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HNT_NeoHNT_Neo 

SOQL Query not rendering Column Headers

Hello, 

Working on creating an aggregated Apex Class with a SOQL query, but before I can build out the class, my soql query isn't producing the column headers, but show up as, Unknown_Field__1 , Unknown_Field__2, Unknown_Field__3. 

The values produced are correct though. 

When I query this in workbench, I got the results shown below. 
SELECT
SUM(Converted_Monthly_Sqft__c),
COUNT(Name),
CALENDAR_MONTH(CloseDate) Date_Converted_Month_Year__c
FROM 
Opportunity
WHERE stageName = 'Conversion' AND CALENDAR_YEAR(CloseDate) = 2018
GROUP BY CALENDAR_MONTH(CloseDate)
ORDER BY CALENDAR_MONTH(CloseDate)
WorkbenchImage
Converted_Monthly_Sqft__c is a number field

If someone can let me know what I'm doing wrong or point me in the right direction, it will be appreciated. 


Once this is correct, the SOQL Query will be placed inside my Apex Class: 
public class RealChartController {
    public List<AggregateResult> getData() {
        return
            [SUM(Total_Converted_Volume_Sqft__c) , 
            COUNT(Name) numOppsConversion,
            CALENDAR_MONTH(CloseDate) theMonth
            FROM 
            Opportunity
            WHERE stageName = 'Conversion' AND CALENDAR_YEAR(CloseDate) = 2018
            GROUP BY CALENDAR_MONTH(CloseDate)
           ORDER BY CALENDAR_MONTH(CloseDate)];
    }
}

 
Best Answer chosen by HNT_Neo
Raj VakatiRaj Vakati
Here is the sample code
Please make below change ... 

Change SOQL where conditions and other aggregate values .. 
Make Sure your aggregate value alias names are matched to the barseries and lineseries xAxis and yAsix fields .. 

 
public class RealChartController {
    public List<AggregateResult> getData() {
        return
            [SELECT SUM(Amount) amt, COUNT(Name) numOppsConversion,
             CALENDAR_MONTH(CloseDate) theMonth
             FROM Opportunity
             WHERE stageName != 'Closed Won' AND CALENDAR_YEAR(CloseDate) != 2011
             GROUP BY CALENDAR_MONTH(CloseDate)
             ORDER BY CALENDAR_MONTH(CloseDate)];
    }
    
    
    
}
 
<apex:page controller="RealChartController" showHeader="false" readOnly="true">
    <apex:chart width="100%" height="300" data="{!data}">
        <apex:axis type="Numeric" position="left" fields="amt"
                   title="Opportunities Sqft" grid="true"/>
        
        <apex:axis type="Numeric" position="right" fields="numOppsConversion"
                   title="Number of Opportunities"/>
        
        <apex:axis type="Category" position="bottom" fields="theMonth"
                   title="Month">
            
        </apex:axis>
        <apex:barSeries title="Monthly Sales" orientation="vertical"
                        axis="right" xField="theMonth" yField="amt"/>
        <apex:lineSeries title="Closed-Won"
                         axis="left" xField="theMonth" yField="numOppsConversion"
                         markerType="circle" markerSize="4" markerFill="#00FF00"/>
    </apex:chart>
</apex:page>

 

All Answers

Raj VakatiRaj Vakati
Try something like below ..sample code is here
 
public class RealChartController {
    public List<ChartWrapper> getData() {
        List<AggregateResult> ggs = 
            [Select SUM(Amount) amt, 
             COUNT(Name) numOppsConversion,
             CALENDAR_MONTH(CloseDate) theMonth
             FROM 
             Opportunity
             WHERE stageName != 'Conversion' AND CALENDAR_YEAR(CloseDate) != 2018
             GROUP BY CALENDAR_MONTH(CloseDate)
             ORDER BY CALENDAR_MONTH(CloseDate)];
        List<ChartWrapper> wrapper = new List<ChartWrapper>() ;
        wrapper.add(new ChartWrapper('Header' ,'Header','Header' ));
        for(AggregateResult r :ggs){
            wrapper.add(new ChartWrapper((String)r.get('expr0') ,(String)r.get('expr1'), (String)r.get('expr2')));
        }
        
        
        return wrapper ; 
        
    }
    
    
    public class ChartWrapper {
        
        public String amt {get;set;}
        public String numOppsConversion {get;set;}
        public String theMonth {get;set;}
        
        public ChartWrapper(String amt, String numOppsConversion , String theMonth){
            this.amt = amt ; 
            this.numOppsConversion = numOppsConversion ; 
            this.theMonth = theMonth ;
        }
    }
}

 
HNT_NeoHNT_Neo
Hi Raj, 

Are there values I need to input for 'expr0',  'expr1', 'expr2'? 

Also, trying to get the values for conversions in 2018 and noticed that != is in the syntax. 

Please let me know. 

Thank you!

 
HNT_NeoHNT_Neo
Hi Raj, 

Disregard 'expr0' comment in previous post. 

Here is my VF page: 
 
<apex:page controller="RealChartController" showHeader="true" readOnly="true">
    <apex:chart width="100%" height="300" data="{!data}">
        <apex:axis type="Numeric" position="left" fields="amt"
            title="Opportunities Sqft" grid="true"/>
            
        <apex:axis type="Numeric" position="right" fields="numOppsConversion"
            title="Number of Opportunities"/>
            
        <apex:axis type="Category" position="bottom" fields="theMonth"
            title="Month">
            
        </apex:axis>
        <apex:barSeries title="Monthly Sales" orientation="vertical"
            axis="right" xField="theMonth" yField="amt"/>
        <apex:lineSeries title="Closed-Won"
            axis="left" xField="theMonth" yField="numOppsConversion"
            markerType="circle" markerSize="4" markerFill="#00FF00"/>
    </apex:chart>
</apex:page>

I got it to render, but my mapping may not be correct in VF, can you take a look? 
User-added image
 
Raj VakatiRaj Vakati
Its a sample code i wrote .. you chane the value to 2017 in where condition ... 
Coming into the exp0  that how aggregate function result will be 
Raj VakatiRaj Vakati
Here is the sample code
Please make below change ... 

Change SOQL where conditions and other aggregate values .. 
Make Sure your aggregate value alias names are matched to the barseries and lineseries xAxis and yAsix fields .. 

 
public class RealChartController {
    public List<AggregateResult> getData() {
        return
            [SELECT SUM(Amount) amt, COUNT(Name) numOppsConversion,
             CALENDAR_MONTH(CloseDate) theMonth
             FROM Opportunity
             WHERE stageName != 'Closed Won' AND CALENDAR_YEAR(CloseDate) != 2011
             GROUP BY CALENDAR_MONTH(CloseDate)
             ORDER BY CALENDAR_MONTH(CloseDate)];
    }
    
    
    
}
 
<apex:page controller="RealChartController" showHeader="false" readOnly="true">
    <apex:chart width="100%" height="300" data="{!data}">
        <apex:axis type="Numeric" position="left" fields="amt"
                   title="Opportunities Sqft" grid="true"/>
        
        <apex:axis type="Numeric" position="right" fields="numOppsConversion"
                   title="Number of Opportunities"/>
        
        <apex:axis type="Category" position="bottom" fields="theMonth"
                   title="Month">
            
        </apex:axis>
        <apex:barSeries title="Monthly Sales" orientation="vertical"
                        axis="right" xField="theMonth" yField="amt"/>
        <apex:lineSeries title="Closed-Won"
                         axis="left" xField="theMonth" yField="numOppsConversion"
                         markerType="circle" markerSize="4" markerFill="#00FF00"/>
    </apex:chart>
</apex:page>

 
This was selected as the best answer