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悬赏园豆:20 [已解决问题] 解决于 2012-07-25 10:23

asp网页,管理产品的后台页,只显示到ID是54的,然后就显示ID是146的商品的,中间的没显示,分页也分了7页,一页20条记录,数据库里也有数据,而且完整,下边是具体代码:

 <%
sql = "from products where 1=1"
page_size = 20
total = conn.Execute("select Count(*) "&sql)(0)
If total = 0 Then
    Response.Write("暂无产品!!")
Else
    page = request.QueryString("page")
    If page<>"" And IsNumeric(page) Then page = CInt(page) Else page = 1
    If total Mod page_size = 0 Then pages = total / page_size Else pages = total \ page_size + 1
    If page>pages Then page = pages
    If page>1 Then Set rs = conn.Execute("select Top "&page_size&" * "&sql&" and id>(select max(id) from (select top "&page_size * (page -1)&" id "&sql&") as maxId)") Else Set rs = conn.Execute("select Top "&page_size&" * "&sql&"")
    Do While Not rs.EOF
%>

          <tr>
            <td align="center"><%=rs("id")%></td>
            <td width="13%" align="center"><img src="../<%=rs("uploadfile")%>" width="50" height="20" title="<%=rs("title")%>" alt="<%=rs("title")%>" /></td>
            <td width="48%" align="center" style="color:#00F;"><%=rs("title")%></td>
            <td width="25%" align="center"><input type="button" name="update" value="修改内容" onclick="window.location.href='products_update.asp?id=<%=rs("id")%>' " />
            <input type="button" name="delete" value="删除产品" onclick="javascript:if(confirm('确定要删除此类产品吗?删除后不可恢复!')){window.location.href='ManagementProducts.asp?act=del&amp;id=<%=rs("id")%>';}else{history.go(0);}" /></td>
          </tr>
        </form>
        <%
rs.movenext
Loop
rs.Close
Set rs = Nothing
End If
%>
      </table>
          <p>&nbsp; </p>
<%'以下显示分页
Call PageControl(total, pages, page, "border=0 align=center", "<p align=center>")
%>

帮忙看下感激

觉信的主页 觉信 | 初学一级 | 园豆:66
提问于:2012-07-23 12:07
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最佳答案
0

给楼主一个SQL分页代码吧,我之前在网上找的,感觉很好用。

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
Create Procedure [dbo].[PageCut] 
 @TableName varchar(50),        --表名
 @Fields varchar(4000) = '*',    --字段名(全部字段为*)
 @OrderField varchar(4000),        --排序字段(必须!支持多字段)
 @sqlWhere varchar(4000) = Null,--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
 @TotalPage int output            --返回总页数 
AS
Begin

    Begin Tran --开始事务
    Declare @sql nvarchar(4000);
    Declare @totalRecord int;    
    --计算总记录数
    If (isnull(@SqlWhere,'')='')
        set @sql = 'select @totalRecord = count(*) from ' + @TableName
    Else
        set @sql = 'select @totalRecord = count(*) from ' + @TableName + ' where ' + @sqlWhere
        
    EXEC sp_executesql @sql,N'@totalRecord int OUTPUT',@totalRecord OUTPUT--计算总记录数        
    --计算总页数
    Select @TotalPage=CEILING((@totalRecord+0.0)/@PageSize)
    If (isnull(@SqlWhere,'')='')
        set @sql = 'Select * FROM (select ROW_NUMBER() Over(order by ' + @OrderField + ') as rowId,' + @Fields + ' from ' + @TableName 
    Else
        set @sql = 'Select * FROM (select ROW_NUMBER() Over(order by ' + @OrderField + ') as rowId,' + @Fields + ' from ' + @TableName + ' where ' + @SqlWhere    
        
    --处理页数超出范围情况
    If @PageIndex<=0 
        Set @pageIndex = 1
    If @pageIndex>@TotalPage
        Set @pageIndex = @TotalPage
     --处理开始点和结束点
    Declare @StartRecord int
    Declare @EndRecord int
    Set @StartRecord = (@pageIndex-1)*@PageSize + 1
    Set @EndRecord = @StartRecord + @pageSize - 1
    
    --select CHARINDEX ('(','123456768')
    --SELECT SUBSTRING('1234567((68)',0,CHARINDEX ('(','123456768'))
    IF CHARINDEX('(',@TableName) <>0 SET @TableName=SUBSTRING(@TableName,0,CHARINDEX('(',@TableName))
    --继续合成sql语句
    Set @Sql = @Sql + ') as ' + @TableName + ' where rowId between ' + Convert(varchar(50),@StartRecord) + ' and ' +  Convert(varchar(50),@EndRecord)
    
    Exec(@Sql)
    ---------------------------------------------------
    If @@Error <> 0
      Begin
        RollBack Tran
        Return -1
      End
     Else
      Begin
        Commit Tran
        Return @totalRecord ---返回记录总数
      End    
end
收获园豆:10
Shannon | 小虾三级 |园豆:609 | 2012-07-25 10:15
其他回答(3)
0

SQL加一个排序看下,如果没有排序,数据更新过的吧,会出现问题。

收获园豆:5
Tom.汤 | 园豆:2256 (老鸟四级) | 2012-07-23 12:18

具体在哪加排序呢,刚学不太懂求指导,谢谢了

支持(0) 反对(0) 觉信 | 园豆:66 (初学一级) | 2012-07-23 12:20

@觉信: 

 

If page>1 Then Set rs = conn.Execute("select Top "&page_size&" * "&sql&" and id>(select max(id) from (select top "&page_size * (page -1)&" id "&sql &排序 &") as maxId)" &排序) Else Set rs = conn.Execute("select Top "&page_size&" * "&sql&"" &排序)

支持(0) 反对(0) Tom.汤 | 园豆:2256 (老鸟四级) | 2012-07-23 12:27

@Tom.汤: If page>1 Then Set rs = conn.Execute("select Top "&page_size&" * "&sql&" and id>(select max(id) from (select top "&page_size * (page -1)&" id "&sql& order by id&") as maxId)" &order by id) Else Set rs = conn.Execute("select Top "&page_size&" * "&sql&"" &order by id)  这样可以吗,弄好了我再追加分数谢谢了

支持(0) 反对(0) 觉信 | 园豆:66 (初学一级) | 2012-07-23 13:18
0

分页有问题,重新找了个分页的代码,可以了

觉信 | 园豆:66 (初学一级) | 2012-07-23 21:13
0

可以去网上找个分页的存储过程,然后后台代码直接调用就不会有问题

收获园豆:5
Learning hard | 园豆:362 (菜鸟二级) | 2012-07-24 20:30
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