set@schoolid=41;select l.StartTime,l.EndTime,c.EntranceYear as 入学级,cg.Grade as 年级,c.ClassName as 班级名称,s.CName as 学生,st.StuNumber as 学号,case l.LeaveType when 1 then '事假' when 2 then '病假' end as 请假类型,l.Reason as 请假理由,case l.ApproveStatus when 0 then '请…