如何從 select 列加入？

Question

如何從 select 列加入？

$this->select('c.CurLevel''rl.Exp_C')->join($this->getData('sqlsrv3').'.dbo._RefLevel AS rl', 'c.CurLevel', '=', 'rl.Lvl+1');

我該怎么做rl.Level+1

Answer 1

select 列上表昵稱：

$this->select(['c.CurLevel','rl.Exp_C'])
->join($this->getData('sqlsrv3').'.dbo._RefLevel AS rl', 'c.CurLevel', '=', 'rl.Lvl+1');