海量存储过程(500w数据,分页只需2秒)

这个存储过程执行的速度还不错.500W速度分页只要2秒,任何页数
可是有点问题就是,如果排序不是主键,ID,那么分页就会出错,不知道各位有什么好个意见,修改一下
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SQL code

create procedure SqlDataPaging
@tbName varchar(255),        --表名
@tbFields varchar(1000),      --返回字段
@OrderField varchar(255),   --排序的字段名
@PageSize int,                 --页尺寸
@PageIndex int,                --页码
@OrderType bit,                --排序类型,1是升序,0是降序
@strWhere varchar(1500),    --查询条件
@Total int output            --返回总记录数
as
declare @strSql varchar(5000)     --主语句
declare @strOrder varchar(200)    --排序
declare @strSqlCount nvarchar(500)--查询记录总数主语句
declare @strtemp varchar(50)      --排序附加语句
--------------排序-----------------1是降序,0未升序
if @OrderType !=0
begin
set @strtemp= '>(select max('
set @strOrder='order by ' + @OrderField + ' asc '
end
else
begin
set @strtemp= '<(select min('
set @strOrder='order by '+ @OrderField + ' desc'
end
--------------总记录数---------------
if @strWhere !=''
begin
set @strSqlCount='Select @TotalCout=count(*) from  ' + @tbName + 'where  '+ @strWhere
end
else
begin
set @strSqlCount='Select @TotalCout=count(*) from  ' + @tbName
end
--------------如果是第一页------------
if @PageIndex =1
begin
if @strWhere !=''
begin
set @strSql = 'Select top' +str(@PageSize)+ ' ' + @tbFields + '  from '+ @tbName +' where ' + @strWhere + ' ' + @strOrder
end
else
begin
set @strSql = 'Select top' +str(@PageSize)+ ' ' + @tbFields + '  from '+ @tbName + ' ' + @strOrder
end
end
else
begin
if @strWhere !=''
begin
set @strSql='Select top ' +str(@PageSize) + ' ' + @tbFields
+' from ' + @tbName + ' where '+@OrderField +' '
+ @strtemp+ ' ' +@OrderField+ ') from (select top'
+str((@PageIndex-1)*@PageSize) + ' '+@OrderField +' from '+@tbName
+ @strWhere+ ' '+ @strOrder +') as tb)'+ @strOrder
end
else
begin
set @strSql='Select top ' + str(@PageSize) + ' ' + @tbFields
+' from ' + @tbName + ' where '+@OrderField + ' '
+ @strtemp+ ' ' +@OrderField+ ') from (select top'
+str((@PageIndex-1)*@PageSize) + ' '+@OrderField +' from '+@tbName
+ ' '+ @strOrder +') as tb)'+ @strOrder
end
end
exec sp_executesql @strSqlCount,N'@TotalCout int output',@Total output
exec(@strSql)