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query.Select(q => q.ActionStudies.Sum(v => v.Count)).ToArray() query.Sum(q => q.ActionStudies.Select(a => a.Count).Sum()) query.SelectMany(q => q.ActionStudies.Select(v => v.Count)).Sum(); 以上任意一种表达式都不行， ActionStudies是一个子表的集合字段， count是ActionStudies子表的中的一个字段。

以下错误是我在 DotNetCore.EntityFrameworkCore.KingbaseES Version="6.0.22" 查询时报的错误 该如何解决

5

The LINQ expression 'DbSet() .GroupJoin( inner: DbSet() .Where(v => v.EndDate < __now_0 || v.EndDate == null && (int?)v.OrgAuditState == (int?)已通过), outerKeySelector: user => (Guid?)user.Id, innerKeySelector: record => record.TraineeId, resultSelector: (user,...