具体表现为,代码: ```csharp var testgrpsql = g.sqlite.Select<TaskBuild>() .From<Templates>((a, b) => a.InnerJoin(aa => aa.TemplatesId == b.Id2)) .GroupBy((a, b) => b.Code) .ToSql(a => new { a.Key, sss = a.Sum(a.Value.Item1.Id), sss2 = a.Sum(a.Value.Item2.Id2) }); ``` 错误: 