Question

我正在运行以下查询和QoQ。你能告诉我如何进行“下载CSV”文件选项吗？

<!--- QoQ for FIRSTCONN --->

<cfquery datasource = "XX.XX.X.XX" name="master1">
     SELECT STR_TO_DATE(date_format(Timedetail,'%m-%d-%Y'),'%m-%d-%Y') as FIRSTCONN
            , COUNT(Timedetail) as FIRSTOccurances
            , EVENTS 
     FROM  MyDatabase
     WHERE EVENTS = "FIRST" 
     GROUP BY FIRSTCONN ;
</cfquery> 

<!--- Detail Query --->

<cfquery dbtype="query" name="detail1">
    SELECT  *
    FROM master1 
    WHERE FIRSTCONN  >= <cfqueryparam value="#form.startdate#" cfsqltype="cf_sql_varchar"> 
    AND   FIRSTCONN  <  <cfqueryparam value="#dateAdd('d', 1,form.enddate)#" cfsqltype="cf_sql_varchar">;
</cfquery>  


<!--- QoQ for SECONDCONN --->

<cfquery datasource = "XX.XX.X.XX" name="master2">
    SELECT STR_TO_DATE(date_format(Timedetail,'%m-%d-%Y'),'%m-%d-%Y') as SECONDCONN
           , COUNT(Timedetail) as SECONDOccurances
           , EVENTS 
    FROM  MyDatabase
    WHERE EVENTS = "SECOND" 
    GROUP BY SECONDCONN ;
</cfquery> 


<cfquery dbtype="query" name="detail2">
    SELECT  *
    FROM   master2 
    WHERE  SECONDCONN  >= <cfqueryparam value="#form.startdate#" cfsqltype="cf_sql_varchar"> 
    AND    SECONDCONN  <  <cfqueryparam value="#dateAdd('d', 1,form.enddate)#" cfsqltype="cf_sql_varchar">;
</cfquery>  


<cfchart format="flash"  chartwidth="1000" chartheight="500" scalefrom="0" scaleto="50000" xAxisTitle="Dates" yaxistitle="Number of Connections">
     <cfchartseries  query="detail1" type="line" itemColumn="FIRSTCONN" valueColumn="FIRSTOccurances" > 
     <cfchartseries  query="detail2" type="line" itemColumn="SECONDCONN" valueColumn="SECONDOccurances" > 
     </cfchartseries>
</cfchart>[/CODE]

The cfform code and cfscript code I'm using is as follows:

[CODE]<cfform format="flash" preloader ="false">


<cfformgroup type="horizontal">

  <cfinput type="dateField" name="startdate" label="Start Date" width="100" value="#form.startdate#">
  <cfinput type="dateField" name="enddate" label="End Date" width="100" value="#form.enddate#">
  <cfinput name="submitApply" type="submit" value = "Apply">
  <cfinput name="cancel" type="submit" value="Download CSV">

</cfformgroup>


<cfscript>
    var tl ='';
    var nl = (Chr( 13 ) & Chr( 10 ));
    var fileContent = createObject("java","java.lang.StringBuffer").init();
    var counter =1;
    fileContent.append( 'FIRST');
     fileContent.append(nl);
            for(i=1;i<=detail1.recordCount;i=i+1){
                tl = detail1.FIRST;
                fileContent.append(tl);
                fileContent.append(nl);
            }




  fileContent.append( 'SECOND');
     fileContent.append(nl);
            for(i=1;i<=detail2.recordCount;i=i+1){
                tl = detail2.SECOND;
                fileContent.append(tl);
                fileContent.append(nl);
            }           

</cfscript>

<cfset absoluteFilePathAndName = " C:\ColdFusion8\runtime\servers\coldfusion\SERVER-INF\temp\wwwroot-tmp\">

<cfset realtiveFilePathAndName = " C:\ColdFusion8\runtime\servers\coldfusion\SERVER-INF\temp\wwwroot-tmp\">

<cffile action="write" file="#absoluteFilePathAndName#" output="#fileContent.toString()#"/>
<a href="#realtiveFilePathAndName#>Download</a>

期望的输出：

我已为下面的输出附加了。请附上。

基本上，如果日期范围是6月21日至7月21日。输出必须如图所示。（为了简化我的代码，我省略了THIRDCONN等。）

我试图尝试上述问题，我是否需要为每一列编写fileContent.append（）？如果我错了，请告诉我。

P.S。我是CF的新手，之前没有这样做过。

由于

Answer 1

使用单独的查询会使这个问题变得非常困难。要使其正常工作，您基本上需要pivot或将每个查询的行转置到单独的列中。这不是一件容易的事，除非所有的查询都保证以相同的顺序包含完全相同的日期（不太可能）。

如果您有一定数量的事件，那么使用单个数据库查询生成所有计数就更容易。使用CASE语句根据“事件”值构建计数：

（注意：不能在QoQ内完成。他们不支持CASE）。

 SELECT STR_TO_DATE(date_format(Timedetail,'%m-%d-%Y'),'%m-%d-%Y') as TheDate
        , SUM( CASE WHEN EVENTS = 'First' THEN 1 ELSE 0 END ) AS FirstConn
        , SUM( CASE WHEN EVENTS = 'Second' THEN 1 ELSE 0 END ) AS SecondConn
        , SUM( CASE WHEN EVENTS = 'Third' THEN 1 ELSE 0 END ) AS ThirdConn
 FROM  YourTableName
 WHERE Timedetail  >= <cfqueryparam value="#form.startdate#" cfsqltype="cf_sql_date"> 
 AND   Timedetail  <  <cfqueryparam value="#dateAdd('d', 1,form.enddate)#" cfsqltype="cf_sql_date">
 GROUP BY STR_TO_DATE(date_format(Timedetail,'%m-%d-%Y'),'%m-%d-%Y')

在单个查询中获得所有结果后，您可以自行完成其余的工作。正如亚当提到的，只需搜索对csv的ColdFusion查询。您可以遵循吨示例，以及一些用于将查询转换为CSV的预构建函数：

使用CSV

1 个答案: