SELECT A.*,IFNULL(B.JoinType,0) AS JoinType,IFNULL(B.TargetJoinType,0) AS TargetJoinType,IFNULL(B.StartClassHours,0) AS StartClassHours,IFNULL(C.CourseName,'') AS CourseName
,sc.StopClassEffectTime,B.SourceOrderId,B.TargetOrderId,stu.StuTel,stu.StuRealMobile,IFNULL(B.CreateBy,0) AS OrderCreateBy
,sc.StopClassEffectTime,B.SourceOrderId,B.TargetOrderId,stu.StuTel,stu.StuRealMobile,IFNULL(B.CreateBy,0) AS OrderCreateBy,IFNULL(stu.StuId,0) AS StudentId
FROM RB_Order_Guest AS A LEFT JOIN rb_order AS B ON A.OrderId=B.OrderId
LEFT JOIN rb_class as class on class.ClassId=a.ClassId
LEFT JOIN rb_student_orderguest as sog on sog.GuestId=a.Id