Given a list of Opportunity records named opportunityList, which code snippet is best for querying all Contacts of the Opportunity's Account?
An Apex Trigger creates a Contract record every time an Opportunity record is marked as Closed and Won. This trigger is working great, except (due to a recent acquisition) historical Opportunity records need to be loaded into the Salesforce instance.When a test batch of records is loaded, the Apex Trigger creates Contract records. A developer is tasked with preventing Contract records from being created when mass loading the Opportunities, but the daily users still need to have the Contract records created.What is the most extendable way to update the Apex Trigger to accomplish this?
Business rules require a Contact to always be created when a new Account is created.What can be used when developing a custom screen to ensure an Account is not created if the creation of the Contact fails?
trigger AssignOwnerByRegion on Account ( before insert, before update ){List<Account> accountList = new List<Account>();for( Account anAccount : trigger.new ){Region__c theRegion = [SELECT Id, Name, Region_Manager__cFROM Region__c -WHERE Name = :anAccount.Region_Name__c];anAccount.OwnerId = theRegion.Region_Manager__c;accountList.add( anAccount );}update accountList;}Consider the above trigger intended to assign the Account to the manager of the Account's region.Which two changes should a developer make in this trigger to adhere to best practices? (Choose two.)
Example 1:AggregateResult[] groupedResults = [SELECT CampaignId, AVG(Amount) FROM Opportunity GROUP BY CampaignId]; for (AggregateResult ar : groupedResults){System.debug('Campaign ID' + ar.get('CampaignId'));System.debug('Average amount' + ar.get('expr0'));}Example 2:AggregateResult[] groupedResults = [SELECT CampaignId, AVG(Amount) theAverage FROM Opportunity GROUP BY CampaignId]; for (AggregateResult ar : groupedResults){System.debug('Campaign ID' + ar.get('CampaignId'));System.debug('Average amount' + ar.get('theAverage'));}Example 3:AggregateResult[] groupedResults = [SELECT CampaignId, AVG(Amount) FROM Opportunity GROUP BY CampaignId]; for (AggregateResult ar : groupedResults){System.debug('Campaign ID' + ar.get('CampaignId'));System.debug('Average amount' + ar.get.AVG());}Example 4:AggregateResult[] groupedResults = [SELECT CampaignId, AVG(Amount) theAverage FROM Opportunity GROUP BY CampaignId]; for (AggregateResult ar : groupedResults){System.debug('Campaign ID' + ar.get('CampaignId'));System.debug ('Average amount' + ar.theAverage);}Which two of the examples above have correct System.debug statements? (Choose two.)
A Visualforce page loads slowly due to the large amount of data it displays.Which strategy can a developer use to improve the performance?
