sqlserver查询（时间相关）

select a.UserName 用户名,b.LoginName 号码,c.MenuTitle 标题,max(a.AccessTime)访问时间  from JfAccessLog a,OaUser b,JfMenu c where CONVERT(char,a.AccessTime,112)=CONVERT(char,GETDATE(),112)  and a.UserId=b.UserId and a.MenuId=c.MenuId and a.MenuId=@menu group by a.UserName,b.LoginName,c.MenuTitle;--yyyymmdd