mysql存储过程定义变量出错

查询学院不同年份，不同月份，各专业省级、国家级竞赛获奖总人数，各学院的省级获奖情况，各学院的国家级获奖情况，学校获奖省级总人数，学校获奖国家级总人数。

create procedure proc_include(in syear int,in date_begin int,in date_end int)
delimiter $$
begin
declare s_totalnumber int;
declare g_totalnumber int;
select ('学院各专业省级、国家级竞赛获奖总人数')
select college.name,pgrade,major.majorname,COUNT(pgrade) as num
from team,componentinfo,student,major,college
where team.teamid = componentinfo.teamid
and componentinfo.stid = student.stid
and student.majorkey = major.majorkey
and major.collegekey = college.collegekey
and year(ptime) = syear
and month(ptime)>date_begin
and month(ptime)<date_end
group by college.name,majorname,pgrade
having pgrade <> 'NULL'
order by num

select ('各学院的省级获奖情况')
select college.name,pgrade,COUNT(pgrade) as num
from team,componentinfo,student,major,college
where team.teamid = componentinfo.teamid
and componentinfo.stid = student.stid
and student.majorkey = major.majorkey
and major.collegekey = college.collegekey
and year(ptime) = syear
and month(ptime)>date_begin
and month(ptime)<date_end
group by college.name,pgrade
having pgrade <> 'NULL' and pgrade <> '国家级'

select ('各学院的国家级获奖情况')
select college.name,pgrade,COUNT(pgrade) as num
from team,componentinfo,student,major,college
where team.teamid = componentinfo.teamid
and componentinfo.stid = student.stid
and student.majorkey = major.majorkey
and major.collegekey = college.collegekey
and year(ptime)=syear
and month(ptime)>date_begin
and month(ptime)<date_end
group by college.name,pgrade
having pgrade <> 'NULL' and pgrade <> '省级'

select g_totalnumber = COUNT(pgrade)
from team
where year(ptime) = syear
and month(ptime)>date_begin
and month(ptime)<date_end
and pgrade <> 'NULL' and pgrade <> '省级'

select s_totalnumber = COUNT(pgrade)
from team
where year(ptime) = syear
and month(ptime)>date_begin
and month(ptime)<date_end
and pgrade <> 'NULL' and pgrade <> '国家级'

select('学校获奖省级总人数：')
select s_totalnumber
select ('学校获奖国家级总人数：')
select g_totalnumber;
end
$$
delimiter;

把变量的@符号去掉不去掉都不行

没有bughttps://img-mid.csdnimg.cn/release/static/image/mid/ask/515027248836148.png "#left")

delimiter $$
create procedure proc_include(in syear int,in date_begin int,in date_end int)
begin
declare s_totalnumber int;
declare g_totalnumber int;

delimiter $$定义在存储过程外面。