page=cint(request("page"))
QueryStr="select l_id,l_name,l_addtime,b_company from cp_book,province,city,cp_lxr where province.id=city.shengid and cp_book.b_hy1=province.id and city.id=b_hy2 and cp_book.b_id=cp_lxr.l_cpid and b_my_custom=0 and b_del=0 and b_heimingdan=0 and b_protect=0 and b_ok=0"
'返回总记录数
Set MyComm=Server.CreateObject("ADODB.Command")
MyComm.ActiveConnection=conn
'MyConStr是数据库连接字串
MyComm.CommandText="p_show"
'指定存储过程名
MyComm.CommandType=4
'表明这是一个存储过程
MyComm.Prepared=true
'要求将SQL命令先行编译
'声明参数
MyComm.Parameters.append MyComm.CreateParameter( "@sql",200,1,500,QueryStr)'sql语句
MyComm.Parameters.append MyComm.CreateParameter( "@PageSize",200,1,500,10)'分页大小
MyComm.Parameters.append MyComm.CreateParameter( "@PageCount",200,1,500,1)'共多少页
MyComm.Parameters.append MyComm.CreateParameter( "@PageCurrent",200,1,500,1)'当前页
MyComm.Execute
'取得出参
TotalRs=MyComm.Parameters( "@PageCount").value
Set MyComm=Nothing
'计算总页数
if TotalRs mod 30 =0 then
TotalPage=int(TotalRs /30)
else
TotalPage=int(TotalRs /30) + 1
end if
'页码合法判断
if page="" or page<=0 then
page=1
end if
'调用存储过程
sql="exec p_show '"&QueryStr&"',10,1,1,'l_id,l_name,b_company,l_addtime'"
set rs=server.CreateObject("adodb.recordset")
rs.open sql,conn,1,1
当page>1,即将参数PageCurrent 1改为2的时候出错
ADODB.Recordset 错误 '800a0e78'
对象关闭时,不允许操作。
是怎么回事呀
我找到个分页的存储过程,分析器里查询已经成功,但是ASP代码里调用不会。求教
--(原代码作者:邹建,改编加入显示总页数:Tony)
create Proc p_show
@QueryStr nvarchar(4000), --表名、视图名、查询语句,如要加条件,直接在此加入(如:select * from tb where ....)
@PageSize int=10, --每页的大小(行数)
@pagecount int out, --显示总页数
@PageCurrent int=1, --要显示的页
@FdShow nvarchar (4000)='',--要显示的字段列表,如果查询结果有标识字段,需要指定此值,且不包含标识字段
@FdOrder nvarchar (1000)='' --排序字段列表
as
declare @FdName nvarchar(250) --表中的主键或表、临时表中的标识列名
,@Id1 varchar(20),@Id2 varchar(20) --开始和结束的记录号
,@Obj_ID int --对象ID
,@sql nvarchar(4000)
--表中有复合主键的处理
declare @strfd nvarchar(2000) --复合主键列表
,@strjoin nvarchar(4000) --连接字段
,@strwhere nvarchar(2000) --查询条件
select @Obj_ID=object_id(@QueryStr)
,@FdShow=case isnull(@FdShow,'') when '' then ' *' else ' '+@FdShow end
,@FdOrder=case isnull(@FdOrder,'') when '' then '' else ' order by '+@FdOrder end
,@QueryStr=case when @Obj_ID is not null then ' '+@QueryStr else ' ('+@QueryStr+') a' end
--显示总页数
set @sql='select @pagecount=ceiling(count(*)*1./@PageSize) from '+@QueryStr
exec sp_executesql @sql,N'@pagecount int out,@PageSize int',@pagecount out,@PageSize
--如果显示第一页,可以直接用top来完成
if @PageCurrent=1
begin
select @Id1=cast(@PageSize as varchar(20))
exec('select top '+@Id1+@FdShow+' from '+@QueryStr+@FdOrder)
return
end
--如果是表,则检查表中是否有标识更或主键
if @Obj_ID is not null and objectproperty(@Obj_ID,'IsTable')=1
begin
select @Id1=cast(@PageSize as varchar(20))
,@Id2=cast((@PageCurrent-1)*@PageSize as varchar(20))
select @FdName=name from syscolumns where id=@Obj_ID and status=0x80
if @@rowcount=0 --如果表中无标识列,则检查表中是否有主键
begin
if not exists(select 1 from sysobjects where parent_obj=@Obj_ID and xtype='PK')
goto lbusetemp --如果表中无主键,则用临时表处理
select @FdName=name from syscolumns where id=@Obj_ID and colid in(
select colid from sysindexkeys where @Obj_ID=id and indid in(
select indid from sysindexes where @Obj_ID=id and name in(
select name from sysobjects where xtype='PK' and parent_obj=@Obj_ID
)))
if @@rowcount>1 --检查表中的主键是否为复合主键
begin
select @strfd='',@strjoin='',@strwhere=''
select @strfd=@strfd+',['+name+']'
,@strjoin=@strjoin+' and a.['+name+']=b.['+name+']'
,@strwhere=@strwhere+' and b.['+name+'] is null'
from syscolumns where id=@Obj_ID and colid in(
select colid from sysindexkeys where @Obj_ID=id and indid in(
select indid from sysindexes where @Obj_ID=id and name in(
select name from sysobjects where xtype='PK' and parent_obj=@Obj_ID
)))
select @strfd=substring(@strfd,2,2000)
,@strjoin=substring(@strjoin,5,4000)
,@strwhere=substring(@strwhere,5,4000)
goto lbusepk
end
end
end
else
goto lbusetemp
/*--使用标识列或主键为单一字段的处理方法--*/
lbuseidentity:
exec('select top '+@Id1+@FdShow+' from '+@QueryStr
+' where '+@FdName+' not in(select top '
+@Id2+' '+@FdName+' from '+@QueryStr+@FdOrder
+')'+@FdOrder
)
return
/*--表中有复合主键的处理方法--*/
lbusepk:
exec('select '+@FdShow+' from(select top '+@Id1+' a.* from
(select top 100 percent * from '+@QueryStr+@FdOrder+') a
left join (select top '+@Id2+' '+@strfd+'
from '+@QueryStr+@FdOrder+') b on '+@strjoin+'
where '+@strwhere+') a'
)
return
/*--用临时表处理的方法--*/
lbusetemp:
select @FdName='[ID_'+cast(newid() as varchar(40))+']'
,@Id1=cast(@PageSize*(@PageCurrent-1) as varchar(20))
,@Id2=cast(@PageSize*@PageCurrent-1 as varchar(20))
exec('select '+@FdName+'=identity(int,0,1),'+@FdShow+'
into #tb from'+@QueryStr+@FdOrder+'
select '+@FdShow+' from #tb where '+@FdName+' between '
+@Id1+' and '+@Id2
)
GO
--调用示例:
declare @pagecount int
exec p_show
@QueryStr='select l_id from cp_book,province,city,cp_lxr where province.id=city.shengid and cp_book.b_hy1=province.id and city.id=b_hy2 and cp_book.b_id=cp_lxr.l_cpid and b_my_custom=0 and b_del=0 and b_heimingdan=0 and b_protect=0 and b_ok=0',
@PageSize=10,
@pagecount=@pagecount out,
@PageCurrent=2
select @pagecount AS xx
ASP页面如下:
<!--#include file="../inc/conn.asp"-->
<%
call open_misdb()
QueryStr="select l_id,l_name,b_company from cp_book,province,city,cp_lxr where province.id=city.shengid and cp_book.b_hy1=province.id and city.id=b_hy2 and cp_book.b_id=cp_lxr.l_cpid and b_my_custom=0 and b_del=0 and b_heimingdan=0 and b_protect=0 and b_ok=0"
set Rs=conn.execute("exec p_show "&QueryStr&"",10,5,1)
response.Write rs("xx")
do while not rs.eof
response.Write rs("l_id")
rs.movenext
loop
%>
执行不了超时,
不用存储过程的话看你用的什么数据库了,mysql 可以用limit直接限定,Oracle里面有rownum,ms sql server和Access的话估计只能用top加多次排序处理了,例如:取11-20条记录可以通过类似下面的语句实现
select * from (select top 10 * from (select top 20 * from 表 order by id asc) as a order by id desc) as b order by id asc
不知道最新的SQL Server 2008/2012啥的有没有新的方法