数据库分页存储过程

create proc P_Page_Data

(
@tablename varchar(200) ,   --表名
@strGetFields varchar(500) = '*',  --查询列名
@PageIndex int = 1 ,         --页码
@pageSize int = 20,         --页面大小
@strWhere  varchar(1000) = '',     --查询条件
@strOrder varchar(100) = '', --排序列名
@intOrder bit = 1,        --排序类型  1为升序
@CountAll bigint output              --返回纪录总数 
)
as
begin
declare @strSql varchar(2000)  --查询语句
declare @strTemp varchar(1000) --临时变量
declare @strOrders varchar(100) --排序语句
declare @table varchar(100)
declare   @SQL   nvarchar(1000)
declare   @R bigint
set   @SQL=  N'select @R=count(*) from  '+convert(nvarchar(200),@TableName)+' where ' + convert(nvarchar(1000),@strWhere)
--SELECT @SQL;
exec  SP_EXECUTESQL   @SQL,  N' @R BIGINT OUTPUT',  @R OUTPUT
set   @CountAll=  @R
if @intOrder = 1

begin
    --为1是升序
    set @strTemp = '>(select max'
    set @strOrders =  ' order by  '+@strOrder+' asc '
end
else
begin
    --否则为降序
    set @strTemp = '<(select min'
    set @strOrders = ' order by  '+@strOrder+' desc '
end
if @PageIndex =1        --第一页纪录
begin
    if @strWhere = ''
    begin
         set @strSql = 'select top '+str(@pageSize)+' '+@strGetFields+' from '+@tablename+' '+@strOrders
     end
    else  
    begin
         set @strSql = 'select top '+str(@pageSize)+' '+@strGetFields+ ' from '+@tablename+' where '+@strWhere+' '+@strOrders
      
    end
end
else
begin
    set @strSql = 'select top'+str(@pageSize)+' '+@strGetFields+' from '+@tablename+' where ('+@strOrder+' '+@strTemp+' ('+@strOrder+')'
                  +' from (select top '+str((@pageIndex-1)*@pageSize)+' '+@strGetFields+' from '+@tablename+ ' '+@strOrders+ ') as tempTable ) '+@strOrders
         
    if @strWhere != ' '
    begin
       set @strSql = 'select top '+str(@pageSize)+ ' '+@strGetFields+' from '+@tablename+ ' where '+@strOrder+ ' '+@strTemp+' ('+@strOrder+') '
                   +' from(select top '+str((@pageIndex-1)*@pageSize)+' '+@strGetFields+' from '+@tablename+' where '+@strWhere+' ' +@strOrders+') as tempTable) and '+@strWhere+' '+@strOrders
   
    end
end 
exec(@strSql)   

end