sql 分页rownumber方式

 alter procedure [dbo].[proc_getpaging]
(
 @TableName nvarchar(500),            --表名（可以为多表）
 @ReFieldsStr nvarchar(200) = '*',    --字段名(全部字段为*)
 @OrderString nvarchar(200),          --排序字段(支持多字段不用加order by)
 @OrderType nvarchar(4)='asc',                    --排序类型 (ASC DESC)
 @WhereString nvarchar(500) =N'',     --条件语句(不用加where)
 @PageSize int,                       --每页多少条记录
 @PageIndex int = 1 ,                 --指定当前为第几页
 @TotalRecord int output ,            --返回总记录数
 @ErrorMsg nvarchar(500) output       --返回错误消息
)
as

begin
   begin try
    declare @StartRecord int;
    declare @EndRecord int;
    declare @TotalCountSql nvarchar(1000);
    declare @SqlString nvarchar(2000); 

    set @StartRecord = (@PageIndex-1)*@PageSize + 1
    set @EndRecord = @StartRecord + @PageSize - 1
    set @TotalCountSql= N'select @TotalRecord = count(*) from ' + @TableName;--总记录数语句

    set @SqlString = N'(select row_number() over (order by '+ @OrderString +' '+@OrderType+') as rowId,'+@ReFieldsStr+' from '+ @TableName;
    if (@WhereString! = '' or @WhereString!=null)
        begin
            set @TotalCountSql=@TotalCountSql + '  where '+ @WhereString;
            set @SqlString =@SqlString+ '  where '+ @WhereString;
        end

    --第一次执行得到
    if(@TotalRecord is null)
     begin
           exec sp_executesql @TotalCountSql,N'@TotalRecord int out',@TotalRecord output;
     end
    ----执行主语句
    set @SqlString ='select * from ' + @SqlString + ') as t where rowId between ' + ltrim(str(@StartRecord)) + ' and ' +  ltrim(str(@EndRecord));
    exec(@SqlString)
    end try
    begin catch
    set @ErrorMsg = ERROR_MESSAGE()
    end catch
end

declare @total int
declare @msg nvarchar(100)
exec  proc_getpaging
'Ritems,honor','Ritems.*','Ritems.itemname','asc','',2,1,@total output  ,@msg  output
print @total
print @msg