
              $tableName = explode('.', $value)[1];
  
              return $tableName === 'spatial_ref_sys';
          });
      }
docs: Get a list of all tables in the schema.
  
  @return \Illuminate\Support\Collection