sql多条件分页存储过程

-----分页存储过程
--判断存储过程是否存在
if OBJECT_ID('proc_Page') is not null
--删除存储过程
drop proc proc_Page
go
--创建存储过程
create  proc proc_Page
--参数
@ClaId int=0,               --班级Id
@Sage datetime=null,        --出生日期
@Sname nvarchar(10)=null,   --学生名称
@SmallScore int=0,          --小成绩
@BigScore int=0,            --大成绩
@CID int=0,                 --课程Id
@Tname nvarchar(10)=null,   --讲师名字
@PageIndex int,    --当前页
@PageSize int,    --每页条数
@TotalCount int out,  --总条数
@order int=1                --1升序  0降序
as
--变量
declare
@sql varchar(max),      --总sql
@sqlWhere varchar(max), --条件
@rid int,              --分页条件
@countSql nvarchar(max)  --个数sql

set @sql='';
set @sqlWhere=' where 1=1';
set @rid=(@PageIndex-1)*@PageSize;
set @countSql='select @total=count(1)
from Classs
join Student on Classs.ClaID=Student.ClaID
join SC      on sc.SID=Student.SID
join Course  on Course.CID=sc.CID
join Teacher on Teacher.TID=Course.TID';

 

--条件班级Id
if @ClaId!=0
begin
set @sqlWhere+=' and Classs.ClaId='+str(@ClaId);
end
----出生日期
if @Sage is not null
begin
set @sqlWhere+=' and Sage='+@Sage;
end
 --学生名称
if @Sname is not null
begin
set @sqlWhere+=' and Sname like ''%'+@Sname+'%''';
end
 --小成绩
if @SmallScore !=0
begin
set @sqlWhere+=' and Score>='+STR(@SmallScore);
end

 --大成绩
 if @BigScore !=0
begin
set @sqlWhere+=' and Score<='+STR(@BigScore);
end

 --课程Id
if @CID!=0
begin
set @sqlWhere+=' and CID='+str(@CID);
end
 --讲师名字
if @Tname is not null
begin
set @sqlWhere+=' and Tname like ''%'+@Tname+'%''';
end

--总条数
set @countSql+=@sqlWhere;

--执行计算条数的sql语句并且给输出参数赋值
exec sp_executesql  @countSql, N'@total int out',@total=@TotalCount out

--排序
declare @o varchar(4);
if @order=1
begin
set @o='asc';
end
if @order=0
begin
set @o='desc';
end
--总sql
set @sql='select top '+str(@PageSize)+' * from
(
select Classs.ClaID,Classs.ClassName,Classs.Counts,Student.Sage,Student.SID,Student.Sname,Student.Ssex,
SC.scid,SC.score,Course.CID,Course.Cname,Teacher.TID,Teacher.Tname,ROW_NUMBER() over(order by score '+@o+') as rid
from Classs
join Student on Classs.ClaID=Student.ClaID
join SC      on sc.SID=Student.SID
join Course  on Course.CID=sc.CID
join Teacher on Teacher.TID=Course.TID';

--条件
set @sql+=@sqlWhere;

set @sql+=' ) as temp
where rid>'+STR(@rid);

exec (@sql);