Question

这是我更新的代码。

<cfquery datasource="#dsn#" name="list">
    SELECT film_Director
    FROM main_Films
    WHERE film_Active = '1'
    GROUP BY film_Director
</cfquery>

<cfset OnEachPage=15>

<cfparam name="StartRow" default="1">
<cfset EndRow=StartRow + OnEachPage - 1>
<cfif EndRow GTE list.RecordCount>
    <cfset EndRow=list.RecordCount>
    <cfset Next=false>
<cfelse>
    <cfset Next=true>
    <cfif EndRow + OnEachPage GT list.RecordCount>
        <cfset NextNum=list.RecordCount - EndRow>
    <cfelse>
        <cfset NextNum= OnEachPage>
    </cfif>
    <cfset NextStart=EndRow + 1>
</cfif>
<cfif StartRow IS 1>
    <cfset Previous=false>
<cfelse>
    <cfset Previous=true>
    <cfset PreviousStart=StartRow - OnEachPage>
</cfif>

<cfset NumPages=Ceiling(list.RecordCount / OnEachPage)>
<cfparam name="PageNum" default="1">

<cfoutput><br>
    <center>Display Page #StartRow# to #EndRow# dari #list.RecordCount# Search.</center><p>
</cfoutput>
<table border="0">
    <tr align="center">
        <td valign="top">
            <cfif Previous>
                <cfoutput>
                <a href="filmby_Director.cfm?StartRow=#PreviousStart#& PageNum=#DecrementValue(PageNum)#<cfif IsDefined("Keyword")>&Keyword=#URLEncodedFormat(Keyword)#</cfif>">&lt;&lt;&nbsp;Page Before</a>
                </cfoutput>
            <cfelse>&nbsp;
            </cfif>
        </td>
        <cfloop from="1" to="#NumPages#" index="ThisPage">
            <cfoutput>
            <cfif ThisPage IS PageNum>
                <td>#ThisPage#</td>
            <cfelse>
                <cfset PageNumStart=(((ThisPage - 1) * OnEachPage) + 1)>
                <td><a href="filmby_Director.cfm?StartRow=#PageNumStart#&PageNum=#ThisPage#<cfif IsDefined("Keyword")>&Keyword=#URLEncodedFormat(Keyword)#</cfif>">#ThisPage#</a></td>
            </cfif>
            </cfoutput>
        </cfloop>
        <td valign="top">
            <cfif Next>
                <cfoutput>
                <i><a href="filmby_Director.cfm?StartRow=#NextStart#&   PageNum=#IncrementValue(PageNum)#<cfif IsDefined("Keyword")>&Keyword=#URLEncodedFormat(Keyword)#</cfif>">Next Page&nbsp;&gt;&gt;</a></i>
                  </cfoutput>
            <cfelse>
            </cfif>
            </td>
    </tr>
    <tr>
        <td valign="top" colspan="<cfoutput>#Evaluate(NumPages + 2)#</cfoutput>">
    <tr><tr>
    <table border="1" >
        <thead>
        <cfoutput>
            <tr><th colspan="4">#list.film_Director#</th></th></tr>
        </cfoutput>
        <tr>
            <th>ID</th><th>Film Name</th><th>Description</th><th>Edit Description</th>
        </thead>
        <cfoutput query="list" startrow="#startrow#" maxrows="#OnEachPage#">
            <tbody>
                <tr align="left">
                    <td>#director_ID#</td>
                    <td>#film_Name#</td>
                    <td>#film_Desc#</td>
                    <td><input type="text" name="editDesc" onBlur="this.value=this.value.toUpperCase();"></td>
                </tr>
            </tbody>
            </tbody>
        </cfoutput>
    </table>

我想用电影导演分组的分页（下一页/前一页）进行查询。

数据示例：导演A / ABC电影，导演B / ASD电影，导演A / FDE电影，导演A / 123电影。

然后，我有分页页面的问题。有人能帮我吗？如何对数据进行分组，并制作下一页。

Answer 1

您使用的是哪个版本的Oracle？如果是12c，那么您可以使用新的分页功能：

select owner, object_name, object_id
from all_objects
order by owner, object_name
OFFSET 5 ROWS FETCH NEXT 5 ROWS ONLY;

Answer 2

此链接可帮助您理解

http://www.oracle.com/technetwork/issue-archive/2007/07-jan/o17asktom-093877.html

SELECT * FROM (
    SELECT row_number() over (ORDER BY film_Director ASC) rownumber,
    film_Director
    FROM main_Films
    WHERE film_Active = '1'
    GROUP BY film_Director    
) as q1
WHERE q1.rownumber 
BETWEEN 10 AND 20

尚未经过测试，可能需要进行一些调整。

分页与分页

2 个答案: