Week 6 Homework

gistfile1.txt

public with sharing class WeekSixHomework {
    
    public static void soqlPractice() {
        
        //1. Below is a SOQL query that should be returning the top 5 Accounts in our org based on Annual Revenue.
        //Something's not quite right, can you fix the query?
        List<Account> topFiveAccounts = [SELECT Id, Name, AnnualRevenue FROM Account WHERE AnnualRevenue != 0 LIMIT 5];
        
        System.debug('This should be 5: ' + topFiveAccounts.size());
        
        
        //2. Here is a query that is missing something.  It compiles, but if you try and run this method in Anonymous
        //you'll get an error when the method tries to use the query results.  Fix it! :)
        
        List<Contact> contacts = [SELECT FirstName, LastName, MailingState FROM Contact LIMIT 10];
        
        for (Contact c : contacts) {
            String name = c.FirstName + ' ' + c.LastName;
        }
        
        
        //3.  Can you write a SOQL query from scratch that will return the top 10 Accounts in the org, ordered by annual
        //revenue in decending order?  Print your results in the debug log.
        List<Account> tenTopAccts = [SELECT Id, Name, AnnualRevenue FROM Account WHERE (AnnualRevenue != 0 AND AnnualRevenue != Null) ORDER BY AnnualRevenue DESC LIMIT 10];
        for (Account Acct : tenTopAccts){
            String results = acct.Name + ' ' + acct.AnnualRevenue;
            system.debug('These are the top 10 Accounts: '+results);
        }
        
        //4.  Can you write a SOQL query that will return all opportunities for all accounts in the topFiveAccounts list that we used
        //in Number 1?  (topFiveAccounts) Hint:  If you're stuck, look back a the code in WeekSixClassExercises, getOpenOppsForHotAccounts method
        //  Print your results in the debug log.
        
        List<Opportunity> topFiveOpptys = [SELECT Id, Amount, StageName FROM Opportunity WHERE (IsClosed = False AND AccountID in:topFiveAccounts)LIMIT 5];
        system.debug('These are the opportunities for the top 5 accounts: '+ topFiveOpptys);
        
    }
    
    public static void forTheLoveOfForLoops() {
        
        //1. Take a look at the list and loop below.  It's commented out since it can't run as is.
        // Can you replace the ?? with the number that makes sense based on the comments?
        // Remove the slashes and compile.
        // Can you add an extra counter variable so that you can print out how many times the loop ran in total?
        
        
        //This loop should run 5 times
        Integer counter = 0;
        for (Integer i=0; i<5; i++) {
            System.debug('i is now: '+i);
            counter++;
        }
        system.debug('How many times the loop ran: ' + counter);
        
        
        //2.  Below is a loop that iterates through a list.  Can you change it to use the new For Loop syntax?  It should print out
        //each account name in the debug log when you're done.
        //Use the list size to tell you how many loops, and use indexing to fetch values.  If you need help, check the
        //loopingThroughLists method in WeekSixClassExercises for hints
        
        List<Account> accountList = [SELECT Id, Name FROM Account LIMIT 5];
        
        for (Integer listCount=0; listCount<accountList.size(); listCount++) {
            System.debug('Account Name: ' + accountList[listCount].name);
        }
        
        
    }
    
    
}

@kate This looks good! Couple of observations :

Line 7 : The query looks good but the task is also looking for Top 5 Accounts ;) You might have missed it.

Line 24 : Its technically correct and always good to add a null check but the comments don't ask you to add the filter AnnualRevenue != 0

Similarly on Line 32, the query doesn't need to filter on IsCLosed = false as they are asking for all opportunities. But I can see that the hint might have confused you.

Ahhhhh makes total sense! I did miss that (line 7)! Thanks for pointing it out- I'll take a look again :)
And you're exactly right on Line 32... I think the hint did confuse me a bit but that also makes sense.
Thanks so much for your notes!