数据库分页存储过程代码

数据库分页存储过程代码

代码如下:
/*
数据库分页存储过程，支持倒序和升序
参数说明：
@tablename：为搜索表名
@tablefield：为表的字段，约定为表的主键,
@where：为搜索表名，要显示所有记录请设为"1=1"
@orderby：为搜索结果排序，如order by id desc
@fieldlist：为字段列表，如userid, username
@curpage：当前页码
@page_record：每页记录条数
@sort：排序标识（如果是倒序排，参数值为desc，为升序，参数值为asc，跟orderby参数是对应的）
结果： 返回表tablename中满足条件where的第curpage页的page_record条记录，结果按orderby排序
*/
create procedure proc_commonpaging

@tablename varchar(100),
@tablefield varchar(20),
@where varchar(5000),
@orderby varchar(500),
@fieldlist varchar(1000),
@curpage int,
@page_record int,
@sort varchar(8)

as

begin

declare @cmd varchar(8000)
declare @uprecord int
declare @op varchar(2) -- 操作符
declare @max_min varchar(4) -- 最大/最小计算

set @op = ' set @max_min = 'min'
if @sort = 'asc'
begin
set @op = '>'
set @max_min = 'max'
end

set @uprecord=@curpage * @page_record

if @curpage = 0
set @cmd = 'select top '+cast(@page_record as nvarchar)+' '+@fieldlist+' from '+@tablename+' where '+@where+' '+@orderby
else
set @cmd = 'select top '+cast(@page_record as nvarchar)+' '+@fieldlist+' from '+@tablename+' where '+@where+' and '+@tablefield+'
'+@op+' (select '+@max_min+'('+@tablefield+') from (select top '+cast(@uprecord as nvarchar)+' '+@tablefield+' from '+@tablename+' where
'+@where+' '+@orderby+') as tmptbl ) and '+@where+' '+@orderby

set @cmd = @cmd + '; select count(*) from '+@tablename+' where '+@where

exec(@cmd)
print(@cmd)

end
go