Not too familiar with maps and aggregateResult in SF, so I'm not sure if this is a formatting issue or something else, but I keep getting that error in my trigger when this is called.

Map<Id,aggregateResult> maxDates = new Map<id,AggregateResult>([Select whoid id, Max(Sales_Activity_Date__c) myMax, Min(Sales_Activity_Date__c) myMin from Task 
         where whoid = :who and status = 'Completed' and whoid!=NULL GROUP BY whoid]);

Is it a formatting issue, or something else?

Thanks.

Hello Everybody,

 

   I am new in SalesForce. I don't understand what is the difference between the lookup and master-details relationships. Both are one to many relation ship.... and I can't imagine while developing when I should use each.. So, please advice

 

Thank you,

    Sally