.Where(a => dbContext.dbSet.Where(b=>a.XX == b.XX).Any() 报错

[tky753]

public class Song
{
    public long Id { get; set; }
    public string Name { get; set; }
}

public class Author
{
    public long Id { get; set; }
    public long SongId { get; set; }
    public string Name { get; set; }
}

public class TestDbContext : DbContext
{
    public TestDbContext(IFreeSql orm) : base(orm, null)
    {
    }
    public DbSet<Song> Songs { get; set; }
    public DbSet<Author> Authors { get; set; }
}

......
IFreeSql fsql = ......
var context = new TestDbContext(fsql);

var sql = context.Songs
    .Where(a =>
        context.Authors
            //.Select  //加上这句就不报错，不加上报 variable 'a' of type 'Song' referenced from scope '', but it is not defined
            .Where(b => b.SongId == a.Id)
            .Any())
    .ToSql(a => a.Name);

[2881099]

是的，lambda Invoke 出错，这里脱离了上下文