问题

我尝试从Java代码中使用QueryDSL。但是，在使用带有多个选择子句中的列的内部查询时，我无法访问指定的列。例如r.maxTime。

FROM (
      SELECT Train, MAX(Time) as MaxTime
      FROM TrainTable
      GROUP BY Train
) r
INNER JOIN TrainTable t
ON t.Train = r.Train AND t.Time = r.MaxTime```

<details>
<summary>英文:</summary>

I tried to use querydsl from java code. but when using inner query with more the on column in select clause, I cant approach to specified columns. ```r.maxTime``` for example.

```SELECT t.Train, t.Dest, r.MaxTime
FROM (
      SELECT Train, MAX(Time) as MaxTime
      FROM TrainTable
      GROUP BY Train
) r
INNER JOIN TrainTable t
ON t.Train = r.Train AND t.Time = r.MaxTime

</details>