在server sql中如何编写存储过程

--这是创建一个叫做StudentsGrtByTuTorIDOrClassID的存储过程
CREATE PROCEDURE [dbo].[StudentsGetByTutorIDOrClassID]
(@TeacherID varchar(10),@ClassID varchar(14))
AS
Begin

    if((@ClassID<>‘‘)and(@ClassID is not null))
    begin
        --根据班级编号查询学生名单信息 这里写你想写的sql语句
        Select StudentID,Name,Sex,ClassCode,SUBSTRING(ClassCode,1,14) as ClassID,ClassName,dbo.GetStudyFlagToCh(StudyFlag) as StudyFlagCaption  from StudentInfoView where ClassCode like @ClassID+‘%‘ order by ClassCode
    end
    else begin
        ----根据辅导员编号查询学生名单信息
        Select StudentID,Name,Sex,ClassCode,SUBSTRING(ClassCode,1,14) as ClassID,ClassName,dbo.GetStudyFlagToCh(StudyFlag) as StudyFlagCaption  from StudentInfoView A,ClassTutorInfo B
        where SUBSTRING(A.ClassCode,1,14)=B.ClassID and B.TeacherID = @TeacherID order by A.ClassCode

    end
end

--exec StudentsGetByTutorIDOrClassID ‘0413‘,‘‘
--exec StudentsGetByTutorIDOrClassID ‘0413‘,‘20150610020002‘

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