/**
   *  w.firstname => firstname in db
   *  w.firstName => first_name
   *  w.result.firstName => w.first_name as fn_on_w
   *  w.resultName => ResultName[Worker]
   *  w.resultName.firstName => sqls"fn_on_w"
   *
   *  sqls stands for SQLSyntax
   *
   */